How do I write to the Netbeans Debugger Console (in Java)?

Question

Netbeans has a tabbed window in the Output section called "Debugger Console". Is it possible to write a message to this window using Java? If so, how?

Answer 1

The messages you see in the debugger console are either

1. informations given by the debugger itself (breakpoint added, for example)
2. custom messages associated with a breakpoint

When you add a breakpoint to a line of code, the default behavior of the breakpoint is to suspend the thread that executed the line of code, and to print the text "Breakpoint hit at line {lineNumber} in class {className} by thread {threadName}." .

You can configure a breakpoint to print a custom text. This text will be output in the debugger console when it reaches the breakpoint. To do so, right click on a breakpoint, open the propoerties window, and enter your text in the field Print text .

A useful trick is to configure a breakpoint so that it does not block ( suspend : no thread ), and to enter a text. The effect is the same than adding println lines in your code, but the benefit is that you don't have to recompile the code, and it's easier to activate/deactivate these debugger logs (and it obviously does not stay on production code).

Note that, in the text of the breakpoint, you can use one of the special values {lineNumber} , {methodName} , {className} or {threadName} , and you can also evaluate some code with the syntax {=xxx} . Just replace xxx with a variable name, or a method call, or whatever.

Answer 2

OK for me it's in Output > Glassfish server 3+ Console

I wrote a simply System.out.println in my program and when the debugger arrive on this instructions the console diplay the result of my simply writing.

For others situation I don't know