java设计计算器源代码

1、 16/16java设计计算器源代码 import javax.swing.*; importstatic javax.swing.JFrame.*; /引入JFrame的静态常量 import java.awt.event.*; import java.awt.*; enum Oper加,减,乘,除,取反,开方,百分号,倒数,对数,正弦,余弦,取余,平方 class MyExtendsJFrame extends JFrame implements ActionListener,KeyListener JTextField text;/创建文本框对象 JButton button1, but

2、ton2,button3; JButton button_number1,button_number2,button_number3,button_number4,button_nu mber5,button_number6,button_number7,button_number8,button_number9,but ton_number0,button_number10; JButton button_add,button_equ,button_sub,button_mul,button_div,button_per,but ton_pec,button_sqrt,button_not,

3、button_log,button_cos,button_sin,butto n_mod,button_squ; JMenuBar menubar; JMenu menu1,menu2,menu3; JMenuItem menuitem1,menuitem2,menuitem3,menuitem4,menuitem5,menuitem6,menuitem7 ; double CurrentNumber; Oper oper; boolean A=false; publicvoid keyPressed(KeyEvent e) publicvoid keyReleased (KeyEvent e

4、) if(e.getKeyCode()!=KeyEvent.VK_0 text.setText(); for (int i = 0; i s.length() - 1; i+) char a = s.charAt(i); text.setText(text.getText() + a); publicvoid keyTyped(KeyEvent e) public MyExtendsJFrame() setTitle(计算器); setBounds(160,100,315,455); setLayout(null); init(); /添加控件的操作封装成一个函数 setVisible(tru

5、e);/放在添加组件后面执行 setDefaultCloseOperation(EXIT_ON_CLOSE); void init()/添加的控件 text=new JTextField(20); text.setBounds(20,10,260,50);/设置大小和位置 add(text);/添加到窗口 / 当点击按钮+、-、*、/时，com = true text.addKeyListener(this); menubar=new JMenuBar(); setJMenuBar(menubar); menu1=new JMenu(查看(E); menu1.setFont(new Font(

6、粗体,Font.PLAIN,12); menu2=new JMenu(编辑(v); menu2.setFont(new Font(粗体,Font.PLAIN,12); menu3=new JMenu(帮助); menu3.setFont(new Font(粗体,Font.PLAIN,12); menubar.add(menu1);menubar.add(menu2);menubar.add(menu3); menuitem1=new JMenuItem(标准型(T); menuitem2=new JMenuItem(科学型(S); menuitem3=new JMenuItem(数学分组(L)

7、; menuitem1.setFont(new Font(粗体,Font.PLAIN,12); menuitem2.setFont(new Font(粗体,Font.PLAIN,12); menuitem3.setFont(new Font(粗体,Font.PLAIN,12); menu1.add(menuitem1);menu1.add(menuitem2);menu1.addSeparator();me nu1.add(menuitem3); menuitem4=new JMenuItem(复制(c) Ctrl+c); menuitem5=new JMenuItem(粘贴(v) Ctrl+

8、v); menuitem4.setFont(new Font(粗体,Font.PLAIN,12); menuitem5.setFont(new Font(粗体,Font.PLAIN,12); menu2.add(menuitem4);menu2.add(menuitem5); menuitem6=new JMenuItem(查看帮助(H); menuitem7=new JMenuItem(关于计算器(A); menuitem6.setFont(new Font(粗体,Font.PLAIN,12); menuitem7.setFont(new Font(粗体,Font.PLAIN,12); me

9、nu3.add(menuitem6);menu3.addSeparator(); menu3.add(menuitem7); button1=new JButton(); button1.setBounds(20,70,52,52); add(button1); button1.addActionListener(this); button2=new JButton(CE); button2.setBounds(72,70,52,52); add(button2); button2.addActionListener(this); button3=new JButton(C); button3

