Java正则表达式之group()

public static void main(String[] args)
{

Pattern p = Pattern.compile("(\\d+,)(\\d+)")；
String s = "123,456-34,345";
Matcher m = p.matcher(s);
while(m.find())
{
System.out.println("m.group():"+m.group()); //打印所有

System.out.println("m.group(1):"+m.group(1)); //打印数字的

System.out.println("m.group(2):"+m.group(2)); //打印字母的
System.out.println();
}  

System.out.println("捕获个数:groupCount()="+m.groupCount());
}

m.group():123,456
m.group(1):123,
m.group(2):456