如何在 Java Swing JList 中显示行数
java 8object oriented programmingprogramming
使用 JList getVisibleRowCount() 方法显示 JList 中的行数:
String sports[]= {"Tennis", "Archery","Football","Fencing","Cricket","Squash","Hockey","Rugby"};
Jlist list = new JList(sports);
int rowCount = list.getVisibleRowCount();
System.out.println("Row Count = "+rowCount);
以下是在 JList 中显示行数的示例:
示例
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
class SwingDemo extends JFrame {
static JFrame frame;
static JList list;
public static void main(String[] args) {
frame = new JFrame("JList Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
String sports[]= {"Tennis", Archery","Football","Fencing","Cricket","Squash","Hockey","Rugby"};
list = new JList(sports);
int rowCount = list.getVisibleRowCount();
System.out.println("Row Count = "+rowCount);
JScrollPane scrollPane = new JScrollPane(list);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
frame.add(scrollPane);
frame.getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
frame.setSize(400,100);
frame.setVisible(true);
}
}
输出
控制台中的输出将显示总行数:
Row Count = 8
