jisuanqi.rar_java applet jisuanqi

import java.awt.*; import java.awt.event.*; import java.applet.*; public class calculateApplet extends Applet implements ActionListener { public TextField tf1,tf2,tf3; Button b_deng; Choice fuHao; Panel pp,pp1,pp2; double a,b,c; String cc; AudioClip music; Image ima; public void init() {try{ this.setBackground(Color.LIGHT_GRAY); this.setLayout(new BorderLayout()); tf1=new TextField(20); tf2=new TextField(8); tf3=new TextField(8); b_deng=new Button("="); b_deng.addActionListener(this); fuHao=new Choice(); fuHao.addItem("+"); fuHao.addItem("-"); fuHao.addItem("*"); fuHao.addItem("/"); pp=new Panel(null); pp1=new Panel(new FlowLayout()); pp2=new Panel(new FlowLayout()); pp1.setBackground(Color.yellow); pp2.setBackground(Color.yellow); pp1.add(new Label("计算结果:")); pp1.add(tf1); pp2.add(tf2); pp2.add(fuHao); pp2.add(tf3); pp2.add(b_deng); pp.add(pp1); pp.add(pp2); // pp.setBackground(Color.red); pp1.setBounds(10,10,300,40); pp2.setBounds(10,60,300,40); this.add(pp); music=getAudioClip(getDocumentBase(),"voice/挥着翅膀的女孩-容祖儿.wav"); music.loop(); ima=getImage(getDocumentBase(),"00.jpg"); repaint(); this.setVisible(true);}catch(Exception eee){System.out.print(eee);} } public void update(Graphics g) { paint(g); } public void paint(Graphics g) { g.drawImage(ima,0,0,this); } public void actionPerformed(ActionEvent e) { try { a=Double.parseDouble(tf2.getText()); b=Double.parseDouble(tf3.getText()); if(fuHao.getSelectedItem().equals("+")) { c=a+b; cc=new String(Double.toString(c)); tf1.setText(cc); } if(fuHao.getSelectedItem().equals("-")) { c=a-b; cc=new String(Double.toString(c)); tf1.setText(cc); } if(fuHao.getSelectedItem().equals("*")) { c=a*b; cc=new String(Double.toString(c)); tf1.setText(cc); } if(fuHao.getSelectedItem().equals("/")) { c=a/b; cc=new String(Double.toString(c)); tf1.setText(cc); } } catch(Exception ee){} } }