JAVA复习题继承

}

public MyFrame() { }

public static void main(String[] args) { }

MyFrame myFrame = new MyFrame(); myFrame.setTitle(\

myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); myFrame.setSize(200,200); myFrame.setVisible(true);

Container container = this.getContentPane(); container.setLayout(new BorderLayout());

container.add(new Button(\ container.add(new Button(\