JIT Bug

[Mike Cowlishaw-2]

> This happens when 1.2 is installed.  It happens on Solaris, NT (using
> the sun JDK), Linux too.

No .. that problem is only on the MS JVM.

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Mike Cowlishaw, IBM Fellow
mailto:[hidden email]  --  http://www2.hursley.ibm.com


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[Mike Cowlishaw-2]

>>> This happens when 1.2 is installed.  It happens on Solaris, NT (using
>>> the sun JDK), Linux too.
>>
>>No .. that problem is only on the MS JVM.
>
> Mike, The problem below is NOT an MS JVM problem:

Sorry -- yes, you're quite right.  Different problem.   Sun moved
javac to a separate .jar file, which needs to be in the classpath.
This is documented in the NetRexx User's/Installation Guide.

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Mike Cowlishaw, IBM Fellow
mailto:[hidden email]  --  http://www2.hursley.ibm.com


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[mcbrides]

As of this afternoon, the Java newsserver at ncc.hursley.ibm.com is back online.

The list of available groups at that newsserver is:

ibmpub.java
ibmpub.java.aix
ibmpub.java.announce
ibmpub.java.cics
ibmpub.java.os2
ibmpub.java.os390
ibmpub.java.os400
ibmpub.java.win31
ibmpub.java.vmesa

I've been asking for a NetRexx group on that server, making it just a tad more
public than this mail list, but so far Hursley has turned a deaf ear... And I
mean DEAF...

However, I'll continue.


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| Jerry McBride      |
| [hidden email] |
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[mcbrides]

I've been porting a great deal of java code to NetRexx these last fews days and
I've come up against a wall on this one.

It's the java console sample by Peter van der Linden, named EasyIn.java.
In his code he uses the following in his code to setup the method getToken.
What I don't understand is how to return a StringTokenizer... If it was a
float, int, string, etc, I'd have no problems...

    StringTokenizer getToken() throws IOException {
       String s = br.readLine();
       return new StringTokenizer(s);
    }

All in all, I've got it all pretty well sorted out, save this last...
brain-block. Any ideas?


The entire class follows:

// Simple input from the keyboard for all primitive types. ver 1.0
// Copyright (c) Peter van der Linden,  May 5 1997.
//     corrected error message 11/21/97
//
// The creator of this software hereby gives you permission to:
//  1. copy the work without changing it
//  2. modify the work providing you send me a copy which I can
//     use in any way I want, including incorporating into this work.
//  3. distribute copies of the work to the public by sale, lease,
//     rental, or lending
//  4. perform the work
//  5. display the work
//  6. fold the work into a funny hat and wear it on your head.
//
// This is not thread safe, not high performance, and doesn't tell EOF.
// It's intended for low-volume easy keyboard input.
// An example of use is:
//     EasyIn easy = new EasyIn();
//     int i = easy.readInt();   // reads an int from System.in
//     float f = easy.readFloat();   // reads a float from System.in

import java.io.*;
import java.util.*;

class EasyIn {
    static InputStreamReader is = new InputStreamReader( System.in );
    static BufferedReader br = new BufferedReader( is );
    StringTokenizer st;

    StringTokenizer getToken() throws IOException {
       String s = br.readLine();
       return new StringTokenizer(s);
    }

    boolean readBoolean() {
       try {
          st = getToken();
          return new Boolean(st.nextToken()).booleanValue();
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readBoolean");
          return false;
       }
    }

    byte readByte() {
       try {
         st = getToken();
         return Byte.parseByte(st.nextToken());
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readByte");
          return 0;
       }
    }

    short readShort() {
       try {
         st = getToken();
         return Short.parseShort(st.nextToken());
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readShort");
          return 0;
       }
    }

    int readInt() {
       try {
         st = getToken();
         return Integer.parseInt(st.nextToken());
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readInt");
          return 0;
       }
    }

    long readLong() {
       try {
         st = getToken();
         return Long.parseLong(st.nextToken());
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readLong");
          return 0L;
       }
    }

    float readFloat() {
       try {
         st = getToken();
         return new Float(st.nextToken()).floatValue();
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readFloat");
          return 0.0F;
       }
    }

    double readDouble() {
       try {
         st = getToken();
         return new Double(st.nextToken()).doubleValue();
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readDouble");
          return 0.0;
       }
    }

    char readChar() {
       try {
         String s = br.readLine();
         return s.charAt(0);
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readChar");
          return 0;
       }
    }

    String readString() {
       try {
         return br.readLine();
       } catch (IOException ioe) {
          System.err.println("IO Exception in EasyIn.readString");
          return "";
       }
    }

// This method is just here to test the class
   public static void main (String args[]){
       EasyIn easy = new EasyIn();

       System.out.print("enter char: "); System.out.flush();
       System.out.println("You entered: " + easy.readChar() );

       System.out.print("enter String: "); System.out.flush();
       System.out.println("You entered: " + easy.readString() );

       System.out.print("enter boolean: "); System.out.flush();
       System.out.println("You entered: " + easy.readBoolean() );

       System.out.print("enter byte: "); System.out.flush();
       System.out.println("You entered: " + easy.readByte() );

       System.out.print("enter short: "); System.out.flush();
       System.out.println("You entered: " + easy.readShort() );

       System.out.print("enter int: "); System.out.flush();
       System.out.println("You entered: " + easy.readInt() );

       System.out.print("enter long: "); System.out.flush();
       System.out.println("You entered: " + easy.readLong() );

       System.out.print("enter float: "); System.out.flush();
       System.out.println("You entered: " + easy.readFloat() );

       System.out.print("enter double: "); System.out.flush();
       System.out.println("You entered: " + easy.readDouble() );
   }

}





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| [hidden email] |
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[dIon Gillard/Multitask Consulting/AU]

    StringTokenizer getToken() throws IOException {
      String s = br.readLine();
      return new StringTokenizer(s);
   }

translates to:

method getToken() returns StringTokenizer Signals IOException
        s =  String br.readLine()
        return StringTokenizer(s)


just make sure you import StringTokenizer at the top of the class...
       
--
dIon Gillard, Multitask Consulting
Work:      http://www.multitask.com.au
Play:        http://www.trongus.com

[mcbrides]

>
>    StringTokenizer getToken() throws IOException {
>       String s = br.readLine();
>       return new StringTokenizer(s);
>    }
>
>translates to:
>
>method getToken() returns StringTokenizer Signals IOException
>     s =  String br.readLine()
>     return StringTokenizer(s)
>
>
>just make sure you import StringTokenizer at the top of the class...
>

You know what? I knew that! For reasons I can't explain I was thinking that
StringTokenizer couldn't be returned from a method.

Yet again I tap my desktop plaque that bares the following inscription...

"Everything is an object!"



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| [hidden email] |
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