整理版简易型科学计算器.docx

1、整理版简易型科学计算器简易型科学计算器import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;import ;public class myCalucator extends JFrame private JPanel panel1,panel2,panel3,panel4; private JTextField tf; private JMenu menu1,menu2; pri

2、vate JMenuItem seeItem1,seeItem2,help1,help2; private JMenuBar myBar; private JButton Backspace,CE,C,sin,ercifang,cos,sancifang,tan,jiecheng,lg,pai, zero,one,two,three,four,five,six,seven,eight,nine,jia,jian,cheng,chu,dot,equal; String s; int x; double num1,num2,num3; public myCalucator() super(简易型科

3、学计算器); this.setLayout(new BorderLayout(10,5); panel1=new JPanel(new GridLayout(1,3,10,10); panel2=new JPanel(new GridLayout(4,2,5,5); panel3=new JPanel(new GridLayout(4,4,5,5); panel4=new JPanel(new BorderLayout(5,5); /* * 菜单栏 */ myBar=new JMenuBar(); menu1=new JMenu(查看); menu2=new JMenu(帮助); menu1.

4、setFont(new Font(宋体,Font.PLAIN,12); menu2.setFont(new Font(宋体,Font.PLAIN,12); /* * 查看栏 */ seeItem1=new JMenuItem(标准型); seeItem2=new JMenuItem(科学型); seeItem1.setFont(new Font(宋体,Font.PLAIN,12); seeItem2.setFont(new Font(宋体,Font.PLAIN,12); /* * 帮助栏 */ help1=new JMenuItem(查看帮助); help2=new JMenuItem(关于计

5、算器); help1.setFont(new Font(宋体,Font.PLAIN,12); help2.setFont(new Font(宋体,Font.PLAIN,12); menu1.add(seeItem1); menu1.add(seeItem2); menu2.add(help1); menu2.add(help1); myBar.add(menu1); myBar.add(menu2); this.setJMenuBar(myBar); /* * 文本域 */ tf=new JTextField(); tf.setEditable(false); tf.setBackground

6、(Color.white); tf.setText(); tf.setHorizontalAlignment(JTextField.RIGHT); tf.setBorder(BorderFactory.createLoweredBevelBorder(); init();/对计算器进行初始化public void init() Backspace=new JButton(); Backspace.setForeground(Color.blue); CE=new JButton(CE); CE.setForeground(Color.blue); C=new JButton(C); C.set

7、Foreground(Color.blue); panel1.add(Backspace); panel1.add(CE); panel1.add(C); sin=new JButton(sin); sin.setForeground(Color.red); ercifang=new JButton(x2); ercifang.setForeground(Color.red); cos=new JButton(cos); cos.setForeground(Color.red); sancifang=new JButton(x3); sancifang.setForeground(Color.

8、red); tan=new JButton(tan); tan.setForeground(Color.red); jiecheng=new JButton(n!); jiecheng.setForeground(Color.red); lg=new JButton(lg); lg.setForeground(Color.red); pai=new JButton(); pai.setForeground(Color.red); panel2.add(sin); panel2.add(ercifang); panel2.add(cos); panel2.add(sancifang); pane

9、l2.add(tan); panel2.add(jiecheng); panel2.add(lg); panel2.add(pai); seven=new JButton(7); seven.setForeground(Color.blue); eight=new JButton(8); eight.setForeground(Color.blue); nine=new JButton(9); nine.setForeground(Color.blue); jia=new JButton(+); jia.setForeground(Color.blue); four=new JButton(4

10、); four.setForeground(Color.blue); five=new JButton(5); five.setForeground(Color.blue); six=new JButton(6); six.setForeground(Color.blue); jian=new JButton(-); jian.setForeground(Color.blue); one=new JButton(1); one.setForeground(Color.blue); two=new JButton(2); two.setForeground(Color.blue); three=

11、new JButton(3); three.setForeground(Color.blue); cheng=new JButton(*); cheng.setForeground(Color.blue); zero=new JButton(0); zero.setForeground(Color.blue); dot=new JButton(.); dot.setForeground(Color.blue); equal=new JButton(=); equal.setForeground(Color.blue); chu=new JButton(/); chu.setForeground

12、(Color.blue); panel3.add(seven); panel3.add(eight); panel3.add(nine); panel3.add(jia); panel3.add(four); panel3.add(five); panel3.add(six); panel3.add(jian); panel3.add(one); panel3.add(two); panel3.add(three); panel3.add(cheng); panel3.add(zero); panel3.add(dot); panel3.add(equal); panel3.add(chu);

13、 /添加按钮事件监听 jianting number=new jianting(); jianting_sf suanfa=new jianting_sf(); seven.addActionListener(number); eight.addActionListener(number); nine.addActionListener(number); jia.addActionListener(suanfa); four.addActionListener(number); five.addActionListener(number); six.addActionListener(numb

