activelabel.java

来自「The Definitive Guide to Java Swing, Thir」· Java 代码 · 共 11 行

import javax.swing.*;

public class ActiveLabel implements UIDefaults.ActiveValue {
  private int counter = 0;

  public Object createValue(UIDefaults defaults) {
    JLabel label = new JLabel(""+counter++);
    return label;
  }
}