Java, get core dump

I would like to be able to analyze a Java core dump in the same manner that one would analyze a core dump from a process on a UNIX system. However, I am not interested in having the information from the process, only the JVM level stack, heap, etc. The core dump would contain information on Java methods, variables, etc.

1. How can I tell the JVM to build a Java-level core dump?
2. What is a good tool to analyze said dump?

For instan开发者_StackOverflowce, if this code was executed

public static void foo() {
  //trigger core dump
}
public static void main(String args[]) {
 foo();
}

I would get a core dump showing a stack of main-->foo

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The easy way to do this kind of thing is to attach an interactive debugger to the JVM, pause it, and use the debugger to look at the stacks, etc.

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jstack <process id>

Will dump a stack trace of all of the running threads. You will need to be the same user as the running java process.

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You can use jmap to generate a heap dump.

Once you have a heap dump, you can use a tool like the Eclipse Memory Analyzer Tool to examine the dump.

And if what you're looking for is a stack trace, try something like Thread.currentThread().getStackTrace().