how to print stack trace to stdout in java for debug?

Question

I am new to java.

I want something like debug_print_backtrace in java.

I want to print current stack trace to stdout or to intellij idea log window for debug.

I used to use debug_print_backtrace in php to find some stack infos in runtime for debug.

I add this question for google searching in case I forgot how to do that, so when I search "java print stack trace", I can get what I want right away. — bronze man
– bronze man, Commented Oct 9, 2014 at 17:34

bronze man · Accepted Answer · 2018-03-30 02:48:24Z

24

You only need one line.

new Exception().printStackTrace(System.out);

print stack trace to stderr:

new Exception().printStackTrace();

answered Oct 9, 2014 at 17:26

bronze man

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2 Comments

This goes to stderr. If you want to have it in stdout: new Exception().printStackTrace(System.out);

@ROMANIA_engineer I always think stderr and stdout is almost the same stuff. Thanks for your correct.

Venkateswar Rao · Accepted Answer · 2014-10-09 18:07:49Z

-3

Instead of printing in console, use this javax.swing.JOptionPane.showMessageDialog(null,new Exception().printStackTrace());

answered Oct 9, 2014 at 18:07

Venkateswar Rao

1

I am using java in android. It just do not have the package of javax.swing .