public class 获取两个字符串中最大的相同子串 {    public static void main(String[] args) {        String a="abcwerthelloadcedf";        String b="cdhelloesadcedf";        String c=getSonString(a,b);        System.out.println(c);    }    private static String getSonString(String a, String b) {        String max=null;        String min=null;        String temp="";        if (a.length()>b.length()) {             max=a;             min=b;        }else {             max=b;             min=a;        }        for (int i = 0; i <min.length(); i++) {            for (int j = 0; j <=i; j++) {                String substring = min.substring(j, min.length()-i+j);//从小的字符串开始，从左向右移位比较                if (max.contains(substring)) {                    if(temp.length()<substring.length()) {                        temp=substring;                    }                }            }                    }                return temp;    }}