rodger rainier wants to share "Shared" with you

[Dropbox]

	Rodger wants to share some files with you using Dropbox. Message from Rodger: "Did this invite get thru? " View "Shared" Enjoy! - The Dropbox Team
	© 2012 Dropbox

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[Tom Maynard]

On 1/10/2012 6:30 PM, Dropbox wrote:
> /"Did this invite get thru?"/
>
>
>
>

It did, but access to the file(s) did not.  Instead of "Sharing" a file,
you need to right-click it in your Dropbox folder, select "Dropbox" from
the menu, and then "Copy public link".  That will put the URL of the
file in your clipboard.

Then just paste it into a note to the list.

When you "Share" only the first person who accepts your invitation gains
access to the file(s).

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[ThSITC]

Hello Kenneth,
    my DROPBOX ID is [hidden email] (as usual)

Tom Maynard, thanks for the clarification.
Thomas.
===========================================================
Am 11.01.2012 04:25, schrieb Tom Maynard:

> On 1/10/2012 6:30 PM, Dropbox wrote:
>> /"Did this invite get thru?"/
>>
>>
>>
>>
>
> It did, but access to the file(s) did not.  Instead of "Sharing" a
> file, you need to right-click it in your Dropbox folder, select
> "Dropbox" from the menu, and then "Copy public link".  That will put
> the URL of the file in your clipboard.
>
> Then just paste it into a note to the list.
>
> When you "Share" only the first person who accepts your invitation
> gains access to the file(s).
>
> _______________________________________________
> Ibm-netrexx mailing list
> [hidden email]
> Online Archive : http://ibm-netrexx.215625.n3.nabble.com/
>
>

--
Thomas Schneider (Founder of www.thsitc.com) Member of the Rexx Languge
Asscociation (www.rexxla.org) Member of the NetRexx Developer's Team
(www.netrexx.org)

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[kenner]

That is a great tool that should help me out a lot, thanks.




Has anyone figured out where the "package component" is? In converting the ButtonDemo.java example from the java tutorial pages to netrexx a few problems arise. First a few syntax problems arose with the (, ) and {  and }. Also "true" and "false" are reserved words so I manually converted those to isTrue and isFalse methods. Finally "Runnable" seems to be part of a package that I can not find in the tutorials anywhere.

Kenneth Klein
Systems Specialist
[hidden email]
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[George Hovey-2]

Runnable is a Java "interface".  It is described here (find it in the left hand bottom list)

http://docs.oracle.com/javase/6/docs/api/

Interfaces don't have constructors.  That is the short answer, but probably not what you're hoping for :) .  Tell us more and the Java experts will jump in.

On Thu, Jan 12, 2012 at 11:30 AM, <[hidden email]> wrote:

That is a great tool that should help me out a lot, thanks.




Has anyone figured out where the "package component" is? In converting the ButtonDemo.java example from the java tutorial pages to netrexx a few problems arise. First a few syntax problems arose with the (, ) and {  and }. Also "true" and "false" are reserved words so I manually converted those to isTrue and isFalse methods. Finally "Runnable" seems to be part of a package that I can not find in the tutorials anywhere.

Kenneth Klein
Systems Specialist
[hidden email]
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[kenner]

*** I'm trying to translate this java: ***


package components;

import javax.swing.AbstractButton;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.ImageIcon;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

/*
 * ButtonDemo.java requires the following files:
 *   images/right.gif
 *   images/middle.gif
 *   images/left.gif
 */
public class ButtonDemo extends JPanel
                        implements ActionListener {
    protected JButton b1, b2, b3;

    public ButtonDemo() {
        ImageIcon leftButtonIcon = createImageIcon("images/right.gif");
        ImageIcon middleButtonIcon = createImageIcon("images/middle.gif");
        ImageIcon rightButtonIcon = createImageIcon("images/left.gif");

        b1 = new JButton("Disable middle button", leftButtonIcon);
        b1.setVerticalTextPosition(AbstractButton.CENTER);
        b1.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales
        b1.setMnemonic(KeyEvent.VK_D);
        b1.setActionCommand("disable");

        b2 = new JButton("Middle button", middleButtonIcon);
        b2.setVerticalTextPosition(AbstractButton.BOTTOM);
        b2.setHorizontalTextPosition(AbstractButton.CENTER);
        b2.setMnemonic(KeyEvent.VK_M);

        b3 = new JButton("Enable middle button", rightButtonIcon);
        //Use the default text position of CENTER, TRAILING (RIGHT).
        b3.setMnemonic(KeyEvent.VK_E);
        b3.setActionCommand("enable");
        b3.setEnabled(false);

        //Listen for actions on buttons 1 and 3.
        b1.addActionListener(this);
        b3.addActionListener(this);

        b1.setToolTipText("Click this button to disable the middle button.");
        b2.setToolTipText("This middle button does nothing when you click it.");
        b3.setToolTipText("Click this button to enable the middle button.");

