JAVA编写的计算机代码.doc

import java.awt.*;import java.applet.*;import java.awt.event.*;import java.lang.*;import java.io.*;import javax.swing.*;public class Calculator extends JFrame int i, j1 = 0, j2 = 0;double res = 0, n = 0;String s = , s1 = ;double num = new double100;char ch = new char100; / 定义变量MyFrame f = new MyFrame();/ WL fwl=new WL();JMenuBar mb1 = new JMenuBar();JMenu fi = new JMenu(file);JMenu e = new JMenu(edit);JMenuItem file = new JMenuItem(打开), new JMenuItem(保存),new JMenuItem(退出) ;JMenuItem edit = new JMenuItem(二进制 ), new JMenuItem(八进制 ),new JMenuItem(十六进制 ) ; / 菜单JPanel p1 = new JPanel();JTextField tf = new JTextField(30);JButton b = new JButton(0), new JButton(1), new JButton(2),new JButton(3), new JButton(4), new JButton(5),new JButton(6), new JButton(7), new JButton(8),new JButton(9), new JButton(+), new JButton(-),new JButton(*), new JButton(/), new JButton(=),new JButton(.), new JButton(), new JButton(),new JButton(C), new JButton(backspace),; / 按扭public static void main(String arg) Calculator c = new Calculator();public Calculator() this.setTitle(Calculator);setVisible(true);setBounds(100, 200, 300, 300);mb1.add(fi);for (int i = 0; i file.length; i+) fi.add(filei);mb1.add(e);for (int i = 0; i edit.length; i+) e.add(editi);p1.setLayout(new GridLayout(5, 5);p1.add(b16);p1.add(b17);p1.add(b18);p1.add(b19);p1.add(b7);p1.add(b8);p1.add(b9);p1.add(b10);p1.add(b4);p1.add(b5);p1.add(b6);p1.add(b11);p1.add(b1);p1.add(b2);p1.add(b3);p1.add(b12);p1.add(b0);p1.add(b15);p1.add(b14);p1.add(b13);/ p1=(JPanel)this.getContentPane();setJMenuBar(mb1);tf.setText(0);tf.setHorizontalAlignment(SwingConstants.RIGHT);/tf.enable(false);this.add(tf);setLayout(new BorderLayout();add(North, tf);add(Center, p1);p1 = (JPanel) this.getContentPane();for (i = 0; i 10; i+)bi.addActionListener(new A1();for (i = 10; i 20; i+)bi.addActionListener(new A2();class A1 implements ActionListener public void actionPerformed(ActionEvent e) s += e.getActionCommand();s1 += e.getActionCommand();n = Double.parseDouble(s);tf.setText(s1);class A2 implements ActionListener public void actionPerformed(ActionEvent e) s = ;s1 += e.getActionCommand();if (e.getSource() = b10) chj2+ = +;numj1+ = n;tf.setText(s1);if (e.getSource() = b11) chj2+ = -;numj1+ = n;tf.setText(s1);if (e.getSource() = b12) chj2+ = *;numj1+ = n;tf.setText(s1);if (e.getSource() = b13) chj2+ = /;numj1+ = n;tf.setText(s1);if (e.getSource() = b14) numj1+ = n;for (int j = 0; j j2; j+)switch (chj) case +:numj + 1 = numj + numj + 1;break;case -:numj + 1 = numj - numj + 1;break;case *:numj + 1 = numj * numj + 1;break;case /:numj + 1 = numj / numj + 1;break;tf.setText(s1 + numj2);if (e.getSource() = b18) s1 = ;j1 = 0;j2 = 0;tf.setText(s1);/ if(e.getSource()=b19)/ StringBuffer str=new StringBuffer(s1);/ s1=StringBuffer deleteCharAt(s1.length()-1);/ class MyFrame extends JFram