import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
public class Jisuanqi extends JFrame implements ActionListener {
/**
*
*/
private static final long serialVersionUID = 1L;
Result result = new Result(); // å®ä¹textçé¢æ¿
Number_Key number_key = new Number_Key(); // å®ä¹æé®é¢æ¿
// å½ç¹å»æé®+ã-ã*ã/æ¶ï¼com = true
boolean com = false;
// å½i=0æ¶è¯´ææ¯æ们第ä¸æ¬¡è¾å
¥ï¼å符串textä¸ä¼ç´¯å
int i = 0;
// åæ¾textçå
容
String text = "";
// åæ¾ç¹å»æé®+ã-ã*ã/ä¹åçæ°å¼
double defbutton = 0;
// +ã-ã*ã/ç代å·åå«ä¸º1ï¼2ï¼3ï¼4
int symbol = 0;
// æé å½æ°
Jisuanqi() {
super("计ç®å¨"); // 设å®æ é¢
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 设å®å
³éçªä½æ¶éåºç¨åº
JPanel pane = new JPanel(); // å®ä¹ä¸»é¢æ¿
pane.setLayout(new BorderLayout());
setBounds(380, 220, 30, 80); // å两个åæ°æ¯å¨å±å¹ä¸æ¾ç¤ºçåæ ï¼å两个æ¯å¤§å°
// æ¿æ¢å¾æ
ImageIcon icon = new ImageIcon("F:1.GIF");
// Jisuanqi.class.getResource("APPLE.GIF")
// );
setIconImage(icon.getImage());
pane.add(result, BorderLayout.NORTH);
pane.add(number_key, BorderLayout.CENTER);
pane.add(number_key.equal, BorderLayout.SOUTH);
number_key.one.addActionListener(this); // 对1æé®æ·»å çå¬äºä»¶
number_key.two.addActionListener(this); // 对2æé®æ·»å çå¬äºä»¶
number_key.three.addActionListener(this); // 对3æé®æ·»å çå¬äºä»¶
number_key.four.addActionListener(this); // 对4æé®æ·»å çå¬äºä»¶
number_key.five.addActionListener(this); // 对5æé®æ·»å çå¬äºä»¶
number_key.six.addActionListener(this); // 对6æé®æ·»å çå¬äºä»¶
number_key.seven.addActionListener(this); // 对7æé®æ·»å çå¬äºä»¶
number_key.eight.addActionListener(this); // 对8æé®æ·»å çå¬äºä»¶
number_key.nine.addActionListener(this); // 对9æé®æ·»å çå¬äºä»¶
number_key.zero.addActionListener(this); // 对0æé®æ·»å çå¬äºä»¶
number_key.ce.addActionListener(this); // 对置é¶æé®æ·»å çå¬äºä»¶
number_key.plus.addActionListener(this); // 对+æé®æ·»å çå¬äºä»¶
number_key.equal.addActionListener(this); // 对=æé®æ·»å çå¬äºä»¶
number_key.sub.addActionListener(this); // 对-æé®æ·»å çå¬äºä»¶
number_key.mul.addActionListener(this); // 对*æé®æ·»å çå¬äºä»¶
number_key.div.addActionListener(this); // 对/æé®æ·»å çå¬äºä»¶
number_key.point.addActionListener(this); // 对.æé®æ·»å çå¬äºä»¶
setContentPane(pane);
pack(); // åå§åçªä½å¤§å°ä¸ºæ£å¥½çæ¾æææé®
}
// å个æé®è§¦åçäºä»¶
public void actionPerformed(ActionEvent e) {
/*
* å¦ææ¯ç¹å»æ°åæé®é£ä¹å
è¦å¤ææ¯å¦å¨æ¤ä¹åç¹å»äº+ã-ã*ã/ã=ï¼å¦ææ¯é£ä¹com=true å¦æ没æcom=
* false;æè
æ¯å¦ç¹å»æ°åé®ï¼å¦ææ¯i = 1,å¦æ没æ i = 0;
*/
if (e.getSource() == number_key.one) {
if (com || i == 0) {
result.text.setText("1");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "1");
}
} else if (e.getSource() == number_key.two) {
if (com || i == 0) {
result.text.setText("2");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "2");
}
} else if (e.getSource() == number_key.three) {
if (com || i == 0) {
result.text.setText("3");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "3");
}
} else if (e.getSource() == number_key.four) {
if (com || i == 0) {
result.text.setText("4");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "4");
}
} else if (e.getSource() == number_key.five) {
if (com || i == 0) {
result.text.setText("5");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "5");
}
} else if (e.getSource() == number_key.six) {
if (com || i == 0) {
result.text.setText("6");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "6");
}
} else if (e.getSource() == number_key.seven) {
if (com || i == 0) {
result.text.setText("7");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "7");
}
} else if (e.getSource() == number_key.eight) {
if (com || i == 0) {
result.text.setText("8");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "8");
}
} else if (e.getSource() == number_key.nine) {
if (com || i == 0) {
result.text.setText("9");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "9");
}
}
/*
* 对äº0è¿ä¸ªæé®æä¸å®ç说æ³ï¼å¨ç¨åºéä¸ä¼åºç°å¦00000è¿æ ·çæ
åµï¼å äºå¤ææ¡ä»¶å°±æ¯
* å¦ætextä¸çæ°å¼=0å°±è¦å¤æå¨è¿ä¸ªæ°å¼ä¸æ¯å¦æ.åå¨?å¦ææé£ä¹å°±å¨åæ¥æ°å¼åºç¡ä¹ä¸æ·» å 0;å¦åä¿æåæ¥çæ°å¼ä¸å
*/
else if (e.getSource() == number_key.zero) { // result.text.getText()æ¯å¾å°textéå
容çææ
if (com || i == 0) {
result.text.setText("0");
com = false;
i = 1;
} else {
text = result.text.getText();
if (Float.parseFloat(text) > 0 || Float.parseFloat(text) < 0) { // Float.parseFloat(text)å°±æ¯ç±»å转æ¢äºï¼ä¸é¢é½æ¯ä¸æ ·
result.text.setText(text + "0");
} else {
if (text.trim().indexOf(".") == -1) {
result.text.setText(text);
} else {
result.text.setText(text + "0");
}
}
}
} else if (e.getSource() == number_key.ce) {
result.text.setText("0");
i = 0;
com = true;
// text = "";
defbutton = 0;
}
/*
* æ¬ç¨åºä¸ä¼è®©ä¸ä¸ªæ°å¼ä¸åºç°2个以ä¸çå°æ°ç¹.å
·ä½åæ³æ¯:å¤ææ¯å¦å·²ç»åå¨.åå¨å°±ä¸æ·»å , ä¸åå¨å°±æ·»å .
