JAVA做的计算器出了个问题求助
我用for循环定义了按键数组并且同样用循环设置了按钮。可是监听器却似乎没有效果，运行程序的时候点击按钮没反应……
程序代码：import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JiSuanQi extends JFrame implements ActionListener
{
String s = "", s1 = null, s2 = null;
JFrame f = new JFrame("计算器");
JTextField xianshi = new JTextField(30);
JPanel p1 = new JPanel();
JPanel p2 = new JPanel();
JPanel p3 = new JPanel();
JButton dengyu = new JButton("=");
JButton qiuyu = new JButton("%");
JButton del = new JButton("Del");
JButton[] bt = new JButton[16];
int id = 0;
public static void main(String[] args) {
new JiSuanQi().jisuan();
}
public void jisuan() {
f.setLayout(new BorderLayout(8, 8));
p2.setLayout(new GridLayout(4, 4, 8, 8));
p3.setLayout(new BorderLayout(8, 8));
f.add(p1, BorderLayout.NORTH);
f.add(p2);
p3.add(del, BorderLayout.NORTH);
p3.add(qiuyu, BorderLayout.SOUTH);
p3.add(dengyu, BorderLayout.CENTER);
p1.add(xianshi);
f.add(p3, BorderLayout.EAST);
String[] b = { "1", "2", "3", "+", "4", "5", "6", "-", "7", "8", "9",
"*", "0", ".", "C", "/" };
// 设置颜色
for (int i = 0; i < 16; i++) {
bt[i] = new JButton(b[i]);
p2.add(bt[i]);
}
for (int i = 0; i < 16; i++) {
if (i == 3 | i == 7 | i == 11 | i == 15 | i == 14) {
bt[i].setForeground(Color.BLACK);
} else {
bt[i].setForeground(Color.BLUE);
}
}
dengyu.setForeground(Color.BLACK);
del.setForeground(Color.BLACK);
f.pack();
f.setVisible(true);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
for (int i = 0; i < b.length; i++) {
(new Button(b[i])).addActionListener(this);
}
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO 自动生成的方法存根
if(e.getSource() == bt[0]){
s += 1;
s2 += 1;
xianshi.setText(s);
}
if(e.getSource() == bt[1]){
s += 2;
s2 += 2;
xianshi.setText(s);
}
if(e.getSource() == bt[2]){
s += 3;
s2 += 3;
xianshi.setText(s);
}
if(e.getSource() == bt[3]){
s1 = s;
s += '+';
id = 1;
s2 = "";
xianshi.setText(s);
}
if(e.getSource() == bt[4]){
s += 4;
s2 += 4;
xianshi.setText(s);
}
if(e.getSource() == bt[5]){
s += 5;
s2 += 5;
xianshi.setText(s);
}
if(e.getSource() == bt[6]){
s += 6;
s2 += 6;
xianshi.setText(s);
}
if(e.getSource() == bt[7]){
s1 = s;
s += '-';
id = 2;
s2 = "";
xianshi.setText(s);
}
if(e.getSource() == bt[8]){
s += 7;
s2 += 7;
xianshi.setText(s);
}
if(e.getSource() == bt[9]){
s += 8;
s2 += 8;
xianshi.setText(s);
}
if(e.getSource() == bt[10]){
s += 9;
s2 += 9;
xianshi.setText(s);
}
if(e.getSource() == bt[11]){
s1 = s;
s += '*';
id = 3;
s2 = "";
xianshi.setText(s);
}
if(e.getSource() == bt[12]){
s += 0;
s2 += 0;
xianshi.setText(s);
}
if(e.getSource() == bt[13]){
s += '.';
s2 += '.';
xianshi.setText(s);
}
if(e.getSource() == bt[14]){
s = "";
s2 = "";
xianshi.setText(s);
}
if(e.getSource() == bt[15]){
s1 = s;
s += '/';
id = 4;
s2 = "";
xianshi.setText(s);
}
if(e.getSource() == dengyu){
if (id < 1)
;
else {
s += '=';
double a = Double.parseDouble(s1);
double b = Double.parseDouble(s2);
double c = 0;
switch (id) {
case 1:
c = a + b;
break;
case 2:
c = a - b;
break;
case 3:
c = a * b;
break;
case 4:
c = a / b;
break;
}
s += c;
xianshi.setText(s);
}
s = "";
s1 = "";
s2 = "";
id = 0;
}
if(e.getSource() == del){
char[] c1;
char[] c2 = new char[s.length() - 1];
c1 = s.toCharArray();
for (int i = 0; i < s.length() - 1; i++)
c2[i] = c1[i];
s = s.valueOf(c2);
if (id < 1) {
s1 = s;
}
if (s2.length() >= 1) {
char[] c3;
char[] c4 = new char[s2.length() - 1];
c3 = s2.toCharArray();
for (int i = 0; i < s2.length() - 1; i++)
c4[i] = c3[i];
s2 = s2.valueOf(c4);
}
xianshi.setText(s);
}
}
}