CMD命令窗口运行Java桌面程序

1：命令行运行Java桌面程序

a、打开cmd命令窗口进入JavaDesk.java文件所在目录

b、运行javac JavaDesk.java命令编译文件，此时在该目录下将会生成JavaDesk.class等相关文件

c、再运行java JavaDesk命令即可运行窗口程序

2：JavaDesk.java文件源代码

import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * 主要实现功能：实现一个学生选课的图形界面
 */
public class JavaDesk extends JFrame {

    // 定义组件
    private static final long serialVersionUID = 1L;
    private JPanel contentPane;
    private JTextField tfName, tfNum, allInfo;
    private JRadioButton rb1, rb2;
    private JCheckBox cb1, cb2, cb3;
    private JComboBox<String> t1, t2, t3;

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    JavaDesk frame = new JavaDesk();     // 创建一个窗口
                    frame.setVisible(true);                                    // 让该窗口实例可见
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
//      JavaDesk frame=new JavaDesk();
//      frame.setVisible(true);
    }

    /**
     * 窗口属性的设置，内部组件的初始化
     */
    public JavaDesk() {
        setTitle("选课ing......");                           // 标题
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     // 设置关闭时推出JVM
        setSize(500, 400);                                   // 设置窗口大小
        setLocationRelativeTo(null);                        // 设置窗体居中
        contentPane = new JPanel();                           // 内容面板
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        contentPane.setLayout(new BorderLayout(0, 0));      // 设置布局
        setContentPane(contentPane);
        JPanel panel = new JPanel(new GridLayout(5, 1, 5, 10));  // 5行1列的表格布局
        panel.setBorder(new TitledBorder(null, "", TitledBorder.LEADING, TitledBorder.TOP, null, null));
        contentPane.add(panel, BorderLayout.CENTER);          // 给panel添加边框
        // 第一行
        JPanel panel_1 = new JPanel();
        panel.add(panel_1);
        JLabel label = new JLabel("姓名");
        panel_1.add(label);
        tfName = new JTextField();
        panel_1.add(tfName);
        tfName.setColumns(10);
        JLabel label_2 = new JLabel("学号");
        panel_1.add(label_2);
        tfNum = new JTextField();
        tfNum.setColumns(10);
        panel_1.add(tfNum);
        rb1 = new JRadioButton("男");
        panel_1.add(rb1);
        rb1.setSelected(true);                               // 设置单选按钮中，默认选中的按钮
        rb2 = new JRadioButton("女");
        panel_1.add(rb2);
        ButtonGroup bts = new ButtonGroup();                   // 单选按钮需要加入到同一个ButonGroup中才能生效
        bts.add(rb1);
        bts.add(rb2);
        // 第二行
        JPanel panel_2 = new JPanel();
        panel.add(panel_2);
        cb1 = new JCheckBox("高等数学");
        panel_2.add(cb1);
        t1 = new JComboBox<String>();
        t1.setModel(new DefaultComboBoxModel<String>(new String[]{"林老师", "赵老师", "孙老师"}));
        panel_2.add(t1);
        // 第三行
        JPanel panel_3 = new JPanel();
        panel.add(panel_3);
        cb2 = new JCheckBox("世界经济");
        panel_3.add(cb2);
        t2 = new JComboBox<String>();
        t2.setModel(new DefaultComboBoxModel<String>(new String[]{"张老师", "刘老师"}));
        panel_3.add(t2);
        //第四行
        JPanel panel_4 = new JPanel();
        panel.add(panel_4);
        cb3 = new JCheckBox("音乐赏析");
        panel_4.add(cb3);
        t3 = new JComboBox<String>();
        t3.setModel(new DefaultComboBoxModel<String>(new String[]{"王老师", "周老师"}));
        panel_4.add(t3);
        // 第五行
        JPanel panel_5 = new JPanel();
        panel.add(panel_5);
        JButton jbOk = new JButton("确定");
        panel_5.add(jbOk);
        JButton jbRest = new JButton("重填");
        panel_5.add(jbRest);
        // 添加选课信息
        JPanel panelSouth = new JPanel();
        contentPane.add(panelSouth, BorderLayout.SOUTH);
        JLabel labe = new JLabel("选课信息");
        labe.setHorizontalAlignment(SwingConstants.LEFT);
        panelSouth.add(labe);
        allInfo = new JTextField();
        allInfo.setColumns(30);
        panelSouth.add(allInfo);
        //添加标题
        JPanel panelNorth = new JPanel();
        contentPane.add(panelNorth, BorderLayout.NORTH);
        JLabel labelTitle = new JLabel("学生选课系统");
        labelTitle.setForeground(Color.DARK_GRAY);
        labelTitle.setFont(new Font("宋体", Font.BOLD, 20));
        panelNorth.add(labelTitle);

        // 给确定按钮添加事件处理代码
        jbOk.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                StringBuilder info = new StringBuilder();
                String name = tfName.getText();
                String num = tfNum.getText();
                String sex;
                if (rb1.isSelected()) {
                    sex = "男";
                } else {
                    sex = "女";
                }
                info.append(name + num + sex);
                if (cb1.isSelected()) {
                    String c = cb1.getText();
                    String t = t1.getSelectedItem().toString();
                    info.append(":" + c + t);
                }
                if (cb2.isSelected()) {
                    String c = cb2.getText();
                    String t = t2.getSelectedItem().toString();
                    info.append("," + c + t);
                }
                if (cb3.isSelected()) {
                    String c = cb3.getText();
                    String t = t3.getSelectedItem().toString();
                    info.append("," + c + t);
                }
                allInfo.setText(info.toString());                     // 把学生信息和选课信息放到文本框中
            }
        });

        // 给重填按钮设置事件处理代码
        jbRest.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {

                tfName.setText("");
                tfNum.setText("");
                rb1.setSelected(true);
                cb1.setSelected(false);
                t1.setSelectedIndex(0);
                cb2.setSelected(false);
                t2.setSelectedIndex(0);
                allInfo.setText("");
            }
        });
    }
}

 

本文地址：https://blog.csdn.net/yfr5734/article/details/112273439