        //Add Components to this container, using the default FlowLayout.
        add(b1);
        add(b2);
        add(b3);
    }

    public void actionPerformed(ActionEvent e) {
        if ("disable".equals(e.getActionCommand())) {
            b2.setEnabled(false);
            b1.setEnabled(false);
            b3.setEnabled(true);
        } else {
            b2.setEnabled(true);
            b1.setEnabled(true);
            b3.setEnabled(false);
        }
    }

    /** Returns an ImageIcon, or null if the path was invalid. */
    protected static ImageIcon createImageIcon(String path) {
        java.net.URL imgURL = ButtonDemo.class.getResource(path);
        if (imgURL != null) {
            return new ImageIcon(imgURL);
        } else {
            System.err.println("Couldn't find file: " + path);
            return null;
        }
    }

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {

        //Create and set up the window.
        JFrame frame = new JFrame("ButtonDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Create and set up the content pane.
        ButtonDemo newContentPane = new ButtonDemo();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

*** into this netrexx : ***

package components

import javax.swing.AbstractButton
import javax.swing.JButton
import javax.swing.JPanel
import javax.swing.JFrame
import javax.swing.ImageIcon
import java.awt.event.ActionEvent
import java.awt.event.ActionListener
import java.awt.event.KeyEvent

class ButtonDemo public  extends JPanel implements ActionListener

    properties -- protected
    b1 = JButton
    b2 = JButton
    b3 = JButton

    method ButtonDemo
        leftButtonIcon = ImageIcon
        leftButtonIcon = createImageIcon("images/right.gif")
        middleButtonIcon = ImageIcon
        middleButtonIcon = createImageIcon("images/middle.gif")
        rightButtonIcon = ImageIcon
        rightButtonIcon = createImageIcon("images/left.gif")
        b1 = JButton("Disable middle button", leftButtonIcon)
        b1.setVerticalTextPosition(AbstractButton.CENTER)
        b1.setHorizontalTextPosition(AbstractButton.LEADING)
        b1.setMnemonic(KeyEvent.VK_D)
        b1.setActionCommand("disable")
        b2 = JButton("Middle button", middleButtonIcon)
        b2.setVerticalTextPosition(AbstractButton.BOTTOM)
        b2.setHorizontalTextPosition(AbstractButton.CENTER)
        b2.setMnemonic(KeyEvent.VK_M)
        b3 = JButton("Enable middle button", rightButtonIcon)
        b3.setMnemonic(KeyEvent.VK_E)
        b3.setActionCommand("enable")
        b3.setEnabled(isFalse)
        b1.addActionListener(this)
        b3.addActionListener(this)
        b1.setToolTipText("Click this button to disable the middle button.")
        b2.setToolTipText("This middle button does nothing when you click it.")
        b3.setToolTipText("Click this button to enable the middle button.")
        add(b1)
        add(b2)
        add(b3)

    method actionPerformed( e=ActionEvent )
        if "disable".equals(e.getActionCommand()) then do
            b2.setEnabled(isFalse)
            b1.setEnabled(isFalse)
            b3.setEnabled(isTrue)
        end
        else do
            b2.setEnabled(isTrue)
            b1.setEnabled(isTrue)
            b3.setEnabled(isFalse)                
        end

    /** Returns an ImageIcon, or null if the path was invalid. */
    method createImageIcon( path=String ) protect static  returns ImageIcon
        imgURL = java.net.URL
        imgURL = ButtonDemo.class.getResource(path)
        if imgURL \== null then do
            return ImageIcon(imgURL)
        end
        else do
            System.err.println("Couldn't find file: " || path)
            return null
        end

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    method createAndShowGUI private static
        frame = JFrame
        frame = JFrame("ButtonDemo")
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
        newContentPane = ButtonDemo
        newContentPane = ButtonDemo()
        newContentPane.setOpaque(isTrue)
        frame.setContentPane(newContentPane)
        frame.pack()
        frame.setVisible(isTrue)

    method main( args=String[] ) static
        javax.swing.SwingUtilities.invokeLater(Runnable())

    method run
                createAndShowGUI()

method isTrue public static returns boolean
  return (1 == 1)
   
method isFalse public static returns boolean
  return \isTrue

Kenneth Klein

George Hovey <[hidden email]>
Sent by: [hidden email]

01/12/2012 12:24 PM

Please respond to
IBM Netrexx <[hidden email]>

To	IBM Netrexx <[hidden email]>
cc
Subject	Re: [Ibm-netrexx] java to rexx conversion works!

Runnable is a Java "interface".  It is described here (find it in the left hand bottom list)

http://docs.oracle.com/javase/6/docs/api/

Interfaces don't have constructors.  That is the short answer, but probably not what you're hoping for :) .  Tell us more and the Java experts will jump in.

On Thu, Jan 12, 2012 at 11:30 AM, <kenneth.klein@...> wrote:

That is a great tool that should help me out a lot, thanks.




