Enables assertions by default (except system classes).
-ea
Enables assertions for a given class name.
-ea:
Enables assertions for all members in a given package name.
-ea:
Short for -enablesystemsassertions; enables assertions in system classes. This is rarely used.
-esa
Disables assertions by default(except for systems classes).
-da
Disables assertions for a given class name.
-da:
Disables assertions in all members of the given package name.
-da:
Short for -disablesystemsassertions; disables assertions in the system classes. This is rarely used.
-dsa
Compile code for an older version of java that uses assert as an identifier.
-source 1.3