如何在 Java 中将 ScrollBar 添加到 JList?
java 8object oriented programmingprogramming更新于 2025/9/5 23:40:17
让我们首先设置一个 JList 并添加项目 −
List<String> myList = new ArrayList<>(10);
for (int index = 0; index < 20; index++) {
myList.add("List Item " + index);
}
现在，我们将上面的列表设置为新列表 −
final JList<String> list = new JList<String>(myList.toArray(new String[myList.size()]));
现在，将 ScrollBar 设置为 JList −
JScrollPane scrollPane = new JScrollPane(); scrollPane.setViewportView(list); list.setLayoutOrientation(JList.VERTICAL);
以下是将 ScrollBar 添加到 JList 的示例 −
示例
package my;
import java.awt.BorderLayout;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
public class SwingDemo {
public static void main(String[] args) {
JPanel panel = new JPanel(new BorderLayout());
List<String> myList = new ArrayList<>(10);
for (int index = 0; index < 20; index++) {
myList.add("List Item " + index);
}
final JList<String> list = new JList<String>(myList.toArray(new String[myList.size()]));
JScrollPane scrollPane = new JScrollPane();
scrollPane.setViewportView(list);
list.setLayoutOrientation(JList.VERTICAL);
panel.add(scrollPane);
JFrame frame = new JFrame("Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(panel);
frame.setSize(500, 250);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
这将产生以下输出 −