Has anyone figured out where the "package component" is? In converting the ButtonDemo.java example from the java tutorial pages to netrexx a few problems arise. First a few syntax problems arose with the (, ) and {  and }. Also "true" and "false" are reserved words so I manually converted those to isTrue and isFalse methods. Finally "Runnable" seems to be part of a package that I can not find in the tutorials anywhere.

Kenneth Klein
Systems Specialist
kenneth.klein@...
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[alansam]

On 12 January 2012 10:44, <[hidden email]> wrote:

*** I'm trying to translate this java: ***

Like George said Runnable is an interface so you can't call it's constructor.  This is one of the weaknesses if NetRexx inner class model but it's not insurmountable.  Here's one way:

 

package components 

import javax.swing.AbstractButton 
import javax.swing.JButton 
import javax.swing.JPanel 
import javax.swing.JFrame 
import javax.swing.ImageIcon 
import java.awt.event.ActionEvent 
import java.awt.event.ActionListener 
import java.awt.event.KeyEvent 

class ButtonDemo public  extends JPanel implements ActionListener 

... 

   /** 

     * Create the GUI and show it.  For thread safety, 

     * this method should be invoked from the 

     * event-dispatching thread. 

     */ 

    method createAndShowGUI inheritable static

        frame = JFrame 

        frame = JFrame("ButtonDemo") 

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) 

        newContentPane = ButtonDemo

        newContentPane = ButtonDemo() 

        newContentPane.setOpaque(isTrue) 

        frame.setContentPane(newContentPane) 

        frame.pack() 

        frame.setVisible(isTrue) 

    method main( args=String[] ) static 

        javax.swing.SwingUtilities.invokeLater(ButtonDemo.RunnableImpl()) 

method isTrue public static returns boolean 

  return (1 == 1) 

    

method isFalse public static returns boolean 

  return \isTrue

class ButtonDemo.RunnableImpl implements Runnable

  method run public

    ButtonDemo.createAndShowGUI()

    return

I attempted to highlight the changes in the source above.  Here's a brief explanation:

• Change the visibility of your createAndShowGUI method to inheritable so subclasses can see it.
• Create a minor class ButtonDemo.RunnableImpl to implement the Runnable interface and move your run method into it.  (Note: you must prefix the call to createAndShowGUI with it's class name too.)
• Modify the call in main to create an instance of the ButtonDemo.RunnableImpl class.

Good luck,
Alan.

--
Can't tweet, won't tweet!

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[kenner]

Something basic here that I must be missing. Gets "Can't find the  main class: ButtonDemo."

C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+  Thu 01/12/2012 16:19
 > cat ButtonDemo.nrx
/*

I attempted to highlight the changes in the source above. áHere's a brief explanation:
Change the visibility of yourácreateAndShowGUIámethod toáinheritableáso subclasses can see it.
Create a minor classáButtonDemo.RunnableImpláto implement the Runnable interface and move yourárunám
ethod into it. á(Note: you must prefix the call toácreateAndShowGUIáwith it's class name too.)
Modify the call in main to create an instance of theáButtonDemo.RunnableImpláclass.
Good luck,
Alan.

*/

package components

import javax.swing.AbstractButton
import javax.swing.JButton
import javax.swing.JPanel
import javax.swing.JFrame
import javax.swing.ImageIcon
import java.awt.event.ActionEvent
import java.awt.event.ActionListener
import java.awt.event.KeyEvent
import java.awt.Component

class ButtonDemo public  extends JPanel implements ActionListener

    properties -- protected
    b1 = JButton
    b2 = JButton
    b3 = JButton

    method ButtonDemo
        leftButtonIcon = ImageIcon
        leftButtonIcon = createImageIcon("images/right.gif")
        middleButtonIcon = ImageIcon
        middleButtonIcon = createImageIcon("images/middle.gif")
        rightButtonIcon = ImageIcon
        rightButtonIcon = createImageIcon("images/left.gif")
        b1 = JButton("Disable middle button", leftButtonIcon)
        b1.setVerticalTextPosition(AbstractButton.CENTER)
        b1.setHorizontalTextPosition(AbstractButton.LEADING)
        b1.setMnemonic(KeyEvent.VK_D)
        b1.setActionCommand("disable")
        b2 = JButton("Middle button", middleButtonIcon)
        b2.setVerticalTextPosition(AbstractButton.BOTTOM)
        b2.setHorizontalTextPosition(AbstractButton.CENTER)
        b2.setMnemonic(KeyEvent.VK_M)
        b3 = JButton("Enable middle button", rightButtonIcon)
        b3.setMnemonic(KeyEvent.VK_E)
        b3.setActionCommand("enable")
        b3.setEnabled(isFalse)
        b1.addActionListener(this)
        b3.addActionListener(this)
        b1.setToolTipText("Click this button to disable the middle button.")
        b2.setToolTipText("This middle button does nothing when you click it.")
        b3.setToolTipText("Click this button to enable the middle button.")
        add(b1)
        add(b2)
        add(b3)

    method actionPerformed( e=ActionEvent )
        if "disable".equals(e.getActionCommand()) then do
            b2.setEnabled(isFalse)
            b1.setEnabled(isFalse)
            b3.setEnabled(isTrue)
        end
        else do
            b2.setEnabled(isTrue)
            b1.setEnabled(isTrue)
            b3.setEnabled(isFalse)
        end

