《JAVA计算器代码》word版

1、import java.awt.*; import java.awt.event.*;public class Cal public static void main(String args) CalFrame f = new CalFrame(); class CalFrame extends Frame double d1, d2; int op = -1; TextField tf; CalPanelL p1; CalPanelR p2; / Constructor CalFrame() super(Small Calculator); setLayout(new FlowLayout(

2、FlowLayout.CENTER,8,10); setBackground(new Color(100,150,150); setForeground(Color.white); setResizable(false); setSize(300,200); tf = new TextField(22); tf.setEditable(false); tf.setBackground(new Color(108,118,103); tf.setForeground(Color.white); tf.setFont(new Font(Arial,Font.BOLD,16); add(tf); p

3、1 = new CalPanelL(); p2 = new CalPanelR(); add(p1); add(p2); setVisible(true); addWindowListener(new Wclose(); / inner class:CalButton class CalButton extends Button CalButton(String s) super(s); setBackground(Color.gray); / inner class: CalPanelL class CalPanelL extends Panel CalButton b0, b1, b2,

4、b3, b4, b5, b6, b7, b8, b9, bPN, bPoint; CalPanelL() setLayout(new GridLayout(4,3); setFont(new Font(TimesRoman,Font.BOLD,16); b0 = new CalButton(0); b1 = new CalButton(1); b2 = new CalButton(2); b3 = new CalButton(3); b4 = new CalButton(4); b5 = new CalButton(5); b6 = new CalButton(6); b7 = new Cal

5、Button(7); b8 = new CalButton(8); b9 = new CalButton(9); bPN = new CalButton(+/-); bPoint = new CalButton(.); / 加入按钮 add(b7); b7.addActionListener(new PressB7(); add(b8); b8.addActionListener(new PressB8(); add(b9); b9.addActionListener(new PressB9(); add(b4); b4.addActionListener(new PressB4(); add

6、(b5); b5.addActionListener(new PressB5(); add(b6); b6.addActionListener(new PressB6(); add(b1); b1.addActionListener(new PressB1(); add(b2); b2.addActionListener(new PressB2(); add(b3); b3.addActionListener(new PressB3(); add(b0); b0.addActionListener(new PressB0(); add(bPN); bPN.addActionListener(n

7、ew PressBPN(); ; add(bPoint); bPoint.addActionListener(new PressBPoint(); class CalPanelR extends Panel CalButton bAdd, bSub, bMul, bDiv, bSqrt, bSin, bCos, bYx, bLn, bEqual, bCE, bBack; CalPanelR() setLayout(new GridLayout(4,3); setFont(new Font(TimesRoman,Font.BOLD,16); bAdd = new CalButton(+); bS

8、ub = new CalButton(-); bMul = new CalButton(*); bDiv = new CalButton(/); bSqrt = new CalButton(sqrt); bSin = new CalButton(sin); bCos = new CalButton(cos); bYx = new CalButton(yx); bLn = new CalButton(ln); bEqual = new CalButton(=); bCE = new CalButton(CE); bBack = new CalButton(= 0 & text.charAt(0)

9、 = 9) tf.setText(-+text.substring(0); else if(text.charAt(0) = .) tf.setText(-0+text.substring(0); catch(Exception ee) class PressBPoint implements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); if(text.lastIndexOf(.) = -1) tf.setText(text+.); class PressB0 imp

10、lements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+0); class PressB1 implements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+1); class PressB2 implements ActionListener public void act

11、ionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+2); class PressB3 implements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+3); class PressB4 implements ActionListener public void actionPerformed(ActionEvent e) String tex

12、t = tf.getText(); tf.setText(text+4); class PressB5 implements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+5); class PressB6 implements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+6); class PressB7 implements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+7); class PressB8 implements ActionListener public void actionPerformed(ActionEvent e) String text = tf.getText(); tf.setText(text+8); class PressB9 implements ActionLi