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import java.awt.*; import java.awt.event.*; import javax.swing.*; public class test{ public static void main(String [] agur){ jisuan frame = new jisuan(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setResizable(false); frame.setVisible(true); } } class jisuan extends JFrame implements ActionListener{ private JMenuBar menubar = new JMenuBar(); private JMenu m1 = new JMenu("文件(field)"); private JMenu m2 = new JMenu("编辑e68a8462616964757a686964616f31333335323465(education)"); private JMenu m3 = new JMenu("帮助(help)"); private JMenuItem t1,t2,t3,t4,t5,t6,t7,t8; private JPanel j1,j2; private JButton b0,b1,b2,b3,b4,b5,b6,b7,b8,b9; private JButton kaigen,qiuyu,pingfang,zengxuan,yuxuan ,jiecheng,jia,jian,cheng,chu,dengyu; private Container contenPane = getContentPane(); private JTextField p1,p2; private JLabel j0; private double tem1 = 0; private double tem2 = 0; private double tem3 = 0; private int biaozhi=0; public jisuan(){ super.setTitle("简单计算器"); super.setSize(640,200); setJMenuBar(menubar); menubar.add(m1); menubar.add(m2); menubar.add(m3); t1 = new JMenuItem("打开"); t2 = new JMenuItem("全部清零"); t3 = new JMenuItem("打开圆周率"); t4 = new JMenuItem("退出"); m1.add(t1); m1.add(t2); m1.add(t3); m1.add(t4); t5 = new JMenuItem("简单的加减计算器"); t6 = new JMenuItem("画图"); t7 = new JMenuItem("写字本"); m2.add(t5); m2.add(t6); m2.add(t7); t8 = new JMenuItem("关于...."); m3.add(t8); j1 = new JPanel(); p1 = new JTextField(40); p1.setEditable(false); j0 = new JLabel("请输入要计算的数字："); // p2 = new JTextField("请输入计算的数字",10); // p3 = new JTextField("结果是",10); // p3.setEditable(false); j1.add(j0); j1.add(p1); // j1.add(p2); // j1.add(p3); j2 = new JPanel(); GridLayout f = new GridLayout(3,7); j2.setLayout(f); b0 = new JButton("0"); b1 = new JButton("1"); b2 = new JButton("2"); b3 = new JButton("3"); b4 = new JButton("4"); b5 = new JButton("5"); b6 = new JButton("6"); b7 = new JButton("7"); b8 = new JButton("8"); b9 = new JButton("9"); // j3 = new JPanel(); j2.add(b0); j2.add(b1); j2.add(b2); j2.add(b3); j2.add(b4); j2.add(b5); j2.add(b6); j2.add(b7); j2.add(b8); j2.add(b9); jia = new JButton("+"); jian = new JButton("-"); cheng = new JButton("*"); chu = new JButton("/"); kaigen = new JButton("立方根"); qiuyu = new JButton("平方根"); pingfang = new JButton("平方"); zengxuan = new JButton("sin"); yuxuan = new JButton("cos"); jiecheng = new JButton("阶乘"); dengyu = new JButton("="); j2.add(jia); j2.add(jian); j2.add(cheng); j2.add(chu); j2.add(kaigen); j2.add(qiuyu); j2.add(pingfang); j2.add(zengxuan); j2.add(yuxuan); j2.add(jiecheng); j2.add(dengyu); contenPane.add(j2,BorderLayout.CENTER); contenPane.add(j1,BorderLayout.NORTH); b0.addActionListener(this); b1.addActionListener(this); b2.addActionListener(this); b3.addActionListener(this); b4.addActionListener(this); b5.addActionListener(this); b6.addActionListener(this); b7.addActionListener(this); b8.addActionListener(this); b9.addActionListener(this); jia.addActionListener(this); jian.addActionListener(this); cheng.addActionListener(this); chu.addActionListener(this); kaigen.addActionListener(this); qiuyu.addActionListener(this); pingfang.addActionListener(this); zengxuan.addActionListener(this); yuxuan.addActionListener(this); jiecheng.addActionListener(this); dengyu.addActionListener(this); t2.addActionListener(this); t3.addActionListener(this); t4.addActionListener(this); t7.addActionListener(this); t8.addActionListener(this); } public void actionPerformed(ActionEvent e){ if(e.getSource()==b0){ p1.setText("0"); j1.add(p1); tem1 = 0; } else if(e.getSource() == b1){ p1.setText("1"); j1.add(p1); tem1 = 1; } else if(e.getSource() == b2){ p1.setText("2"); j1.add(p1); tem1 = 2; } else if(e.getSource() == b3){ p1.setText("3"); j1.add(p1); tem1 = 3; } else if(e.getSource() == b4){ p1.setText("4"); j1.add(p1); tem1 = 4; } else if(e.getSource() == b5){ p1.setText("5"); j1.add(p1); tem1 = 5; } else if(e.getSource() == b6){ p1.setText("6"); j1.add(p1); tem1 = 6; } else if(e.getSource() == b7){ p1.setText("7"); j1.add(p1); tem1 = 7; } else if(e.getSource() == b8){ p1.setText("8"); j1.add(p1); tem1 = 8; } else if(e.getSource() == b9){ p1.setText("9"); j1.add(p1); tem1 = 9; } if(e.getSource()==jia){ p1.setText(tem1+"+"); j1.add(p1); tem2 = tem1; biaozhi = 0; } if(e.getSource()==jian){ p1.setText(tem1+"-"); j1.add(p1); tem2 = tem1; biaozhi = 1; } if(e.getSource()==cheng){ p1.setText(tem1+"*"); j1.add(p1); tem2 = tem1; biaozhi = 2; } if(e.getSource()==chu){ p1.setText(tem1+"/"); j1.add(p1); tem2 = tem1; biaozhi = 3; } if(e.getSource()==kaigen){ p1.setText(tem1+"立方根"); j1.add(p1); tem2 = tem1; biaozhi = 4; } if(e.getSource()==qiuyu){ p1.setText(tem1+"平方根"); j1.add(p1); tem2 = tem1; biaozhi = 5; } if(e.getSource()==pingfang){ p1.setText(tem1+"平方"); j1.add(p1); tem2 = tem1; biaozhi = 6; } if(e.getSource()==zengxuan){ p1.setText(tem1+"sina"); j1.add(p1); tem2 = tem1; biaozhi = 7; } if(e.getSource()==yuxuan){ p1.setText(tem1+"cosa"); j1.add(p1); tem2 = tem1; biaozhi = 8; } if(e.getSource()==jiecheng){ p1.setText(tem1+"!"); j1.add(p1); tem2 = tem1; biaozhi = 9; } if(e.getSource()==dengyu){ if(biaozhi ==0){tem3 = tem2+tem1;} if(biaozhi ==1){tem3 = tem2-tem1;} if(biaozhi ==2){tem3 = tem2*tem1;} if(biaozhi ==3){tem3 = tem2/tem1;} if(biaozhi ==4){tem3 = Math.cbrt(tem1);} if(biaozhi ==5){tem3 =Math.sqrt(tem1);} if(biaozhi ==6){tem3 = tem1*tem1;} if(biaozhi ==7){tem3 = Math.sin(tem1);} if(biaozhi ==8){tem3 = Math.cos(tem1);} if(biaozhi ==9){tem3 = jisuanjiecheng(tem1);} p1.setText("="+tem3); j1.add(p1); } else if(e.getSource()==t2){ p1.setText("0.0"); j1.add(p1); } else if(e.getSource()==t3){ p1.setText(Math.PI+""); j1.add(p1); } else if(e.getSource()==t4){ System.exit(0); } else if(e.getSource()==t5){ repaint(); this.jiandanjisuan(); } else if(e.getSource()==t8){ System.out.println("这是一个简单的GUI应用程序"); } else if(e.getSource()==t7){ repaint(); new jishiben(contenPane); } } private double jisuanjiecheng(double a){ if(a==1) return 1; else return (jisuanjiecheng(a-1)*a); } public void jiandanjisuan(){ p1 = new JTextField(20); p2 = new JTextField(20); j0 = new JLabel("输入你要计算的数字"); j1 = new JPanel(); j1.add(j0); j1.add(p1); j1.add(p2); j2 = new JPanel(); jia = new JButton("+"); jian = new JButton("-"); cheng = new JButton("*"); chu = new JButton("/"); j2.add(jia); j2.add(jian); j2.add(cheng); j2.add(chu); contenPane.add(j2,BorderLayout.CENTER); contenPane.add(j1,BorderLayout.NORTH); } } class jishiben extends jisuan { private Container contenPane1 = getContentPane(); private JTextArea text = new JTextArea(); private JButton baobutton,tuibutton; private JLabel l; private JPanel ji1,ji2,ji3; public jishiben(Container cont ){ this.contenPane1 = cont; ji1 = new JPanel(); ji2 = new JPanel(); ji3 = new JPanel(); l = new JLabel("请输入你要记录的文字"); baobutton = new JButton("保存为"); tuibutton = new JButton("退出"); ji1.add(l); ji2.add(text); ji3.add(baobutton); ji3.add(tuibutton); contenPane1.add(ji2,BorderLayout.CENTER); contenPane1.add(ji1,BorderLayout.NORTH); contenPane1.add(ji3,BorderLayout.SOUTH); } }

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