将逗号分隔的字符串 转换成 Byte数组，

package net.okren.java;
import java.util.*;
//将逗号分隔的字符串 转换成 Byte数组，
class GetByte{
	public  byte[] getByte(String str){
		System.out.println("getByte...");
		int wn = 0;
		for(int i = 0; i < str.length(); i++){
			if(str.charAt(i) == ','){wn++;}
		}
		wn++;
		byte[] reByte = new byte[wn];
		for(int i = 0; i < wn; i++){
			if( i != (wn - 1)){
				reByte[i] = (byte) Integer.valueOf(str.substring(0, str.indexOf(",")), 16).intValue();
				str = str.substring(str.indexOf(",") + 1, str.length());
			}else{
				reByte[i] = (byte) Integer.valueOf(str, 16).intValue();
			}
		}
		return reByte;
	}
}

public class JavaTest {
		
	public static void main(String[] args) throws NumberFormatException{
		
		GetByte gb = new GetByte();
		System.out.println("input a string ,,,");
		Scanner in = new Scanner(System.in);
		String line = in.nextLine();
		System.out.println(line);
		byte[] bb = gb.getByte(line);
		for(int i = 0; i < bb.length; i++){
			System.out.println(bb[i]);
		}
	
		
	}
}