java计算器代码

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;/ ConstructorCalFrame() super(“Small Calculator“);setLayout(new FlowLayout(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);p1 = new CalPanelL();p2 = new CalPanelR();add(p1);add(p2);setVisible(true);addWindowListener(new Wclose();/ inner class:CalButtonclass CalButton extends Button CalButton(String s)super(s);setBackground(Color.gray);/ inner class: CalPanelLclass CalPanelL extends Panel CalButton b0, b1, b2, 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 CalButton(“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(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(new 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(“+“); bSub = 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 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 implements 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 actionPerformed(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 text = 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 ActionList