10、.setBounds(124,70,52,52); add(button3); button3.addActionListener(this); button_number1=new JButton(1); button_number1.setBounds(20,278,52,52); add(button_number1); button_number1.addActionListener(this);/添加关联 button_number2=new JButton(2); button_number2.setBounds(72,278,52,52); add(button_number2)

11、; button_number2.addActionListener(this);/添加关联 button_number3=new JButton(3); button_number3.setBounds(124,278,52,52); add(button_number3); button_number3.addActionListener(this);/添加关联 button_number4=new JButton(4); button_number4.setBounds(20,226,52,52); add(button_number4); button_number4.addActio

12、nListener(this);/添加关联 button_number5=new JButton(5); button_number5.setBounds(72,226,52,52); add(button_number5); button_number5.addActionListener(this);/添加关联 button_number6=new JButton(6); button_number6.setBounds(124,226,52,52); add(button_number6); button_number6.addActionListener(this);/添加关联 but

13、ton_number7=new JButton(7); button_number7.setBounds(20,174,52,52); add(button_number7); button_number7.addActionListener(this);/添加关联 button_number8=new JButton(8); button_number8.setBounds(72,174,52,52); add(button_number8); button_number8.addActionListener(this);/添加关联 button_number9=new JButton(9)

14、; button_number9.setBounds(124,174,52,52); add(button_number9); button_number9.addActionListener(this);/添加关联 button_number0=new JButton(0); button_number0.setBounds(20,330,104,52); add(button_number0); button_number0.addActionListener(this);/添加关联 button_number10=new JButton(.); button_number10.setBo

15、unds(124,330,52,52); add(button_number10); button_number10.addActionListener(this);/添加关联 button_equ=new JButton(=); button_equ.setBounds(228,278,52,104); add(button_equ); button_equ.addActionListener(this);/添加关联 button_add=new JButton(+); button_add.setBounds(176,330,52,52); add(button_add); button_

16、add.addActionListener(this);/添加关联 button_sub=new JButton(-); button_sub.setBounds(176,278,52,52); button_sub.addActionListener(this); button_mul=new JButton(*); button_mul.setBounds(176,226,52,52); add(button_mul); button_mul.addActionListener(this); button_div=new JButton(/); button_div.setBounds(1

17、76,174,52,52); add(button_div); button_div.addActionListener(this); button_sqrt=new JButton(); button_sqrt.setBounds(228,70,52,52); add(button_sqrt); button_sqrt.addActionListener(this); button_not=new JButton(-+); button_not.setBounds(176,70,52,52); add(button_not); button_not.addActionListener(thi

18、s); button_per=new JButton(%); button_per.setBounds(228,174,52,52); add(button_per); button_per.addActionListener(this); button_pec=new JButton(1/x); button_pec.setBounds(228,226,52,52); add(button_pec); button_pec.addActionListener(this); button_log=new JButton(log); button_log.setBounds(20,122,52,

19、52); add(button_log); button_log.addActionListener(this); button_cos=new JButton(cos); button_cos.setBounds(72,122,52,52); add(button_cos); button_cos.addActionListener(this); button_sin=new JButton(sin); button_sin.setBounds(124,122,52,52); button_sin.addActionListener(this); button_mod=new JButton

20、(mod); button_mod.setBounds(176,122,52,52); add(button_mod); button_mod.addActionListener(this); button_squ=new JButton(x2); button_squ.setBounds(228,122,52,52); add(button_squ); button_squ.addActionListener(this); button_number1.setBackground(new Color(176,196,222);button_number1.setFont(new Font(宋

21、体,0,25);button_number1.setForeground(Color.white); button_number2.setBackground(new Color(176,196,222);button_number2.setFont(new Font(宋体,0,25);button_number2.setForeground(Color.white); button_number3.setBackground(new Color(176,196,222);button_number3.setFont(new Font(宋体,0,25);button_number3.setFo

22、reground(Color.white); button_number4.setBackground(new Color(176,196,222);button_number4.setFont(new Font(宋体,0,25);button_number4.setForeground(Color.white); button_number5.setBackground(new Color(176,196,222);button_number5.setFont(new Font(宋体,0,25);button_number5.setForeground(Color.white); butto

