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Depends on whether you've used 1.4 specific classes. If you haven't, and recompile with<br />
<br />
javac -target 1.3 YourApp.java<br />
<br />
you should be OK
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Depends on whether you've used 1.4 specific classes. If you haven't, and recompile with

javac -target 1.3 YourApp.java

you should be OK

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&gt;&gt; javac -target 1.3 YourApp.java<br />
You don't have to specify the -target option as the default for JDK 1.4 is 1.3 (sic). 
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>> javac -target 1.3 YourApp.java
You don't have to specify the -target option as the default for JDK 1.4 is 1.3 (sic).

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orangehead911,<br />
If the -target option is already defaulted to 1.3 does that mean that 1.3 and 1.4 basically are the same for javac and therefore there is not much to worry about?
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orangehead911,
If the -target option is already defaulted to 1.3 does that mean that 1.3 and 1.4 basically are the same for javac and therefore there is not much to worry about?

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<div class="content wysiwyg-content">
I have been keeping my SDK fairly current on Linux (Sun 1.4.2_03) and the java application being developed is working fine. I know that the SDK comes complete with a jre that can be included if I install the application on other Linux computers.<br />
<br />
My question is generic in that if I move my application, being developed with 1.4.2_03, &nbsp;to other Linux computers that have some other version of the jre (1.3.1 from blackdown.org or Sun for example), should I have a lot to worry about?
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I have been keeping my SDK fairly current on Linux (Sun 1.4.2_03) and the java application being developed is working fine. I know that the SDK comes complete with a jre that can be included if I install the application on other Linux computers.

My question is generic in that if I move my application, being developed with 1.4.2_03,  to other Linux computers that have some other version of the jre (1.3.1 from blackdown.org or Sun for example), should I have a lot to worry about?

Java JRE and backwards compatibility

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.