Java大学实用教程(第2版)书中 例子 程序源代码.docVIP

Hello.java class A { void f() { System.out.println(I am A); } } class B { } public class Hello { public static void main (String args[ ]) { System.out.println(你好，很高兴学习Java); A a=new A(); a.f(); } } Tom.java public class Tom{ int leg; String head; void cry(String s){ System.out.println(s); } } class Example{ public static void main(String args[]) { Tom cat; cat=new Tom(); cat.leg=4; cat.head=猫头; System.out.println(腿:+cat.leg+条); System.out.println(头:+cat.head); cat.cry(我今天要和Jerry拼了); } } Ch10 import javax.swing.*; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; public class Example10_1{ public static void main(String args[]){ FirstWindow win=new FirstWindow(一个简单的窗口); } } class FirstWindow extends JFrame{ JMenuBar menubar; JMenu menu; JMenuItem item1,item2; FirstWindow(String s){ setTitle(s); setSize(160,170); setLocation(120,120); setVisible(true); menubar=new JMenuBar(); menu=new JMenu(文件); item1=new JMenuItem(打开,new ImageIcon(open.gif)); item2=new JMenuItem(保存,new ImageIcon(save.gif)); item1.setAccelerator(KeyStroke.getKeyStroke(O)); item2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK)); menu.add(item1); menu.addSeparator(); menu.add(item2); menubar.add(menu); setJMenuBar(menubar); validate(); setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); } } 完全版：