23、n_number6.setBackground(new Color(176,196,222);button_number6.setFont(new Font(宋体,0,25);button_number6.setForeground(Color.white); button_number7.setBackground(new Color(176,196,222);button_number7.setFont(new Font(宋体,0,25);button_number7.setForeground(Color.white); button_number8.setBackground(new

24、Color(176,196,222);button_number8.setFont(new Font(宋体,0,25);button_number8.setForeground(Color.white); button_number9.setBackground(new Color(176,196,222);button_number9.setFont(new Font(宋体,0,25);button_number9.setForeground(Color.white); button_number0.setBackground(new Color(176,196,222);button_nu

25、mber0.setFont(new Font(宋体,0,25);button_number0.setForeground(Color.white); button_number10.setBackground(new Color(176,196,222);button_number10.setFont(new Font(宋体 ,0,25);button_number10.setForeground(Color.white); button1.setBackground(new Color(119,136,153);button1.setFont(new Font(宋体,0,18);button

26、1.setForeground(Color.white); button2.setBackground(new Color(119,136,153);button2.setFont(new Font(宋体,0,18);button2.setForeground(Color.white); button3.setBackground(new Color(119,136,153);button3.setFont(new Font(宋体,0,18);button3.setForeground(Color.white); button_add.setBackground(new Color(119,1

27、36,153);button_add.setFont(new Font(宋体 ,0,18);button_add.setForeground(Color.white); button_equ.setBackground(new Color(119,136,153);button_equ.setFont(new Font(宋体 ,0,18);button_equ.setForeground(Color.white); button_sub.setBackground(new Color(119,136,153);button_sub.setFont(new Font(宋体 ,0,18);butt

28、on_sub.setForeground(Color.white); button_mul.setBackground(new Color(119,136,153);button_mul.setFont(new Font(宋体 ,0,18);button_mul.setForeground(Color.white); button_div.setBackground(new Color(119,136,153);button_div.setFont(new Font(宋体 ,0,18);button_div.setForeground(Color.white); button_per.setB

29、ackground(new Color(119,136,153);button_per.setFont(new Font(宋体 ,0,18);button_per.setForeground(Color.white); button_pec.setBackground(new Color(119,136,153);button_pec.setFont(new Font(宋体 ,0,12);button_pec.setForeground(Color.white); button_sqrt.setBackground(new Color(119,136,153);button_sqrt.setF

30、ont(new Font(宋体 ,0,18);button_sqrt.setForeground(Color.white); button_not.setBackground(new Color(119,136,153);button_not.setFont(new Font(宋体 ,0,18);button_not.setForeground(Color.white); button_log.setBackground(new Color(119,136,153);button_log.setFont(new Font(宋体 ,0,12);button_log.setForeground(C

31、olor.white); button_cos.setBackground(new Color(119,136,153);button_cos.setFont(new Font(宋体 ,0,12);button_cos.setForeground(Color.white); button_sin.setBackground(new Color(119,136,153);button_sin.setFont(new Font(宋体 ,0,12);button_sin.setForeground(Color.white); button_mod.setBackground(new Color(11

32、9,136,153);button_mod.setFont(new Font(宋体 ,0,12);button_mod.setForeground(Color.white); button_squ.setBackground(new Color(119,136,153);button_squ.setFont(new Font(宋体,0,12);button_squ.setForeground(Color.white); class testException extends Exception String message; testException() message =除数等于0; pu

33、blic String getMessage() return message; class testException2extends Exception String message; testException2() message =被开方数小于0; public String getMessage() return message; class testException3extends Exception String message; testException3() message =对数小于等于0; public String getMessage() return mess

34、age; class testf void f(double i) throws testException if(i=0) thrownew testException(); class testf2 void f2(double i) throws testException2 if(i0) thrownew testException2(); class testf3 void f3(double i) throws testException3 if(i=0) thrownew testException3(); publicvoid actionPerformed(ActionEve

