金钱数字转换成美式的有分隔符的样子

public static String formatLong(Long value) {

String str = value.toString();

StringBuffer strb = new StringBuffer(str);

StringBuffer outStr = new StringBuffer();

int start =0;

int len = strb.length();

int ys=len%3;

while((start+1)<=len){

if(ys==0){

ys=3;

}

outStr.append(strb.subSequence(start, ys+start));

outStr.append(",");

start = start + ys;

ys=3;

 

}

if (outStr.charAt(outStr.length() - 1) == ',') {

outStr = new StringBuffer(outStr.subSequence(0,

(outStr.length() - 1)));

}

return outStr.toString();

}