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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