gui小计算器的程序写法
import java.awt.BorderLayout;
import java.awt.EventQueue; import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.BorderLayout;
import java.awt.EventQueue; import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JButton;
import java.awt.Color;
import javax.swing.JTextArea;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.JCheckBox;
import javax.swing.JTextField;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.SwingConstants;
import java.awt.Font; public class gui1 extends JFrame { private JPanel contentPane;
private JTextField textField; /**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
gui1 frame = new gui1();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
} /**
* Create the frame.
*/
public void f1(){
//获取文本框的内容
textField.getText();
//对字符串进行解析（获取你有用的信息）//1+1=
//System.out.println(textField.getText());
//1+1= //截取+号之前的数据，+号之后=号之前的数据 int aa1 =(textField.getText()).indexOf("+");
int aa2 =(textField.getText()).indexOf("-");
int aa3 =(textField.getText()).indexOf("*");
int aa4 =(textField.getText()).indexOf("/");
//判断加减乘除
if(-!=aa1){
int a=(textField.getText()).indexOf("+");
//int b=(textField.getText()).indexOf("+1");
int d=(textField.getText()).indexOf("=");
String str1=new String();
String str2=new String();
str1=(textField.getText()).substring(,a);
str2=(textField.getText()).substring(a+,d); //截取到了之后，结果是个字符串，要进行转换，转换成int
int e1=Integer.parseInt(str1);
int e2=Integer.parseInt(str2);
//执行操作，计算（用方法实现），返回值int
gui1 ss=new gui1();
ss.f(e1,e2);
textField.setText(""+ss.f(e1,e2));
}else if(-!=aa2){
int a=(textField.getText()).indexOf("-");
//int b=(textField.getText()).indexOf("+1");
int d=(textField.getText()).indexOf("=");
String str1=new String();
String str2=new String();
str1=(textField.getText()).substring(,a);
str2=(textField.getText()).substring(a+,d); //截取到了之后，结果是个字符串，要进行转换，转换成int
int e1=Integer.parseInt(str1);
int e2=Integer.parseInt(str2);
//执行操作，计算（用方法实现），返回值int
gui1 ss=new gui1();
ss.f4(e1,e2);
textField.setText(""+ss.f4(e1,e2)); }else if(-!=aa3){
int a=(textField.getText()).indexOf("*");
//int b=(textField.getText()).indexOf("+1");
int d=(textField.getText()).indexOf("=");
String str1=new String();
String str2=new String();
str1=(textField.getText()).substring(,a);
str2=(textField.getText()).substring(a+,d); //截取到了之后，结果是个字符串，要进行转换，转换成int
int e1=Integer.parseInt(str1);
int e2=Integer.parseInt(str2);
//执行操作，计算（用方法实现），返回值int
gui1 ss=new gui1();
ss.f2(e1,e2);
textField.setText(""+ss.f2(e1,e2)); }else if(-!=aa4){
int a=(textField.getText()).indexOf("/");
//int b=(textField.getText()).indexOf("+1");
int d=(textField.getText()).indexOf("=");
String str1=new String();
String str2=new String();
str1=(textField.getText()).substring(,a);
str2=(textField.getText()).substring(a+,d); //截取到了之后，结果是个字符串，要进行转换，转换成int
int e1=Integer.parseInt(str1);
int e2=Integer.parseInt(str2);
//执行操作，计算（用方法实现），返回值int
gui1 ss=new gui1();
ss.f3(e1,e2);
textField.setText(""+ss.f3(e1,e2)); }
//输出结果，settext（string t），字符串，int转成成string，作为入参{String = 1+“1”}
//String a1=(String)"a2";
//输出结果：把之前的=号公式，要放在前面 }
public int f(int w,int r){
int p=w+r;
return p;
}
public int f4(int w,int r){
int p=w-r;
return p;
}
public int f2(int w,int r){
int p=w*r;
return p;
}
public int f3(int w,int r){
int p=w/r;
return p;
}
public gui1() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(, , , );
contentPane = new JPanel();
contentPane.setBackground(Color.LIGHT_GRAY);
contentPane.setForeground(Color.GREEN);
contentPane.setBorder(new EmptyBorder(, , , ));
setContentPane(contentPane); JButton btnNewButton_8 = new JButton("m-");
btnNewButton_8.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
btnNewButton_8.setBackground(Color.ORANGE); JButton btnNewButton_6 = new JButton("+"); JButton btnNewButton_18 = new JButton("*"); JButton btnNewButton_20 = new JButton("\u221A "); JButton btnNewButton_22 = new JButton("%"); JButton btnNewButton_21 = new JButton("1/x"); textField = new JTextField();
textField.setColumns(); JButton btnNewButton = new JButton("MC");
btnNewButton.setBackground(Color.LIGHT_GRAY); JButton btnMr = new JButton("MR"); JButton btnMs = new JButton("MS"); JButton btnM = new JButton("M+"); JButton btnM_1 = new JButton("M-"); JButton button_4 = new JButton("<--");
button_4.setFont(new Font("宋体", Font.PLAIN, ));
button_4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
}); JButton button_5 = new JButton("");
button_5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
}
}); JButton button_6 = new JButton("");
button_6.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
}
}); JButton button_7 = new JButton("");
button_7.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText(textField.getText()+"");
}
}); JButton button_8 = new JButton("");
button_8.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
String inputValue = JOptionPane.showInputDialog("请输入密码：");
}
}); JButton btnCe = new JButton("CE"); JButton button_10 = new JButton("");
button_10.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
}
}); JButton button_11 = new JButton("");
button_11.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
}
}); JButton button_12 = new JButton("");
button_12.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText(textField.getText()+"");
}
}); JButton btnC = new JButton("C");
btnC.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText("");
}
}); JButton button_14 = new JButton("\u00B1"); JButton button_15 = new JButton("\u221A");
button_15.setFont(new Font("宋体", Font.PLAIN, ));
button_15.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
textField.setText(textField.getText()+"√");
}
}); JButton button_16 = new JButton("");
button_16.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
}
}); JButton button_17 = new JButton("/");
button_17.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"/");
}
}); JButton button_18 = new JButton("%"); JButton button_19 = new JButton("");
button_19.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
}
}); JButton button_20 = new JButton("*");
button_20.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"*");
}
}); JButton btnx = new JButton("1/x");
