import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MyCalculator extends JFrame implements ActionListener
{
MyPanel mp;
ResPanel rp;
boolean pflag = false; // 判断输入框里面是否有“."
String re = ""; // 初始显示框里面的内容
double temp=0; //暂存点击 + - * /前的内容
int op=0; //0为= 1为+ 2为- 3为* 4为/ 记住操作类型
public static void main(String[] args) {
// TODO Auto-generated method stub
MyCalculator myCalculator = new MyCalculator();
}
public MyCalculator() {
rp = new ResPanel();
mp = new MyPanel();
mp.one.addActionListener(this);
mp.two.addActionListener(this);
mp.three.addActionListener(this);
mp.four.addActionListener(this);
mp.five.addActionListener(this);
mp.six.addActionListener(this);
mp.seven.addActionListener(this);
mp.eight.addActionListener(this);
mp.nine.addActionListener(this);
mp.zero.addActionListener(this);
mp.tzero.addActionListener(this);
mp.point.addActionListener(this);
mp.plus.addActionListener(this);
mp.minus.addActionListener(this);
mp.mul.addActionListener(this);
mp.div.addActionListener(this);
mp.del.addActionListener(this);
mp.ce.addActionListener(this);
mp.equal.addActionListener(this);
this.add(rp, BorderLayout.NORTH);
this.add(mp, BorderLayout.CENTER);
this.setTitle("Make By Stone");
this.setSize(280, 200);
this.setResizable(false);
this.setLocation(200, 200);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
re = rp.text.getText(); // 取出显示框里面的内容
if (e.getSource() == mp.one) {
if (re.equals("0")) // 判断
{
rp.text.setText("1");
} else {
rp.text.setText(re + "1");
}
}
if (e.getSource() == mp.two) {
if (re.equals("0")) {
rp.text.setText("2");
} else {
rp.text.setText(re + "2");
}
}
if (e.getSource() == mp.three) {
if (re.equals("0")) {
rp.text.setText("3");
} else {
rp.text.setText(re + "3");
}
}
if (e.getSource() == mp.four) {
if (re.equals("0")) {
rp.text.setText("4");
} else {
rp.text.setText(re + "4");
}
}
if (e.getSource() == mp.five) {
if (re.equals("0")) {
rp.text.setText("5");
} else {
rp.text.setText(re + "5");
}
}
if (e.getSource() == mp.six) {
if (re.equals("0")) {
rp.text.setText("6");
} else {
rp.text.setText(re + "6");
}
}
if (e.getSource() == mp.seven) {
if (re.equals("0")) {
rp.text.setText("7");
} else {
rp.text.setText(re + "7");
}
}
if (e.getSource() == mp.eight) {
if (re.equals("0")) {
rp.text.setText("8");
} else {
rp.text.setText(re + "8");
}
}
if (e.getSource() == mp.nine) {
if (re.equals("0")) {
rp.text.setText("9");
} else {
rp.text.setText(re + "9");
}
}
if (e.getSource() == mp.zero) {
if (re.equals("0")) {
rp.text.setText("0");
} else {
rp.text.setText(re + "0");
}
}
if (e.getSource() == mp.tzero) {
if (re.equals("0.0") || re.equals("0")) {
rp.text.setText("0");
} else {
rp.text.setText(re + "00");
}
}
if (e.getSource() == mp.point) {
if (pflag) {
} else {
if (re.equals("0")) {
rp.text.setText("0.");
} else {
rp.text.setText(re + ".");
}
}
pflag = true;
}
if (e.getSource() == mp.del) {
rp.text.setText(re.substring(0, re.length()-1));
}
if (e.getSource() == mp.ce) {
temp=0;
rp.text.setText("0");
}
if (e.getSource() == mp.plus) {
if(op!=0){
this.calculate();
op=1;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}else{
op=1;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}
}
if (e.getSource() == mp.minus) {
if(op!=0){
this.calculate();
op=2;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}else{
op=2;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}
}
if (e.getSource() == mp.mul) {
if(op!=0){
this.calculate();
op=3;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}else{
op=3;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}
}
if (e.getSource() == mp.div) {
if(op!=0){
this.calculate();
op=4;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}else{
op=4;
temp=Double.valueOf(rp.text.getText());
rp.text.setText("0");
}
}
if (e.getSource() == mp.equal) {
this.calculate();
}
}
public void calculate(){
String s=rp.text.getText();
double temp2=Double.valueOf(s);
switch(op){
case 0:
rp.text.setText(String.valueOf(temp2));
break;
case 1:
temp=temp+temp2;
rp.text.setText(String.valueOf(temp));
op=0;
break;
case 2:
temp=temp-temp2;
rp.text.setText(String.valueOf(temp));
op=0;
break;
case 3:
temp=temp*temp2;
rp.text.setText(String.valueOf(temp));
op=0;
break;
case 4:
temp=temp/temp2;
rp.text.setText(String.valueOf(temp));
op=0;
break;
}
}
}
class ResPanel extends JPanel {
JTextField text;
public ResPanel() {
text = new JTextField(20);
text.setHorizontalAlignment(SwingConstants.RIGHT);
text.setText("0");
text.enable(false);
this.add(text);
}
}
class MyPanel extends JPanel {
JButton zero = new JButton("0");
JButton one = new JButton("1");
JButton two = new JButton("2");
JButton three = new JButton("3");
JButton four = new JButton("4");
JButton five = new JButton("5");
JButton six = new JButton("6");
JButton seven = new JButton("7");
JButton eight = new JButton("8");
JButton nine = new JButton("9");
JButton plus = new JButton("+");
JButton minus = new JButton("-");
JButton mul = new JButton("*");
JButton div = new JButton("/");
JButton point = new JButton(".");
JButton tzero = new JButton("00");
JButton equal = new JButton("=");
JButton ce = new JButton("CE");
JButton del = new JButton("←");
JButton mFor = new JButton("YH");
public MyPanel() {
JPanel jp1 = new JPanel();
JPanel jp2 = new JPanel();
JPanel jp3 = new JPanel();
jp1.setLayout(new GridLayout(4, 4, 5, 5));
jp1.add(one);
jp1.add(two);
jp1.add(three);
jp1.add(four);
jp1.add(five);
jp1.add(six);
jp1.add(seven);
jp1.add(eight);
jp1.add(nine);
jp1.add(zero);
jp1.add(tzero);
jp1.add(point);
jp2.setLayout(new GridLayout(4, 3, 5, 5));
jp2.add(plus);
jp2.add(minus);
jp2.add(mul);
jp2.add(div);
jp2.add(del);
jp2.add(ce);
jp2.add(equal);
jp2.add(mFor);
jp3.add(jp1, BorderLayout.WEST);
jp3.add(jp2, BorderLayout.EAST);
this.add(jp3, BorderLayout.CENTER);
}
}[img]
/Files/shanrenxj/images/myCalculator.jpg[/img][ 源文件：
/Files/shanrenxj/源文件/MyCalculator.zip
posted on 2012-01-03 16:12
爱燕神鹰 阅读(70)
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