Java获取两个字符串中最大相同子串的方法

class StringTest3{	public static String getMaxSubString(String s1,String s2)	{		String max = "",min = "";		max = (s1.length()>s2.length())?s1: s2;		min = (max==s1)?s2: s1;		//		sop("max="+max+"...min="+min);		for(int x=0; x<min.length(); x++)		{			for(int y=0,z=min.length()-x; z!=min.length()+1; y++,z++)			{				String temp = min.substring(y,z);								sop(temp);				if(max.contains(temp))//if(s1.indexOf(temp)!=-1)					return temp;			}		}		return "";	}	public static void main(String[] args) 	{		String s1 = "ab";		String s2 = "cvhellobnm";		sop(getMaxSubString(s2,s1));	}	public static void sop(String str)	{		System.out.println(str);	}}