*/
else if (e.getSource() == number_key.point) {
if (com || i == 0) {
result.text.setText("0.");
com = false;
i = 1;
} else {
text = result.text.getText();
if (text.trim().indexOf(".") == -1) {
result.text.setText(text + ".");
} else {
result.text.setText(text);
}
}
} // è·å¾ç¹å»+ä¹åçæ°å¼
else if (e.getSource() == number_key.plus) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
symbol = 1;
} // è·å¾ç¹å»-ä¹åçæ°å¼
else if (e.getSource() == number_key.sub) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
symbol = 2;
} // è·å¾ç¹å»*ä¹åçæ°å¼
else if (e.getSource() == number_key.mul) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
System.out.println(defbutton);
symbol = 3;
} // è·å¾ç¹å»/ä¹åçæ°å¼
else if (e.getSource() == number_key.div) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
symbol = 4;
} else if (e.getSource() == number_key.equal) {
switch (symbol) {
case 1: { // 计ç®å æ³
double ad = defbutton
+ Double.parseDouble(result.text.getText());
result.text.setText(ad + "");
i = 0;
text = "";
break;
}
case 2: { // 计ç®åæ³
double ad = defbutton
- Double.parseDouble(result.text.getText());
result.text.setText(String.valueOf(ad));
i = 0;
text = "";
break;
}
case 3: { // 计ç®ä¹æ³
double ad = defbutton
* Double.parseDouble(result.text.getText());
result.text.setText(ad + "");
i = 0;
text = "";
break;
}
case 4: { // 计ç®é¤æ³
double ad = defbutton
/ Double.parseDouble(result.text.getText());
result.text.setText(ad + "");
i = 0;
text = "";
break;
}
}
System.out.println(com);
}
System.out.println(result.text.getText());
}
@SuppressWarnings("deprecation")
public static void main(String[] args) {
Jisuanqi loveyou = new Jisuanqi();
loveyou.show();
}
}
// 计ç®å¨æ°åæé®å®ä¹é¢æ¿
class Number_Key extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
JButton zero = new JButton("0"); // æ°åé®0
JButton one = new JButton("1"); // æ°åé®1
JButton two = new JButton("2"); // æ°åé®2
JButton three = new JButton("3"); // æ°åé®3
JButton four = new JButton("4"); // æ°åé®4
JButton five = new JButton("5"); // æ°åé®5
JButton six = new JButton("6"); // æ°åé®6
JButton seven = new JButton("7"); // æ°åé®7
JButton eight = new JButton("8"); // æ°åé®8
JButton nine = new JButton("9"); // æ°åé®9
JButton plus = new JButton("+");
JButton sub = new JButton("-");
JButton mul = new JButton("*");
JButton div = new JButton("/");
JButton equal = new JButton("=");
JButton ce = new JButton("æ¸
é¶"); // ç½®é¶é®
JButton point = new JButton(".");
Number_Key() {
setLayout(new GridLayout(4, 4, 1, 1)); // å®ä¹å¸å±ç®¡çå¨ä¸ºç½æ ¼å¸å±
setBackground(Color.blue); // 设置èæ¯é¢è²
// æ·»å æé®
add(one);
add(two);
add(three);
add(four);
add(five);
add(six);
add(seven);
add(eight);
add(nine);
add(zero);
add(plus);
add(sub);
add(mul);
add(div);
add(point);
add(equal);
add(ce);
}
}
// 计ç®å¨æ¾ç¤ºç»æççªä½
class Result extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
// textå
æ¯è¾å
¥åç»æ
JTextField text = new JTextField("0");
@SuppressWarnings("deprecation")
Result() { // 讲è¾å
¥çæ°åæå¾å°çç»æå¨textçå³è¾¹æ¾ç¤º
text.setHorizontalAlignment(SwingConstants.RIGHT);
text.enable(false); // ææ¬æ¡ä¸è½ç¼è¾
setLayout(new BorderLayout()); // 设å®å¸å±ç®¡çå¨è¾¹æ¡å¸å±
add(text, BorderLayout.CENTER); // textæ¾ç½®å¨çªä½çä¸é´
}
}
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