下拉框、列表框、文本框、列表框、文本域

下拉框

public class TestComboboxDemo extends JFrame {
    public TestComboboxDemo(){
        Container contentPane = this.getContentPane();

        JComboBox<Object> status = new JComboBox<>();

        status.addItem(null);
        status.addItem("正在热映");
        status.addItem("已下架");
        status.addItem("即将上映！");
        
        contentPane.add(status);
        
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setVisible(true);
        this.setSize(500,350);

    }

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

列表框

public class TestComboboxDemo extends JFrame {
    public TestComboboxDemo(){
        Container contentPane = this.getContentPane();

        //生成列表的内容 稀疏数组
        String[] contents = {"1","2","3"};
        //列表中需要放内容
        JList jList = new JList(contents);

        contentPane.add(jList);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setVisible(true);
        this.setSize(500,350);

    }

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

文本框:

public class TestTextDemo01 extends JFrame {
    public TestTextDemo01(){
        Container contentPane = this.getContentPane();
        contentPane.setLayout(null);
        JTextField jTextField1 = new JTextField("hello");
        JTextField jTextField2 = new JTextField("world",20);
        jTextField1.setBounds(20,20,50,50);
        jTextField2.setBounds(80,20,50,50);

        contentPane.add(jTextField1);
        contentPane.add(jTextField2);


        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setVisible(true);
        this.setSize(500,350);

    }

    public static void main(String[] args) {
        new TestTextDemo01();
    }
}

密码框：

public class TestTextDemo01 extends JFrame {
    public TestTextDemo01(){
        Container contentPane = this.getContentPane();
        JPasswordField jPasswordField = new JPasswordField();//*****
        jPasswordField.setEchoChar('+');
        
        contentPane.add(jPasswordField);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setVisible(true);
        this.setSize(500,350);

    }

    public static void main(String[] args) {
        new TestTextDemo01();
    }
}

文本域

public class JScrollDemo extends JFrame {
    public JScrollDemo(){
        Container container = this.getContentPane();
        JTextArea jTextArea = new JTextArea(20,50);
        jTextArea.setText("欢迎大家进行学习哦！");

        JScrollPane jScrollPane = new JScrollPane(jTextArea);

        container.add(jScrollPane);
        this.setVisible(true);
        this.setBounds(100,100,300,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

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

配合面板使用

关于GUI的基础技术目前全部结束，接下来做一个小游戏吧！

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