    /** Returns an ImageIcon, or null if the path was invalid. */
    method createImageIcon( path=String ) protect static  returns ImageIcon
        imgURL = java.net.URL
        imgURL = ButtonDemo.class.getResource(path)
        if imgURL \== null then do
            return ImageIcon(imgURL)
        end
        else do
            System.err.println("Couldn't find file: " || path)
            return null
        end

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    method createAndShowGUI inheritable static
--    method createAndShowGUI private static
        frame = JFrame
        frame = JFrame("ButtonDemo")
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
        newContentPane = ButtonDemo
        newContentPane = ButtonDemo()
        newContentPane.setOpaque(isTrue)
        frame.setContentPane(newContentPane)
        frame.pack()
        frame.setVisible(isTrue)

    method main( args=String[] ) static
        javax.swing.SwingUtilities.invokeLater(ButtonDemo.RunnableImpl())
                method run
                        createAndShowGUI()
method isTrue public static returns boolean
  return (1 == 1)

method isFalse public static returns boolean
  return \isTrue

class ButtonDemo.RunnableImpl implements Runnable
method run public
        ButtonDemo.createAndShowGUI()
        return

C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+  Thu 01/12/2012 16:19
 > nrc ButtonDemo.nrx
NetRexx portable processor, version NetRexx 3.01RC2, build 1-20110925-2337
Copyright (c) RexxLA, 2011.  All rights reserved.
Parts Copyright (c) IBM Corporation, 1995,2008.
Program ButtonDemo.nrx
  === class components.ButtonDemo ===
    constructor ButtonDemo()
      overrides JPanel()
    method actionPerformed(ActionEvent)
      implements ActionListener.actionPerformed(ActionEvent)
    function createImageIcon(String)
    function createAndShowGUI
    function main(String[])
    method run
    function isTrue
    function isFalse

  === class components.ButtonDemo.RunnableImpl ===
    method run
      implements Runnable.run
Compilation of 'ButtonDemo.nrx' successful [2 classes]

C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+  Thu 01/12/2012 16:19
 > java ButtonDemo
Exception in thread "main" java.lang.NoClassDefFoundError: ButtonDemo (wrong name: components/Button
Demo)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: ButtonDemo.  Program will exit.

C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+  Thu 01/12/2012 16:19
 >
Kenneth Klein

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[alansam]

The program has a package components statement in it; it should be compiled into a components directory then run from that directory's parent via java component.ButtonDemo.

Here's an admittedly UNIX incantation:

$ find .

.

./components

./components/ButtonDemo.nrx

./components/images

./components/images/left.gif

./components/images/middle.gif

./components/images/right.gif

$ cd components/

$ nrc -keepasjava ButtonDemo

NetRexx portable processor, version NetRexx 3.01RC2, build 1-20110925-2337

Copyright (c) RexxLA, 2011.  All rights reserved.

Parts Copyright (c) IBM Corporation, 1995,2008.

Program ButtonDemo.nrx

  === class components.ButtonDemo ===

    constructor ButtonDemo()

      overrides JPanel()

    method actionPerformed(ActionEvent)

      implements ActionListener.actionPerformed(ActionEvent)

    function createImageIcon(String)

    function createAndShowGUI

    function main(String[])

    function isTrue

    function isFalse

  === class components.ButtonDemo.RunnableImpl ===

    method run

      implements Runnable.run

Compilation of 'ButtonDemo.nrx' successful [2 classes]

$ cd ..

$ find .

.

./components

./components/ButtonDemo$RunnableImpl.class

./components/ButtonDemo.class

./components/ButtonDemo.crossref

./components/ButtonDemo.java

./components/ButtonDemo.nrx

./components/images

./components/images/left.gif

./components/images/middle.gif

./components/images/right.gif

$ java components.ButtonDemo

Alan.

On 12 January 2012 13:24, <[hidden email]> wrote:

Something basic here that I must be missing. Gets "Can't find the  main class: ButtonDemo."


C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+  Thu 01/12/2012 16:19
 > java ButtonDemo
Exception in thread "main" java.lang.NoClassDefFoundError: ButtonDemo (wrong name: components/Button
Demo)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: ButtonDemo.  Program will exit.

