Redirecting JVM thread dump to a file

Question

The full thread dump of the JVM can be obtained by pressing ctrl-break in windows on the prompt from which the JVM is run and on solaris by executing the command "kill -QUIT pid" where pid is the process id of the JVM.
The thread dump will be printed on the console by default. But the requirement is to redirect this to a file. The following code redirects the dump to a file "Dump.txt".
System.out.close();
System.setOut(new PrintStream(new FileOutputStream("Dump.txt")));
Here we need to close the standard output stream "System.out" prior to redirecting it to a file. This is because if System.setOut is done without closing it the JVM still gives the thread dump on the initial standard output i.e., console. But if console is closed once we cannot get it back for the rest of the running time of the JVM.
IS THERE ANY SOLUTION TO THIS PROBLEM OF REDIRECTING DUMP TO A FILE, WITHOUT CLOSING THE STANDARD OUTPUT? The application should be able to get the standard output(console) back whenever it's required.

Answer 1

Hi,
I think that you can use a API for logs, as Log4J from Apache or Logger in java.util.logging... both are very simple...
good luck.
Mad.