btnx.setFont(new Font("微软雅黑", Font.PLAIN, ));
btnx.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
}); JButton button_22 = new JButton("");
button_22.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"");
}
}); JButton button_23 = new JButton("-");
button_23.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"-");
}
}); JButton button_24 = new JButton(".");
button_24.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+".");
}
}); JButton button_25 = new JButton("+");
button_25.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textField.setText(textField.getText()+"+");
//JOptionPane.showConfirmDialog(null,
// "请选择", "titie", JOptionPane.YES_NO_OPTION); }
}); JButton button_26 = new JButton("=");
button_26.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//等于、、结果输出 textField.setText(textField.getText()+"=");
f1();
} });
GroupLayout gl_contentPane = new GroupLayout(contentPane);
gl_contentPane.setHorizontalGroup(
gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addGap()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING, false)
.addGroup(gl_contentPane.createSequentialGroup()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(button_6, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_7, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(button_11, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_12, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)))
.addComponent(button_8, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_19, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_20, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnx, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_22, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_23, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_24, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_25, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_26, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.TRAILING)
.addGroup(gl_contentPane.createSequentialGroup()
.addGap()
.addComponent(btnNewButton_6, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(btnNewButton_21, GroupLayout.DEFAULT_SIZE, , Short.MAX_VALUE)
.addComponent(btnNewButton_22, GroupLayout.DEFAULT_SIZE, , Short.MAX_VALUE)
.addComponent(btnNewButton_20, GroupLayout.DEFAULT_SIZE, , Short.MAX_VALUE))
.addGap()
.addComponent(btnNewButton_18))
.addGroup(gl_contentPane.createSequentialGroup()
.addGap()
.addComponent(btnNewButton_8)
.addGap())))
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(btnNewButton, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnMr, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnMs, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnM, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnM_1, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addComponent(textField, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_4, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnCe, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnC, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_14, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_15, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_5, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_10, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_16, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_17, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_18, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
);
gl_contentPane.setVerticalGroup(
gl_contentPane.createParallelGroup(Alignment.TRAILING)
.addGroup(gl_contentPane.createSequentialGroup()
.addContainerGap()
.addComponent(textField, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(btnNewButton, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(btnMr, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(btnMs, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(btnM, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(btnM_1, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(button_4, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(btnCe, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(btnC, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_14, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_15, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addGap()
.addGroup(gl_contentPane.createParallelGroup(Alignment.TRAILING)
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(btnNewButton_20)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnNewButton_22)
.addPreferredGap(ComponentPlacement.RELATED))
.addComponent(btnNewButton_8, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE)
.addComponent(btnNewButton_18)
.addComponent(btnNewButton_21))
.addGap()
.addComponent(btnNewButton_6))
.addGroup(gl_contentPane.createSequentialGroup()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_5, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_6, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_10, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_11, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_16, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_19, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_17, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_20, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(button_12, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_7, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_22, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_23, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(button_25, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_24, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addComponent(button_8, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)))
.addGroup(gl_contentPane.createSequentialGroup()
.addComponent(button_18, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnx, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(button_26, GroupLayout.PREFERRED_SIZE, , GroupLayout.PREFERRED_SIZE)))
.addGap())
);
contentPane.setLayout(gl_contentPane);
}
}
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