import java.awt.BorderLayout; import java.awt.Button; import java.awt.Color; import java.awt.GridLayout; import java.awt.Label; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JOptionPane; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class Address extends JFrame { private String name; private String Phone_Number; private String address; private String id; private String habit; public static void main(String[] args) { Address a = new Address(); } public Address() { setVisible(true); setDefaultCloseOperation(EXIT_ON_CLOSE); BorderLayout b = new BorderLayout(); setTitle(" Address"); setSize(700, 700); add(new Button("Choose Your Information"), BorderLayout.NORTH); add(new Button(" <<= "), BorderLayout.WEST); JPanel p = new JPanel(); p.setBackground(Color.RED); this.add(p,BorderLayout.CENTER); p.setLayout(new GridLayout(3, 1, 10, 10)); for (int i = 0; i < 1; i++) { JButton x=new JButton("Information 1"); JButton y=new JButton("Information 2"); JButton z=new JButton("Information 3"); p.add(x); p.add(y); p.add(z); x.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String str1 =name; String str2 =Phone_Number; String str3 =address; String str4 =id; String str5 =habit; JOptionPane.showMessageDialog(x, "Your Name is:"+str1+" Your Phone_Number is:"+str2+" Your address is:"+str3+" Your id is:"+str4+" Your habit is:"+str5); } }); y.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String str1 =name; String str2 =Phone_Number; String str3 =address; String str4 =id; String str5 =habit; JOptionPane.showMessageDialog(y, "Your Name is:"+str1+" Your Phone_Number is:"+str2+" Your address is:"+str3+" Your id is:"+str4+" Your habit is

:"+str5); } }); z.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String str1 =name; String str2 =Phone_Number; String str3 =address; String str4 =id; String str5 =habit; JOptionPane.showMessageDialog(z, "Your Name is:"+str1+" Your Phone_Number is:"+str2+" Your address is:"+str3+" Your id is:"+str4+" Your habit is:"+str5); } }); } } }

这段代码是一个简单的Java GUI程序，用于展示和管理用户的个人信息。界面由一个标题栏、一个左侧的“返回”按钮和一个中央的面板组成。面板上包含三个按钮，每个按钮代表一个不同的用户信息。当用户点击某个按钮时，程序会弹出一个对话框，显示该用户信息的各个字段。这个程序还比较简单，但是可以作为学习Java GUI编程的入门例子。

相关问题

用import java.awt.*设计一个简单计算器

以下是一个使用 Java AWT 设计的简单计算器的示例代码：

import java.awt.*;
import java.awt.event.*;

public class Calculator extends Frame implements ActionListener {

    private TextField resultField;

    private double operand1 = 0;
    private double operand2 = 0;
    private String operator = "";
    private boolean isOperatorSelected = false;

    public Calculator() {
        setTitle("Calculator");

        resultField = new TextField("0", 20);
        resultField.setEditable(false);

        Button btn1 = new Button("1");
        Button btn2 = new Button("2");
        Button btn3 = new Button("3");
        Button btn4 = new Button("4");
        Button btn5 = new Button("5");
        Button btn6 = new Button("6");
        Button btn7 = new Button("7");
        Button btn8 = new Button("8");
        Button btn9 = new Button("9");
        Button btn0 = new Button("0");
        Button btnPlus = new Button("+");
        Button btnMinus = new Button("-");
        Button btnMultiply = new Button("*");
        Button btnDivide = new Button("/");
        Button btnEquals = new Button("=");
        Button btnClear = new Button("C");

        btn1.addActionListener(this);
        btn2.addActionListener(this);
        btn3.addActionListener(this);
        btn4.addActionListener(this);
        btn5.addActionListener(this);
        btn6.addActionListener(this);
        btn7.addActionListener(this);
        btn8.addActionListener(this);
        btn9.addActionListener(this);
        btn0.addActionListener(this);
        btnPlus.addActionListener(this);
        btnMinus.addActionListener(this);
        btnMultiply.addActionListener(this);
        btnDivide.addActionListener(this);
        btnEquals.addActionListener(this);
        btnClear.addActionListener(this);

