Java -version

java version "1.4.2-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-beta-b06)
Java HotSpot(TM) Client VM (build 1.4.2-beta-b06, mixed mode)


Try to set a display mode which is not available in the system it should throw IllegalArguementException(according to API doc).Instead,it throws an AWT Error which is as follows

Exception in thread "main" java.lang.InternalError: Could not set display mode
 at sun.awt.Win32GraphicsDevice.configDisplayMode(Native Method)
 at sun.awt.Win32GraphicsDevice.setDisplayMode(Win32GraphicsDevice.java:300)
 at Test1.main(Test1.java:20)

Please try running the attached program "Test1.java".

Similarly ,if we Try to set a "null"display mode,it should throw IllegalArguementException.Instead,it throws Null Pointer Exception which is as follows:

java.lang.NullPointerException
at sun.awt.Win32GraphicsDevice.isDisplayModeAvailable(Win32GraphicsDevice.java:345)
at sun.awt.Win32GraphicsDevice.setDisplayMode(Win32GraphicsDevice.java:296)
at Test.main(Test.java:20)

Please try running the attached program "Test.java".