让你的JLabel支持显示多行文本

import javax.swing.*;
import javax.swing.plaf.*;
import java.util.*;
public class MyUI extends JFrame{
 
   MultilineLabel label = new MultilineLabel("This is a multible label");
  
   public MyUI(){
      super("caokai");
      getContentPane().add(label);
      pack();
      show();
   }
   public static void main(String <> args){
   
      new MyUI();
   }
}
  
class MultilineLabel extends JTextArea{
   public MultilineLabel(String s){ 
   
     super(s);
   }
   public void updateUI(){
      super.updateUI();
      setLineWrap(true);
      setWrapStyleWord(true);
      setHighlighter(null);
      setEditable(false);
      LookAndFeel.installBorder(this,"Label.border");
      LookAndFeel.installColorsAndFont(this,"Label.background",
                                            "Label.foreground",
                                            "Label.font");
      }
   }