question: @ Override public void assertOperationSupported ( Component target , int numBuffers , BufferCapabilities caps ) throws AWTException { if ( numBuffers < 2 || numBuffers > 4 ) { throw new AWTException ( "Only 2-4 buffers supported" ) ; } if ( caps . getFlipContents ( ) == BufferCapabilities . FlipContents . COPIED && numBuffers != 2 ) { throw new AWTException ( "FlipContents.COPIED is only" + "supported for 2 buffers" ) ; } }
target:  Checks that the requested configuration is natively supported; if not, an AWTException is thrown.