Java jlist basic tutorial and examples

I can provide you with a basic tutorial and examples for using JList in Java.

JList is a Swing component that provides a list of items to the user. You can use JList to display a list of items, and the user can select one or more items from the list.

Here's an example of creating a simple JList:

import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class MyList extends JFrame {

  public MyList() {
    super("List Example");
    String[] items = {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5"};
    JList<String> list = new JList<>(items);
    JScrollPane scrollPane = new JScrollPane(list);
    JPanel panel = new JPanel();
    panel.add(scrollPane);
    add(panel);
    pack();
    setLocationRelativeTo(null);
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

  public static void main(String[] args) {
    new MyList();
  }
}
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In this example, we create a new JList with an array of strings representing the items to display. We then create a new JScrollPane with the JList, add the JScrollPane to a JPanel, and add the JPanel to the JFrame using add(). We call the pack() method to resize the JFrame to fit its contents, center it on the screen using setLocationRelativeTo(), make it visible with setVisible(true), and set the default close operation to exit the application when the JFrame is closed.

When you run this program, it will display a window with a list of items.

Here's an example of creating a JList with a custom list model:

import java.util.ArrayList;
import java.util.List;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class MyList extends JFrame {

  public MyList() {
    super("List Example");
    List<String> items = new ArrayList<>();
    items.add("Item 1");
    items.add("Item 2");
    items.add("Item 3");
    items.add("Item 4");
    items.add("Item 5");
    DefaultListModel<String> model = new DefaultListModel<>();
    for (String item : items) {
      model.addElement(item);
    }
    JList<String> list = new JList<>(model);
    JScrollPane scrollPane = new JScrollPane(list);
    JPanel panel = new JPanel();
    panel.add(scrollPane);
    add(panel);
    pack();
    setLocationRelativeTo(null);
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

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

In this example, we create a new JList with a custom DefaultListModel that we populate with an ArrayList of items. We then add each item to the model using addElement() and create a new JList with the model. We create a new JScrollPane with the JList, add the JScrollPane to a JPanel, and add the JPanel to the JFrame using add(). We call the pack() method to resize the JFrame to fit its contents, center it on the screen using setLocationRelativeTo(), make it visible with setVisible(true), and set the default close operation to exit the application when the JFrame is closed.

When you run this program, it will display a window with a list of items.

I hope this helps you get started with using JList in Java!