Here you can find the source of setLockImage(BufferedImage image)
public static void setLockImage(BufferedImage image)
//package com.java2s; //License from project: Open Source License import java.awt.image.BufferedImage; public class Main { private static BufferedImage lockImage = null; /**/*from w ww . j a v a 2 s. c om*/ * Sets a small lock image to use when creating cycle buttons. */ public static void setLockImage(BufferedImage image) { lockImage = image; } }