        Panel buttonPanel = new Panel(new GridLayout(4, 4, 5, 5));
        buttonPanel.add(btn1);
        buttonPanel.add(btn2);
        buttonPanel.add(btn3);
        buttonPanel.add(btnPlus);
        buttonPanel.add(btn4);
        buttonPanel.add(btn5);
        buttonPanel.add(btn6);
        buttonPanel.add(btnMinus);
        buttonPanel.add(btn7);
        buttonPanel.add(btn8);
        buttonPanel.add(btn9);
        buttonPanel.add(btnMultiply);
        buttonPanel.add(btnClear);
        buttonPanel.add(btn0);
        buttonPanel.add(btnEquals);
        buttonPanel.add(btnDivide);

        setLayout(new BorderLayout(5, 5));
        add(resultField, BorderLayout.NORTH);
        add(buttonPanel, BorderLayout.CENTER);

        pack();
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        String buttonText = e.getActionCommand();
        switch (buttonText) {
            case "C":
                operand1 = 0;
                operand2 = 0;
                operator = "";
                isOperatorSelected = false;
                resultField.setText("0");
                break;
            case "+":
            case "-":
            case "*":
            case "/":
                if (isOperatorSelected) {
                    calculate();
                }
                operator = buttonText;
                operand1 = Double.parseDouble(resultField.getText());
                isOperatorSelected = true;
                break;
            case "=":
                if (isOperatorSelected) {
                    calculate();
                    isOperatorSelected = false;
                }
                break;
            default:
                if (isOperatorSelected) {
                    resultField.setText(buttonText);
                    operand2 = Double.parseDouble(buttonText);
                } else {
                    resultField.setText(resultField.getText() + buttonText);
                    operand1 = Double.parseDouble(resultField.getText());
                }
                break;
        }
    }

    private void calculate() {
        operand2 = Double.parseDouble(resultField.getText());
        switch (operator) {
            case "+":
                operand1 += operand2;
                break;
            case "-":
                operand1 -= operand2;
                break;
            case "*":
                operand1 *= operand2;
                break;
            case "/":
                operand1 /= operand2;
                break;
        }
        resultField.setText(Double.toString(operand1));
    }

    public static void main(String[] args) {
        new Calculator();
    }
}

该计算器界面包含一个文本框和一组按钮，用户可以通过点击按钮来输入数字和运算符，计算器支持加、减、乘、除四种基本运算，以及清除操作和等于操作。在用户输入数字和运算符的过程中，计算器会动态地更新文本框中的内容，用户点击等于操作后，计算器会根据之前的输入进行计算，并将计算结果显示在文本框中。

package test; import java.awt.*; import javax.swing.*; import java.awt.event.*; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JButton; import java.awt.BorderLayout; import java.awt.GridLayout; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.util.Random; public class Test3{ public static void main (String args[]) { Win win=new Win(); win.setTitle("输入序列号"); win.setBounds(10,10,460,360); } } class Police implements KeyListener,FocusListener{ public void keyPressed(KeyEvent e) { JTextField t=(JTextField)e.getSource(); if (t.getCarePosition()>=6) t.transferFocus(); } public void keyTyped(KeyEvent e) {} public void keyReleased(KeyEvent e) {} public void focusGained(FocusEvent e) { JTextField text=(JTextField)e.getSource(); text.setText(null); } public void focusLost(FocusEvent e){} } class Win extends JFrame { JTextField text[]=new JTextField[3]; Police police; JButton b; Win() { setLayout(new FlowLayout()); police = new Police(); for(int i=0;i<3;i++) { text[i]=new JTextField(7); text[i].addKeyListener(police); //监视键盘事件 text[i].addFocusListener(police); add(text[i]); } b=new JButton("确定"); add(b); setVisible(true); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); text[0].requestFocusInWindow(); } }哪里有错误

代码的缩进格式不够规范，需要进行调整。此外，代码中的一些注释也需要进行调整，以保证清晰易读。以下是修改后的代码：

package test;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.Random;

public class Test3{
    public static void main (String args[]) {
        Win win=new Win();
        win.setTitle("输入序列号");
        win.setBounds(10,10,460,360);
    }
}

class Police implements KeyListener,FocusListener{
    public void keyPressed(KeyEvent e) {
        JTextField t=(JTextField)e.getSource();
        if (t.getCarePosition()>=6)
            t.transferFocus();
    }
    public void keyTyped(KeyEvent e) {}
    public void keyReleased(KeyEvent e) {}
    public void focusGained(FocusEvent e) {
        JTextField text=(JTextField)e.getSource();
        text.setText(null);
    }
    public void focusLost(FocusEvent e){}
}

class Win extends JFrame {
    JTextField text[]=new JTextField[3];
    Police police;
    JButton b;

    Win() {
        setLayout(new FlowLayout());
        police = new Police();
        for(int i=0;i<3;i++) {
            text[i]=new JTextField(7);
            text[i].addKeyListener(police); //监视键盘事件
            text[i].addFocusListener(police);
            add(text[i]);
        }
        b=new JButton("确定");
        add(b);
        setVisible(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        text[0].requestFocusInWindow();
    }
}