java实现颜色Color对象和16进制之间的转换

package com.tsxs.test;

import java.awt.Color;

public class TestColor {
	public static void main(String[] args) {
		System.out.println(toHexFromColor(Color.BLUE));
		System.out.println(toColorFromString(toHexFromColor(Color.BLUE)));
	}
	/**
	 * Color对象转换成字符串
	 * @param color Color对象
	 * @return 16进制颜色字符串
	 * */
	private static String toHexFromColor(Color color){
		String r,g,b;
		StringBuilder su = new StringBuilder();
		r = Integer.toHexString(color.getRed());
		g = Integer.toHexString(color.getGreen());
		b = Integer.toHexString(color.getBlue());
		r = r.length() == 1 ? "0" + r : r;
		g = g.length() ==1 ? "0" +g : g;
		b = b.length() == 1 ? "0" + b : b;
		r = r.toUpperCase();
		g = g.toUpperCase();
		b = b.toUpperCase();
		su.append("0xFF");
		su.append(r);
		su.append(g);
		su.append(b);
		//0xFF0000FF
		return su.toString();
	}
	/**
	 * 字符串转换成Color对象
	 * @param colorStr 16进制颜色字符串
	 * @return Color对象
	 * */
	public static Color toColorFromString(String colorStr){
		colorStr = colorStr.substring(4);
		Color color =  new Color(Integer.parseInt(colorStr, 16)) ;
		//java.awt.Color[r=0,g=0,b=255]
		return color;
	}
}

输出结果：

0xFF0000FF
java.awt.Color[r=0,g=0,b=255]