How to check if a string contains the characters from another string in Java? -


this question has answer here:

i using java 8. suppose have 2 strings a=helloworld , b=howareyou respectively. want find out matching characters of string b string along position in b. in example matching characters h,e,o,w,r , r 5th character in string b. don't want find if substring or not. want check if characters of 1 string present in string or not. there way that? below java code.

public class charcheck { public static void main(string[] args) {     string = "helloworld";     string b = "howareyou";      char st = containsany(a, b);      system.out.println(st+", "); }  private static char containsany(string str1, string str2) {     if (str1 == null || str1.length() == 0 || str2 == null || str2.length() == 0) {         if (str1 == null || str1.length() == 0) {             return 'x';         }     }     (int = 0; < str1.length(); i++) {         char ch = str1.charat(i);         (int j = 0; j < str2.length(); j++) {             if (str2.charat(i) == ch) {                 return ch;             }         }     }     return 'x';    } }

im not going implement solution i'll give pusedocode.

for each letter1 in string1       each letter2 in string2            if letter1 letter2 print position

so know need nested loop , comparison, becomes bit more complicated if want unique duplicates i'll leave rest


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