How to enable the Java keyword assert in Eclipse program-wise?

问题

How can I enable the assert keyword in Eclipse?

public class A
{
    public static void main(String ... args)
    {
        System.out.println(1);
        assert false;
        System.out.println(2);
    }
}

回答1:

To be specific:

Go to Run->run configuration
select java application in left nav pan.
right click and select New.
select Arguments tab
Add -ea in VM arguments.

回答2:

If anyone wants to enable assertions by default (in contrast to enabling them for just a single run configuration), it is possible with the following steps:

Window (menu bar)
Preferences
Java
Installed JREs
Select your JRE/JDK
Press Edit...
Default VM arguments
Add -ea

回答3:

Form the menu bar, select Run -> Run Configurations....
Select Arguments tab.
Add -ea to VM arguments.
Click Apply.
Click Run.

回答4:

Java introduced the assert keyword, so the way to enable source-level support is to make sure that Eclipse's Java compliance level is 1.4 or higher. (The chances are that the compliance level is already higher than that ...)

To cause a Java application launched from Eclipsed to run with assertion checking enabled, add the "-ea" argument to the VM arguments in the launcher configuration's "Arguments" tab.

回答5:

You need to go to run configurations and add vm arguments as "-enableassertions" (or) "-ea"

After that when you run code with assert statement, you will see assert in action.

回答6:

In case someone uses IDEA, -ea is enabled by default in some IDEA versions, but disabled in others. To manually configure it, it is under run -> edit configuration -> vm option

来源：https://stackoverflow.com/questions/11415160/how-to-enable-the-java-keyword-assert-in-eclipse-program-wise

标签

java

eclipse

assert

assertions