C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+  Thu 01/12/2012 16:19
 >
Kenneth Klein

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[Marc Remes-2]

On 01/12/2012 10:24 PM, [hidden email] wrote:
..
> package components
..
> Compilation of 'ButtonDemo.nrx' successful [2 classes]
>
> C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+ Thu 01/12/2012 16:19
>  > java ButtonDemo
> Exception in thread "main" java.lang.NoClassDefFoundError: ButtonDemo (wrong name: components/Button
> Demo)
..

You need to put the ButtonDemo* class files in directory 'components' (for convenience also the source files and compile
in that directory) because of the packhage statement.
Then invoke the class by FQN: java components.ButtonDemo

Marc

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[alansam]

Kenneth,

On 12 January 2012 13:24, <[hidden email]> wrote:

8X ------------------------------------------------------

 

    method main( args=String[] ) static
        javax.swing.SwingUtilities.invokeLater(ButtonDemo.RunnableImpl())

                method run
                        createAndShowGUI() 

 

8X ------------------------------------------------------

 

C:\Documents and Settings\keklein\My Documents\REXX\NetRexx\bin+  Thu 01/12/2012 16:19

 > nrc ButtonDemo.nrx
NetRexx portable processor, version NetRexx 3.01RC2, build 1-20110925-2337
Copyright (c) RexxLA, 2011.  All rights reserved.
Parts Copyright (c) IBM Corporation, 1995,2008.
Program ButtonDemo.nrx
  === class components.ButtonDemo ===
    constructor ButtonDemo()
      overrides JPanel()
    method actionPerformed(ActionEvent)
      implements ActionListener.actionPerformed(ActionEvent)
    function createImageIcon(String)
    function createAndShowGUI
    function main(String[])
    method run
    function isTrue
    function isFalse

  === class components.ButtonDemo.RunnableImpl ===
    method run
      implements Runnable.run
Compilation of 'ButtonDemo.nrx' successful [2 classes]

8X ------------------------------------------------------

You should also remove the run method from the ButtonDemo class, it's never called and is sure to lead to confusion later.  The run method in the RunnableImpl implementation of the Runnable interface is the one that will be called by Swing.

Alan.

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[kenner]

Working source code from

http://docs.oracle.com/javase/tutorial/uiswing/examples/components/ButtonDemoProject/src/components/ButtonDemo.java

translated to netrexx with java2nrx.bat

and tweaked with outstanding help from this list.


 > type ButtonDemo.nrx
/*

I attempted to highlight the changes in the source above. áHere's a brief explanation:
Change the visibility of yourácreateAndShowGUIámethod toáinheritableáso subclasses can see it.
Create a minor classáButtonDemo.RunnableImpláto implement the Runnable interface and move yourárunám
ethod into it. á(Note: you must prefix the call toácreateAndShowGUIáwith it's class name too.)
Modify the call in main to create an instance of theáButtonDemo.RunnableImpláclass.
Good luck,
Alan.

*/

package components

import javax.swing.AbstractButton
import javax.swing.JButton
import javax.swing.JPanel
import javax.swing.JFrame
import javax.swing.ImageIcon
import java.awt.event.ActionEvent
import java.awt.event.ActionListener
import java.awt.event.KeyEvent
import java.awt.Component

class ButtonDemo public  extends JPanel implements ActionListener

    properties -- protected
    b1 = JButton
    b2 = JButton
    b3 = JButton

    method ButtonDemo
        leftButtonIcon = ImageIcon
        leftButtonIcon = createImageIcon("images/right.gif")
        middleButtonIcon = ImageIcon
        middleButtonIcon = createImageIcon("images/middle.gif")
        rightButtonIcon = ImageIcon
        rightButtonIcon = createImageIcon("images/left.gif")
        b1 = JButton("Disable middle button", leftButtonIcon)
        b1.setVerticalTextPosition(AbstractButton.CENTER)
        b1.setHorizontalTextPosition(AbstractButton.LEADING)
        b1.setMnemonic(KeyEvent.VK_D)
        b1.setActionCommand("disable")
        b2 = JButton("Middle button", middleButtonIcon)
        b2.setVerticalTextPosition(AbstractButton.BOTTOM)
        b2.setHorizontalTextPosition(AbstractButton.CENTER)
        b2.setMnemonic(KeyEvent.VK_M)
        b3 = JButton("Enable middle button", rightButtonIcon)
        b3.setMnemonic(KeyEvent.VK_E)
        b3.setActionCommand("enable")
        b3.setEnabled(isFalse)
        b1.addActionListener(this)
        b3.addActionListener(this)
        b1.setToolTipText("Click this button to disable the middle button.")
        b2.setToolTipText("This middle button does nothing when you click it.")
        b3.setToolTipText("Click this button to enable the middle button.")
        add(b1)
        add(b2)
        add(b3)

    method actionPerformed( e=ActionEvent )
        if "disable".equals(e.getActionCommand()) then do
            b2.setEnabled(isFalse)
            b1.setEnabled(isFalse)
            b3.setEnabled(isTrue)
        end
        else do
            b2.setEnabled(isTrue)
            b1.setEnabled(isTrue)
            b3.setEnabled(isFalse)
        end

