Here you can find the source of toHex(Color color)
public static String toHex(Color color)
//package com.java2s; /*// w ww . j a va 2 s . com * Copyright (C) 2013, Peter Decsi. * * This library is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation, either * version 3 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this library. If not, see <http://www.gnu.org/licenses/>. */ import java.awt.Color; public class Main { public static String toHex(Color color) { return (toHex(color.getRed()) + toHex(color.getGreen()) + toHex(color.getBlue())).toUpperCase(); } private static String toHex(int value) { String str = Integer.toHexString(value); if (str.length() < 2) str = "0" + str; return str; } }