列表

列表

• 下拉框

  import javax.swing.*;
  import java.awt.*;
  
  public class TestComboboxDemo01 extends JFrame {
      public TestComboboxDemo01() {
          Container container = this.getContentPane();
  
          JComboBox status = new JComboBox();
          status.addItem(null);
          status.addItem("火热上映");
          status.addItem("已下架");
          status.addItem("即将上映");
  
          container.add(status);
          this.setVisible(true);
          this.setSize(300,200);
          this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
      }
      public static void main(String[] args) {
          new TestComboboxDemo01();
      }
  }

• 列表框

import javax.swing.*;
import java.awt.*;
import java.util.Vector;

public class TestComboboxDemo02 extends JFrame {
    public TestComboboxDemo02() {
        Container container = this.getContentPane();

        //生成列表的内容
//        String[] contents = {"1","2","3"};
        
        Vector contents = new Vector();
        //列表中需要放入内容
        JList list = new JList(contents);
        contents.add("何金银");
        contents.add("乌蝇哥");
        contents.add("大师兄");
        container.add(list);

        this.setVisible(true);
        this.setSize(300,200);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new TestComboboxDemo02();
    }
}

应用场景

下拉框，选择地区，或者一些单个选项

列表框，展示信息，一般是动态扩容！