    /** Returns an ImageIcon, or null if the path was invalid. */
    method createImageIcon( path=String ) protect static  returns ImageIcon
        imgURL = java.net.URL
        imgURL = ButtonDemo.class.getResource(path)
        if imgURL \== null then do
            return ImageIcon(imgURL)
        end
        else do
            System.err.println("Couldn't find file: " || path)
            return null
        end

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    method createAndShowGUI inheritable static
--    method createAndShowGUI private static
        frame = JFrame
        frame = JFrame("ButtonDemo")
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
        newContentPane = ButtonDemo
        newContentPane = ButtonDemo()
        newContentPane.setOpaque(isTrue)
        frame.setContentPane(newContentPane)
        frame.pack()
        frame.setVisible(isTrue)

    method main( args=String[] ) static
        javax.swing.SwingUtilities.invokeLater(ButtonDemo.RunnableImpl())
--              method run
--                      createAndShowGUI()
method isTrue public static returns boolean
  return (1 == 1)

method isFalse public static returns boolean
  return \isTrue

class ButtonDemo.RunnableImpl implements Runnable
method run public
        ButtonDemo.createAndShowGUI()
        return


Kenneth Klein


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[Marc Remes-2]

Glad that worked.
The inner class was not translated because it's an anonymous one. Difficult to trap these.
Also, true and false could be translated to 1 and 0 in NetRexx, but they are reserved words only for literal values.
Might need some investigation to perform an automatic translation..

I do think the JComponents are the way to go for Java GUI development. They are relatively easy to produce, provide a
wealth of out-of-the-box features and good documentation to extend the behaviour.

Marc

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[alansam]

On 13 January 2012 07:11, Marc Remes <[hidden email]> wrote:

Glad that worked.
The inner class was not translated because it's an anonymous one. Difficult to trap these.
Also, true and false could be translated to 1 and 0 in NetRexx, but they are reserved words only for literal values. Might need some investigation to perform an automatic translation..

 

IMO it's better that true/false aren't translated to 1/0 as that would mean the initial type would be changed from boolean to int, which in turn may lead to undesirable side effects.  Results from tools like this always require a little clean-up work and any decent programmer's editor will make that a snap.  Having 98% to 99% of the conversion work done for you is a more than satisfactory outcome and saves a lot of the grunt work.

Alan.

 

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[George Hovey-2]

Hi Kenneth,
This is wonderful news, and also has implications for our strategies in providing aid to newcomers like you.

You are the first I can remember who attacked the Java Tutorial head on (evidently with considerable success), and it could be very useful if you commented on your experiences while they are fresh in your mind.  Would you tell us anything you find noteworthy about the experience?  About your programming experience?  A few (random) questions that spring to my mind:

• Can you make some sense of Java code, perhaps because you have a C/C++ background?
• Did you start the Tutorials with basics (Java types, syntax, etc) or jump directly to the Swing Tutorial?
• How would you rate the quality of the Java Tutorial?
• Can you interpret (perhaps partially) a Javadoc?
  

Regards,
George

On Fri, Jan 13, 2012 at 11:57 AM, Alan Sampson <[hidden email]> wrote:

On 13 January 2012 07:11, Marc Remes <[hidden email]> wrote:

Glad that worked.
The inner class was not translated because it's an anonymous one. Difficult to trap these.
Also, true and false could be translated to 1 and 0 in NetRexx, but they are reserved words only for literal values. Might need some investigation to perform an automatic translation..

 

IMO it's better that true/false aren't translated to 1/0 as that would mean the initial type would be changed from boolean to int, which in turn may lead to undesirable side effects.  Results from tools like this always require a little clean-up work and any decent programmer's editor will make that a snap.  Having 98% to 99% of the conversion work done for you is a more than satisfactory outcome and saves a lot of the grunt work.

Alan.

 

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[Robert L Hamilton]

If you compile the NetRexx does it look anything like the Java from which it was produced?

Bob H

On Fri, Jan 13, 2012 at 12:37 PM, George Hovey <[hidden email]> wrote:

Hi Kenneth,
This is wonderful news, and also has implications for our strategies in providing aid to newcomers like you.

You are the first I can remember who attacked the Java Tutorial head on (evidently with considerable success), and it could be very useful if you commented on your experiences while they are fresh in your mind.  Would you tell us anything you find noteworthy about the experience?  About your programming experience?  A few (random) questions that spring to my mind:

• Can you make some sense of Java code, perhaps because you have a C/C++ background?
• Did you start the Tutorials with basics (Java types, syntax, etc) or jump directly to the Swing Tutorial?
• How would you rate the quality of the Java Tutorial?
• Can you interpret (perhaps partially) a Javadoc?
  

