How to enable assert

You need to use the vm parameter -ea (or -enableassertions)

Add it to the VM Parameters box of the run/debug section of the project
properties. This will cause an exception to be thrown when the assertion
fails.

N.


Ted Hill wrote:

Hello,

>

I have a project targeting 1.4.1, I checked the Project Properties box
"Enable 'assert' keyword and then restarted IntelliJ.

>

I then wrote a test program (see below) that has the following line
in it:

>

assert(false) : "This should fail";

>

I ran this via IntelliJ both in 'release' and in 'debug' mode. I was
expecting to see a message in the IntelliJ output window telling me
that the assetion had failed. I did not see any such message in
either release or debug mode.

>

Is there something else that I need to do to enable assert other than
simply checking the check box and restarting IntelliJ?

>

Thanks,

>

Ted Hill

>
>

public class AssertionTestFrame extends JPanel
{

>

public AssertionTestFrame()
{
System.out.println("AssertionTestFrame.AssertionTestFrame");
assert(false) : "This should fail";
}

>

public static void main(String[ ] args)
{
JFrame frame = new JFrame("AssertionTestFrame");

>

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

>

frame.getContentPane( ).add(new AssertionTestFrame( ),
BorderLayout.CENTER);
frame.setSize(400, 200);
frame.setVisible(true);
}
}

Is there something else that I need to do to enable assert other than

simply

checking the check box and restarting IntelliJ?

Did you add the -Dea (and -Desa id you want) to the command line of the run
entry? The running jvm has assertions disabled by default.

I know this is a very old post, but I came across it, so maybe others will too.

I used the Run Configurations to add the "-ea" to my VM options, but to even see VM options I had to click "Modify Options" and then check "Add VM Options".

@ksnortum-This was very helpful for me. Thank you so much for mentioning it.