java.awt.* awt: http://www.cnblogs.com/forstudy/archive/2012/04/19/2439488.html javax.swing.* swing: http://wenku.baidu.com/link?url=nVK_I4m97j8f6YTk4HMIyEcVvpWn4zGhQ8o4JYULxe220a8WafNbGlqrvKAakvtjQCOamdBpnf4I6PPvIW6eT0Ikp_bfsOd0SNfFehj58DS