Regards,
George

On Fri, Jan 13, 2012 at 11:57 AM, Alan Sampson <[hidden email]> wrote:

On 13 January 2012 07:11, Marc Remes <[hidden email]> wrote:

Glad that worked.
The inner class was not translated because it's an anonymous one. Difficult to trap these.
Also, true and false could be translated to 1 and 0 in NetRexx, but they are reserved words only for literal values. Might need some investigation to perform an automatic translation..

 

IMO it's better that true/false aren't translated to 1/0 as that would mean the initial type would be changed from boolean to int, which in turn may lead to undesirable side effects.  Results from tools like this always require a little clean-up work and any decent programmer's editor will make that a snap.  Having 98% to 99% of the conversion work done for you is a more than satisfactory outcome and saves a lot of the grunt work.

Alan.

 

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[ThSITC]

Hi Marc,
    many thanks for those insigths :-)

The do help me a lot in my current work and the decisions to be taken
for my own soft.
Thanks again,
Thomas.
=========================================================================
Am 13.01.2012 16:11, schrieb Marc Remes:

> Glad that worked.
> The inner class was not translated because it's an anonymous one.
> Difficult to trap these.
> Also, true and false could be translated to 1 and 0 in NetRexx, but
> they are reserved words only for literal values. Might need some
> investigation to perform an automatic translation..
>
> I do think the JComponents are the way to go for Java GUI development.
> They are relatively easy to produce, provide a wealth of
> out-of-the-box features and good documentation to extend the behaviour.
>
> Marc
>
> _______________________________________________
> Ibm-netrexx mailing list
> [hidden email]
> Online Archive : http://ibm-netrexx.215625.n3.nabble.com/
>
>

--
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Asscociation (www.rexxla.org) Member of the NetRexx Developer's Team
(www.netrexx.org)

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[kenner]

this was my method of coping with the type of True/False.

method isTrue public static returns boolean
  return (1 == 1)
   
method isFalse public static returns boolean
  return \isTrue

I have also simply added my own public properties:

                mytrue = boolean 1
                myfalse = boolean 0

Kenneth Klein

Alan Sampson <[hidden email]>
Sent by: [hidden email]

01/13/2012 12:17 PM

Please respond to
IBM Netrexx <[hidden email]>

To	IBM Netrexx <[hidden email]>
cc
Subject	Re: [Ibm-netrexx] java to rexx conversion works! - mostly...now        completely

On 13 January 2012 07:11, Marc Remes <remesm@...> wrote:
Glad that worked.
The inner class was not translated because it's an anonymous one. Difficult to trap these.
Also, true and false could be translated to 1 and 0 in NetRexx, but they are reserved words only for literal values. Might need some investigation to perform an automatic translation..

 
IMO it's better that true/false aren't translated to 1/0 as that would mean the initial type would be changed from boolean to int, which in turn may lead to undesirable side effects.  Results from tools like this always require a little clean-up work and any decent programmer's editor will make that a snap.  Having 98% to 99% of the conversion work done for you is a more than satisfactory outcome and saves a lot of the grunt work.

Alan.
 
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[kenner]

Would you tell us anything you find noteworthy about the experience?  About your programming experience?  A few (random) questions that spring to my mind:

1 Can you make some sense of Java code, perhaps because you have a C/C++ background?
2 Did you start the Tutorials with basics (Java types, syntax, etc) or jump directly to the Swing Tutorial?
3 How would you rate the quality of the Java Tutorial?
4 Can you interpret (perhaps partially) a Javadoc?

I've been programming since 1982. Even in those days we pushed "structured programming" in COBOL along the lines of OO in a way. Gotos and spaghetti code was tabu. I find JAVA very much like spaghetti code. Assembler coding was also very procedural, top down, you always new which instruction was next and traces made sense. I love(d) REXX from day one and have written 1000's of lines of add-hoc code for system utilities on the mainframe. I dabbled with C++ for a while and praise the use of functions like it does.

1) Java code is still mysterious even when I am looking at and tracing a working example. There is so much under the covers. Coding in Java is not programming, it is trying to second guess the infinitely wise designers of all these classes and subclasses and methods. At first I could not tell the java code from properties specific to the program I was looking at. Even the Netrexx code was a blur between what was a reserved word and field-name in this program. When you define methods and classes the source becomes the programming language.

2) I tried to start from the very beginning with the basics and you all know how it goes, I got impatient and just wanted to see something work. That's how I turned a java example using AboutFrame, Guiapp and actionlistener into a multiple choice quiz and a true or false quiz. When I got really bogged down I went back to the basics.

3) "The Java Tutorial" kept showing up when I was googl'ing for solutions. Lot's of good stuff there, but you still need to translate it into Netrexx. It has grown into my go-to site when I get confused on how to use a new class or component.

4) Javadoc is still beyond me. I tripped over it a few times but have not found a use for it with Netrexx. A primer there would be great.

