JRE 1.3.1 Bug May Screw Up Your Executable JAR File

Question

Hi;
I just submitted this bug report to sun.
It could save you a lot of pain.
If you have both the JDK and a seperatley obtained Sun JRE on your computer you could build a deprecated code and not know it until you distribute your app to your user or remove jdk\bin from
your class path.
======================================================================
Bug Report: JDK 1.3.1 doesn't match JRE 1.3.1
======================================================================
Hi;
I discovered that the jre ( java.exe, javaw.exe ) that comes with the
jdk 1.3.1 supports a deprecated option that the stand alone jre 1.3.1
does not. Not all jre 1.3.1's of the same build are the same.
In the jre that comes with jdk 1.3.1 you can execute code that uses
"Cp850" for character encoding. In the stand alone jre 1.3.1 you
cannot and get an exception thrown.
This is a particularly insidious bug as many java programmers have
both the jre that comes with the jdk and a stand alone version on
their computers( for example, getting the java plugin for your browser).
You can easily compile, run, and distribute java code that you think will
work with the jre 1.3.1 only distribution....but will not.
I figured this out ( after much pain ) after taking the c:\jdk\bin out
of my path. The same code which execute with the jdk's jre, failed
with the same version sun jre that I got as a separate distribution.
Here is the chunk of code where I discovered this. I have put the
block of code between "=======" lines. The code is further followed
by more explanatory details:
================================================================
public static void main(String argv[])
String result = " ";
// Read The Input File Into A String
try
FileInputStream file = new FileInputStream ("in.txt");
DataInputStream in = new DataInputStream (file);
byte[] b = new byte[ in.available() ];
in.readFully (b);
in.close ();
//result = new String (b, 0, b.length, "US-ASCII");
result = new String (b, 0, b.length, "Cp850");
System.out.println(result);
catch ( Exception e )
e.printStackTrace();
=================================================================
I ran the command "java -version" on both jre 1.3.1 s just to make
sure that each jre 1.3.1 was the same. The output of "java -version
was identical:
From:
C:\Program Files\JavaSoft\JRE\1.3.1\bin\java.exe ( & javaw.exe )
=========================================================
java version "1.3.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)
From:
C:\JDK\bin\java.exe ( & javaw.exe )
=========================================================
java version "1.3.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)
My apologies if this "bug" is really an illusion of my ignorance.

Answer 1

Try making sure you have a 'i18n.jar' file in either the JDK or JRE's 'lib' directory (depending upon which one you're using).