如何在JLabel上顯示多個圖像

Question

這是一個類項目，我需要顯示多個圖像，但它只打印出最後一個label.setIcon。我該怎麼辦？

package Rectangle; 
import java.awt.*; 
import javax.swing.*; 

public class Rectangle extends JFrame { 


public Rectangle(String arg) { 

    JPanel panel = new JPanel(); 
    panel.setBackground(Color.BLACK); 
    ImageIcon icon = new ImageIcon(this.getClass().getResource("1676858-livingforest2011.jpg")); 
    ImageIcon icon1 = new ImageIcon(this.getClass().getResource("20496aa0.gif")); 
    ImageIcon icon2 = new ImageIcon(this.getClass().getResource("akuma-ragingdemon-yes.gif")); 
    JLabel label = new JLabel(); 
    label.setIcon(icon2); 
    label.setIcon(icon1); 
    label.setIcon(icon); 
    panel.add(label); 
    this.getContentPane().add(panel); 

    } 
     public static void main(String[] args) { 
     Rectangle forestFrame = new Rectangle(args.length == 0 ? null : args[3]); 
     forestFrame.setSize(1698,770); 
     forestFrame.setVisible(true); 
     forestFrame.setVisible(true); 

    } 
} 

Answer 1

這是因爲JLabel只能容納一個Image。爲了解決您的問題，您可以爲每個圖像創建一個帶有3個標籤的JPanel。查看下一個示例：

import javax.swing.ImageIcon; 
import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.JPanel; 

public class Example extends JPanel { 

    public Example() { 
     ImageIcon icon = new ImageIcon(this.getClass().getResource(IMAGE1)); 
     ImageIcon icon1 = new ImageIcon(this.getClass().getResource(IMAGE2)); 
     ImageIcon icon2 = new ImageIcon(this.getClass().getResource(IMAGE3)); 
     JLabel label1 = new JLabel(icon); 
     JLabel label2 = new JLabel(icon1); 
     JLabel label3 = new JLabel(icon2); 

     add(label1); 
     add(label2); 
     add(label3); 
    } 

    public static void main(String[] args) { 
     JFrame frame = new JFrame(); 

     frame.add(new Example()); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.pack(); 
     frame.setVisible(true); 
    } 
} 

IMAGE(1,2,3) - 是您的圖片。