Kenneth Klein

George Hovey <[hidden email]>
Sent by: [hidden email]

01/13/2012 01:58 PM

Please respond to
IBM Netrexx <[hidden email]>

To	IBM Netrexx <[hidden email]>
cc
Subject	Re: [Ibm-netrexx] java to rexx conversion works! - mostly...now        completely

Hi Kenneth,
This is wonderful news, and also has implications for our strategies in providing aid to newcomers like you.

You are the first I can remember who attacked the Java Tutorial head on (evidently with considerable success), and it could be very useful if you commented on your experiences while they are fresh in your mind.  Would you tell us anything you find noteworthy about the experience?  About your programming experience?  A few (random) questions that spring to my mind:

• Can you make some sense of Java code, perhaps because you have a C/C++ background?
• Did you start the Tutorials with basics (Java types, syntax, etc) or jump directly to the Swing Tutorial?
• How would you rate the quality of the Java Tutorial?
• Can you interpret (perhaps partially) a Javadoc?

Regards,
George

On Fri, Jan 13, 2012 at 11:57 AM, Alan Sampson <alansamps@...> wrote:


On 13 January 2012 07:11, Marc Remes <remesm@...> wrote:
Glad that worked.
The inner class was not translated because it's an anonymous one. Difficult to trap these.
Also, true and false could be translated to 1 and 0 in NetRexx, but they are reserved words only for literal values. Might need some investigation to perform an automatic translation..

 
IMO it's better that true/false aren't translated to 1/0 as that would mean the initial type would be changed from boolean to int, which in turn may lead to undesirable side effects.  Results from tools like this always require a little clean-up work and any decent programmer's editor will make that a snap.  Having 98% to 99% of the conversion work done for you is a more than satisfactory outcome and saves a lot of the grunt work.

Alan.
 
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[kenner]

Here is another sample from the java tutorial, converted to netrexx and working.

The conversion with java2nrx was fairly complete. A couple stray curly brackets survived. A couple properties keywords were superfluously created. The exception processing didn't compile so it's just commented out. And I still don't understand how the class "Runnable" works, but I just blindly followed Alan's tips like with ButtonDemo.

Is the source to java2nrx written in netrexx? Is it available?


01/16/2012 13:41
 > type FocusConceptsDemo.nrx
package misc

import java.awt.
import java.awt.event.
import javax.swing.

class FocusConceptsDemo public  extends JPanel

    properties static
    frame = JFrame

    properties
    t1 = JTextField
    t2 = JTextField
    t3 = JTextField
    t4 = JTextField

--    properties
    b1 = JButton
    b2 = JButton
    b3 = JButton
    b4 = JButton

--    properties
    text1 = JTextArea

    method FocusConceptsDemo
        super(BorderLayout())
        b1 = JButton("JButton")
        b2 = JButton("JButton")
        b3 = JButton("JButton")
        b4 = JButton("JButton")
        buttonPanel = JPanel
        buttonPanel = JPanel(GridLayout(1, 1))
        buttonPanel.add(b1)
        buttonPanel.add(b2)
        buttonPanel.add(b3)
        buttonPanel.add(b4)
        text1 = JTextArea("JTextArea", 15, 40)
        textAreaPanel = JPanel
        textAreaPanel = JPanel(BorderLayout())
        textAreaPanel.add(text1, BorderLayout.CENTER)
        t1 = JTextField("JTextField")
        t2 = JTextField("JTextField")
        t3 = JTextField("JTextField")
        t4 = JTextField("JTextField")
        textFieldPanel = JPanel
        textFieldPanel = JPanel(GridLayout(1, 1))
        textFieldPanel.add(t1)
        textFieldPanel.add(t2)
        textFieldPanel.add(t3)
        textFieldPanel.add(t4)
        add(buttonPanel, BorderLayout.PAGE_START)
        add(textAreaPanel, BorderLayout.CENTER)
        add(textFieldPanel, BorderLayout.PAGE_END)
        setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20))

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
method createAndShowGUI inheritable  static
        frame = JFrame("FocusConceptsDemo")
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
        newContentPane = JComponent
        newContentPane = FocusConceptsDemo()
        newContentPane.setOpaque(isTrue)
        frame.setContentPane(newContentPane)
        frame.pack()
        frame.setVisible(isTrue)

method isTrue public static returns boolean
  return (1 == 1)

method isFalse public static returns boolean
   return \isTrue

method main( args=String[] ) static
--       do
             UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel")
--        catch  ex=UnsupportedLookAndFeelException
--           ex.printStackTrace()
--        catch  ex=IllegalAccessException
--           ex.printStackTrace()
--        catch  ex=InstantiationException
--           ex.printStackTrace()
--        catch  ex=ClassNotFoundException
--           ex.printStackTrace()
--       end
       UIManager.put("swing.boldMetal", Boolean.FALSE)
       javax.swing.SwingUtilities.invokeLater(FocusConceptsDemo.RunnableImp())


class FocusConceptsDemo.RunnableImp implements Runnable
method run public
    FocusConceptsDemo.createAndShowGUI()
        return


Kenneth Klein

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