import java.awt.*; public class ExGui { private Frame f; private Button b1; private Button b2; public static void main(String args[]) { ExGui that = new ExGui(); that.go(); } public void go() { f = new Frame("GUI example"); f.setLayout(new FlowLayout()); // 设置布局管理器为FlowLayout b1 = new Button("Press Me"); // 按钮上显示字符"Press Me" b2 = new Button("Don't Press Me"); f.add(b1); f.add(b2); f.pack(); // 紧凑排列,其作用相当于setSize(),即让窗口尽量小,小到刚刚能够包容住b1、b2两个按钮 f.setVisible(true); } }