35、nt e) if(e.getSource()=button_number1) if(A) text.setText(1); A=false; else if(text.getText().equals(0) text.setText(1); else text.setText(text.getText()+1); if(e.getSource()=button_number2) if(A) text.setText(2); A=false; else if(text.getText().equals(0) text.setText(2); else text.setText(text.getT

36、ext()+2); if(e.getSource()=button_number3) if(A) text.setText(3); A=false; else if(text.getText().equals(0) text.setText(3); else text.setText(text.getText()+3); if(e.getSource()=button_number4) if(A) text.setText(4); A=false; else if(text.getText().equals(0) text.setText(4); else text.setText(text.

37、getText()+4); if(e.getSource()=button_number5) if(A) text.setText(5); A=false; else if(text.getText().equals(0) text.setText(5); else text.setText(text.getText()+5); if(e.getSource()=button_number6) if(A) text.setText(6); A=false; else if(text.getText().equals(0) text.setText(6); else text.setText(t

38、ext.getText()+6); if(e.getSource()=button_number7) if(A) text.setText(7); A=false; else if(text.getText().equals(0) text.setText(7); else text.setText(text.getText()+7); if(e.getSource()=button_number8) if(A) text.setText(8); A=false; else if(text.getText().equals(0) text.setText(8); else text.setTe

39、xt(text.getText()+8); if(e.getSource()=button_number9) if(A) text.setText(9); A=false; else if(text.getText().equals(0) text.setText(9); else text.setText(text.getText()+9); if(e.getSource()=button_number0) if(A) text.setText(0); A=false; else if (text.getText().equals(0) A=false; else text.setText(

40、text.getText()+0); if(e.getSource()=button_number10) if(A) text.setText(0.); A=false; else if (text.getText().indexOf(.) != -1) else if (text.getText().equals() text.setText(0.); A=false; else text.setText(text.getText()+.); if(e.getSource()=button1) String s = text.getText(); text.setText(); for (i

41、nt i = 0; i s.length() - 1; i+) char a = s.charAt(i); text.setText(text.getText() + a); if(e.getSource()=button2) text.setText(); if(e.getSource()=button3) text.setText(); if(e.getSource()=button_add) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.加; text.setText(); if(e.getSource()=butt

42、on_sub) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.减; text.setText(); if(e.getSource()=button_mul) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.乘; text.setText(); if(e.getSource()=button_div) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.除; text.setText();

43、if(e.getSource()=button_per) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.百分号; text.setText(); if(e.getSource()=button_pec) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.倒数; text.setText(); if(e.getSource()=button_sqrt) CurrentNumber=Double.parseDouble(text.getText(); oper

44、=Oper.开方; text.setText(); if(e.getSource()=button_not) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.取反; text.setText(); if(e.getSource()=button_log) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.对数; text.setText(); if(e.getSource()=button_sin) CurrentNumber=Double.parseDou

45、ble(text.getText(); oper=Oper.正弦; text.setText(); if(e.getSource()=button_cos) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.余弦; text.setText(); if(e.getSource()=button_mod) CurrentNumber=Double.parseDouble(text.getText(); oper=Oper.取余; text.setText(); if(e.getSource()=button_squ) Curre

46、ntNumber=Double.parseDouble(text.getText(); oper=Oper.平方; text.setText(); if(e.getSource()=button_equ) A=true; switch(oper) case加: double number1=Double.parseDouble(text.getText()+CurrentNumber; text.setText(String.valueOf(number1); break; case减: double number2=CurrentNumber-Double.parseDouble(text.

47、getText(); text.setText(String.valueOf(number2); break; case乘: double number3=Double.parseDouble(text.getText()*CurrentNumber; text.setText(String.valueOf(number3); break; case除: if(Double.parseDouble(text.getText()=0) testf t=new testf(); try t.f(Double.parseDouble(text.getText(); catch(testException e1) System.out.println(e1.getMessage(); text.setText(e1.getMessa