Redirect errors, also JAR woes

Question

Hello,
Two mysteries:
1. How do you redirect runtime errors to a file instead of to the default output(the screen)?
2. My JAR files executes, but none of the images are showing up. I see that the images are bound in the JAR file when I do the "jar tf" command. Also some of my functions are not operational. I used the Manifest with the line "Main-Class: MyProgramName.jar"
It seems as though I may need to bind the java packages into the JAR too. The JAR is a small application for download from my site. What do I have to do to make the jar work? The online documentation is cryptic!
Thank you

Answer 1

Fixing Main-Class: MyProgramName did not fix the
problem. If the native api is included in the JVM,
what would make everything in the image/* directory
not show up? It's in the relative directory under the
main dir. IE:That depends. It depends on whether that directory is in the jar file or outside it, and it depends on how your code is trying to read it. And what do you mean by "the native api is included in the JVM"?
Also when I click on a component a jdialog is supposed
to open. This is not happening with my jar app.Probably because it isn't starting at all -- but again, that's just a guess.
How do I redirect errors from standard output to a
file?
System.setErr(new PrintStream(new FileOutputStream(...)));