14、er); jian.addActionListener(suanfa); one.addActionListener(number); two.addActionListener(number); three.addActionListener(number); cheng.addActionListener(suanfa); zero.addActionListener(number); dot.addActionListener(number); equal.addActionListener(suanfa); chu.addActionListener(suanfa); C.addAct

15、ionListener(number); CE.addActionListener(number); sin.addActionListener(suanfa); cos.addActionListener(suanfa); tan.addActionListener(suanfa); ercifang.addActionListener(suanfa); sancifang.addActionListener(suanfa); jiecheng.addActionListener(suanfa); lg.addActionListener(suanfa); pai.addActionList

16、ener(suanfa); Backspace.addActionListener(number); JButton btns=new JButton(计算器); btns.setEnabled(false);/按钮不可被按 btns.setPreferredSize(new Dimension(10,10); panel1.add(btns); panel4.add(panel1,BorderLayout.NORTH); panel4.add(panel2,BorderLayout.WEST); panel4.add(panel3,BorderLayout.CENTER); this.add

17、(panel4); this.add(tf,BorderLayout.NORTH); pack(); this.setResizable(true); this.setSize(500,250); this.setDefaultCloseOperation(EXIT_ON_CLOSE);/窗口可关闭 class jianting implements ActionListener public void actionPerformed(ActionEvent e) String str=e.getActionCommand(); if(str.equals(C) tf.setText(); i

18、f(str.equals(CE) tf.setText(); if(str.equals() s=tf.getText(); int i=s.length(); if(i0) tf.setText(tf.getText().substring(0,i-1); if(e.getSource()=seven) tf.setText(tf.getText()+7); if(e.getSource()=eight) tf.setText(tf.getText()+8); if(e.getSource()=nine) tf.setText(tf.getText()+9); if(e.getSource(

19、)=four) tf.setText(tf.getText()+4); if(e.getSource()=five) tf.setText(tf.getText()+5); if(e.getSource()=six) tf.setText(tf.getText()+6); if(e.getSource()=one) tf.setText(tf.getText()+1); if(e.getSource()=two) tf.setText(tf.getText()+2); if(e.getSource()=three) tf.setText(tf.getText()+3); if(e.getSou

20、rce()=zero) tf.setText(tf.getText()+0); if(e.getSource()=dot) tf.setText(tf.getText()+.); class jianting_sf implements ActionListener public void actionPerformed(ActionEvent e) String str=e.getActionCommand(); if(str.equals(+) s=tf.getText();/获取文本框的值 num1=Double.parseDouble(s);/String类型转换为double型 tf

21、.setText();/赋值 x=0; else if(str.equals(-) s=tf.getText(); num1=Double.parseDouble(s); tf.setText(); x=1; else if(str.equals(*) s=tf.getText(); num1=Double.parseDouble(s); tf.setText(); x=2; else if(str.equals(/) s=tf.getText(); num1=Double.parseDouble(s); tf.setText(); x=3; else if(str.equals(sin) s

22、=tf.getText(); num1=Double.parseDouble(s); x=4; else if(str.equals(cos) s=tf.getText(); num1=Double.parseDouble(s); x=5; else if(str.equals(tan) s=tf.getText(); num1=Double.parseDouble(s); x=6; else if(str.equals(n!) s=tf.getText(); num1=Double.parseDouble(s); num3=1; for(double start=1;start=num1;s

23、tart+) num3=start*num3; x=7; else if(str.equals(x2) s=tf.getText(); num1=Double.parseDouble(s); x=8; else if(str.equals(x3) s=tf.getText(); num1=Double.parseDouble(s); x=9; else if(str.equals() tf.setText(String.valueOf(Math.PI); x=10; else if(str.equals(lg) s=tf.getText(); num1=Double.parseDouble(s

24、); x=11; if(str.equals(=) s=tf.getText(); num2=Double.parseDouble(s); switch(x) case 0: tf.setText(+(num1+num2); break; case 1: tf.setText(+(num1-num2); break; case 2: tf.setText(+(num1*num2); break; case 3: tf.setText(+(num1/num2); break; case 4: tf.setText(+(Math.sin(num1*Math.PI/180);/转换为度数 break

25、; case 5: tf.setText(+(Math.cos(num1*Math.PI/180); break; case 6: tf.setText(+(Math.tan(num1*Math.PI/180); break; case 7: tf.setText(+num3); break; case 8: tf.setText(+(num1*num1); break; case 9: tf.setText(+(num1*num1*num1); break; case 10: num1=Math.PI; tf.setText(+num1); break; case 11: tf.setText(+(Math.log(num1); break; public static void main(Stringargs) new myCalucator().setVisible(true);