A. void windowClosed(WindowEvent); B. void windowClosing(WindowEvent); C. void windowIconified(WindowEvent); D. void windowDeactivated(WindowEvent);
A. write() B. flush() C. connect() D. print()
A. void keyTyped(KeyEvent); B. void keyReleased(KeyEvent); C. void keyPressed(KeyEvent); D. void keyUpDown(KeyEvent);
A. readInt B. readChar C. skipBytes D. readDouble
A. if (new File("score.txt").exists()) B. if (File.exists("score.txt")) C. if (File.exists("score.txt") == 1) D. if (exists("score.txt") == 1)
A. 定义作为此对话框的Component B. 定义Message的样式 C. 定义显示的对话框类型 D. 定义对话框中所显示的描述消息
A. 事件 B. 事件源 C. 事件处理者 D. 事件保护
ActionEvent ButtonEvent C. FocusEvent D. MouseEvent
A. GZipOutputStream B. ZipOutputStream C. JarOutputStream D. RarOutputStream
A. 对象串行化时要使用Serializable接口 B. 对象串行化时会将类的静态变量一同串行化 C. 串行化对象可以把一个对象转换成字节流 D. 串行化对象可以把字节流反串行化为原始对象的拷贝