SE450: Assertions: Enabling and Disabling assertions [5/24]

To enable your source to contain assertions, compile your source as follows:

javac -source 1.4 MyClass.java

To enable assertions at runtime, you can do the following:

     java [ -enableassertions | -ea  ] [:<package name>"..." | :<class name> ]

The ... is used to enable assertions in the package. A single argument of ... enables assertions for the default package.

To disable asserations at runtime, you can do the following:

     java [ -disableassertions | -da ] [:<package name>"..." | :<class name> ]

Where the ... is used the same as above.

The -ea and -da flags can be used in combination to fine tune the classes that have assertions enabled.

To enable or disable assertions in the systems classes, use

java [ -enablesystemassertions | -esa ]

java [ -disablesystemassertions | -dsa ]

You can enable assertions in individual systems classes with the -ea and -da flags above, but with the no-arg form, system classes are not enabled by default.