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| package cn.cduestc.fire;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.Collections;
public class Story {
public static void main(String[] args) {
MyFrame myFrame = new MyFrame();
myFrame.setTitle("简易计算器--单次计算完成请点击AC继续下一次运算");
}
}
class MyFrame extends Frame implements ActionListener {
TextField textField = new TextField();
Panel panel1 = new Panel(new GridLayout(1, 4));
Button button1 = new Button("1");
Button button2 = new Button("2");
Button button3 = new Button("3");
Button buttonadd = new Button("+");
Panel panel2 = new Panel(new GridLayout(1, 4));
Button button4 = new Button("4");
Button button5 = new Button("5");
Button button6 = new Button("6");
Button buttonsubtract = new Button("-");
Panel panel3 = new Panel(new GridLayout(1, 4));
Button button7 = new Button("7");
Button button8 = new Button("8");
Button button9 = new Button("9");
Button buttonmultiply = new Button("x");
Panel panel4 = new Panel(new GridLayout(1, 4));
Button button0 = new Button("0");
Button button_equal = new Button("=");
Button buttondivide = new Button("÷");
Button buttonpoint = new Button(".");
Panel panel5 = new Panel(new GridLayout(1, 4));
JButton button_eliminate = new JButton("AC");
Button buttonremainder = new Button("%");
Button buttonclose = new Button("close");
Button buttonsqure = new Button("²");
public MyFrame(){
JFrame jf=new JFrame("简易计算器");
setBounds(300, 0, 800, 800);
button_eliminate.setFont(new java.awt.Font(
"SimSun", 1, 100));
buttonadd.setFont(new java.awt.Font(
"SimSun", 1, 50));
buttonsubtract.setFont(new java.awt.Font(
"SimSun", 1, 50));
buttonmultiply.setFont(new java.awt.Font(
"SimSun", 1, 50));
buttondivide.setFont(new java.awt.Font(
"SimSun", 1, 50));
button_equal.setFont(new java.awt.Font(
"SimSun", 1, 50));
buttonpoint.setFont(new java.awt.Font(
"SimSun", 1, 50));
buttonremainder.setFont(new java.awt.Font(
"SimSun", 1, 50));
buttonclose.setFont(new java.awt.Font(
"SimSun", 1, 50));
buttonsqure.setFont(new java.awt.Font(
"SimSun", 1, 50));
textField.setFont(new java.awt.Font(
"SimSun", 1, 50));
setLayout(new GridLayout(6, 1));
setVisible(true);
add(textField);
panel1.add(buttonadd);
panel1.add(button1);
panel1.add(button2);
panel1.add(button3);
add(panel1);
panel2.add(buttonsubtract);
panel2.add(button4);
panel2.add(button5);
panel2.add(button6);
add(panel2);
panel3.add(buttonmultiply);
panel3.add(button7);
panel3.add(button8);
panel3.add(button9);
add(panel3);
panel4.add(buttondivide);
panel4.add(button_equal);
panel4.add(button0);
panel4.add(buttonpoint);
add(panel4);
panel5.add(buttonremainder);
panel5.add(buttonsqure);
panel5.add(buttonclose);
panel5.add(button_eliminate);
add(panel5);
ArrayList<Button> arrayList=new ArrayList<>();
Collections.addAll(arrayList,button0,button1,button2,button3,button4,button5,button6,button7,button8,button9,button_equal,buttonadd,buttonsubtract,buttonmultiply,buttondivide,buttonpoint,buttonremainder,buttonclose,buttonsqure);
button_eliminate.addActionListener(this);
for(Button button:arrayList){
button.addActionListener(this);
}
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
String str1="";
@Override
public void actionPerformed(ActionEvent e) {
String str = e.getActionCommand();
if(str.equals("=")){
String text=textField.getText();
String[] text1;
float c;
if ((text1 = text.split("\\+")).length == 2) {
c = Float.parseFloat(text1[0]) + Float.parseFloat(text1[1]);
textField.setText(String.valueOf(c));
} else if ((text1 = text.split("-")).length == 2) {
c = Float.parseFloat(text1[0]) - Float.parseFloat(text1[1]);
textField.setText(String.valueOf(c));
} else if ((text1 = text.split("x")).length == 2) {
c = Float.parseFloat(text1[0]) * Float.parseFloat(text1[1]);
textField.setText(String.valueOf(c));
} else if ((text1 = text.split("÷")).length == 2) {
c = Float.parseFloat(text1[0]) / Float.parseFloat(text1[1]);
textField.setText(String.valueOf(c));
}
else if ((text1 = text.split("%")).length == 2) {
if(text1[0].equals(".")){
textField.setText("操作错误");
System.exit(0);
}
if(Float.parseFloat(text1[0]) >Float.parseFloat(text1[1])) {
c = (Float.parseFloat(text1[0])%Float.parseFloat(text1[1]));
textField.setText(String.valueOf(c));
}
else{
c=Float.parseFloat(text1[0]);
textField.setText(String.valueOf(c));
}
}else if ((text1 = text.split("²")).length == 1) {
c = (float) Math.pow(Float.parseFloat(text1[0]),2);
textField.setText(String.valueOf(c));
}
}
else if(str.equals("AC")){
str1 = "";
textField.setText("");
} else if (str.equals("close")) {
System.exit(0);
}
else{
textField.setText(str1=str1+str);
}
}
}
|
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