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

How can I enable the assert keyword in Eclipse?

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

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.