13-GUI实例-我的相册.pptVIP

GUI实例-我的相册 Java实例—我的相册 Java实例—代码 import java.awt.*; import java.awt.event.*; public class mypicture extends Frame{ static Button but1,but2,but3; mypicture( ){ setBackground(Color.CYAN); setSize(400,280); setVisible(true); setLayout(null); canvas1 cvs=new canvas1(); 　//cvs为画布 add(cvs); cvs.setBounds(0,20,300,230); Java实例—代码 but1=new Button(下一页); but2=new Button(上一页); but3=new Button(退出); add(but1); add(but2); add(but3); but1.setBounds(320,60,60,30); but2.setBounds(320,120,60,30); but3.setBounds(320,180,60,30); but1.addActionListener(cvs); but2.addActionListener(cvs); but3.addActionListener(cvs); addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e){ System.exit(0); } }); } Java实例—代码 public static void main(String[] args) { mypicture frm=new mypicture } } class canvas1 extends Canvas implements ActionListener{ Image[] img; int pg=0; canvas1() { img=new Image[6]; Toolkit t1=getToolkit(); //获得Toolkit类的一个实例. 该对象代表着你的计算机上运行的环境，包含了所有与Java相关的环境属性和功能。  Java实例—代码 for(int i=0;i=5;i++){ img[i]=t1.getImage(0+i+.jpg); } } public void actionPerformed(ActionEvent e){ if(e.getSource()==mypicture.but1){ pg++; if(pg5)pg=0; repaint(); } if(e.getSource()==mypicture.but2){ pg--; if(pg=0)pg=5; repaint(); } if(e.getSource()==mypicture.but3){ System.exit(0); } } public void paint(Graphics g){ 　　//paint()方法自动调用 g.drawImage(img[pg],30,30,300,225,this); } } * *