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Re: Some observations

On Monday, December 18, 2000, at 12:13 AM, Sean Allen wrote:

> The Java Product Versionin Specification (November 30 1998 ) 
> Says 
> An implementation of the Java Virtual Machine should be identify both the  
> specification and the implementation. These properties should be added to  
> those already available using java.lang.System.getProperties. 
> java.vm.specification.version 
> i.e. 1.3 
> java.vm.specification.vendor 
> i.e. Sun Microsystems Inc. 
> java.vm.specification.name 
> i.e. JavaTM Virtual Machine Specification 
> java.vm.version 
> i.e. Solaris 5.5 Native 1.0 build32 
> java.vm.vendor 
> i.e. Sun Microsystems Inc. 
> java.vm.name 
> i.e. Solaris 5.x JVM 

Here's my test app:

import java.io.*;

class version {

    protected static void printProperty(String prop) {
        System.out.println(prop + " = " + System.getProperty(prop));
    }

    public static void main(String[] args) throws IOException,InterruptedException {
        String javaversion[]={"/usr/bin/java","-version"};
    
        printProperty("java.vm.specification.version");
        printProperty("java.vm.specification.vendor");
        printProperty("java.vm.specification.name");
        printProperty("java.vm.version");
        printProperty("java.vm.vendor");
        printProperty("java.vm.name");
        System.out.println("Calling java -version:");
        
        Process javaproc=Runtime.getRuntime().exec(javaversion);
        javaproc.waitFor();
        InputStream data=javaproc.getErrorStream();
        for(;data.available()>0;System.out.print((char)data.read()));
    }
}

And here's my output:

java.vm.specification.version = 1.0
java.vm.specification.vendor = Sun Microsystems Inc.
java.vm.specification.name = Java Virtual Machine Specification
java.vm.version = 1.3.0
java.vm.vendor = Apple Computer, Inc.
java.vm.name = Java HotSpot(TM) Client VM
Calling java -version:
java version "1.2.2"
Java HotSpot(TM) Client VM (1.3.0, mixed mode, internal release build)

No property told the right version. Is this a bug?

andy


-- 
Description forthcoming.