视频链接：19、下拉框、列表框_哔哩哔哩_bilibilihttps://www.bilibili.com/video/BV1DJ411B75F?p=19&vd_source=b5775c3a4ea16a5306db9c7c1c1486b5

1.下拉框

代码示例

package com.yundait.lesson06;import javax.swing.*;
import java.awt.*;public class TestComboBoxDemo01 extends JFrame {public TestComboBoxDemo01(){Container container = this.getContentPane();//创建下拉框JComboBox jComboBox = new JComboBox();//在下拉框中添加内容jComboBox.addItem(null);jComboBox.addItem("正在热映1");jComboBox.addItem("正在热映2");jComboBox.addItem("正在热映3");jComboBox.addItem("已下架1");jComboBox.addItem("已下架2");jComboBox.addItem("已下架3");jComboBox.addItem("即将上映1");jComboBox.addItem("即将上映2");jComboBox.addItem("即将上映3");//添加下拉框到容器中container.add(jComboBox);this.setVisible(true);this.setSize(600,700);this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new TestComboBoxDemo01();}
}

运行结果：

2.列表框

代码示例：

package com.yundait.lesson06;import javax.swing.*;
import java.awt.*;public class JListDemo extends JFrame {public JListDemo(){Container container = this.getContentPane();String[] contents = {"张三", "李四", "王五", "赵六"};JList jList = new JList(contents);//添加下拉框到容器中container.add(jList);this.setVisible(true);this.setSize(600,700);this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);}public static void main(String[] args) {new JListDemo();}
}

运行结果：