Important Interview Questions of String == and equals | String Code Interview Question | String Interview question cases of ==

Important Interview Questions of String == and equals | String Code Interview Question | String Interview question Test cases 

Here some basic string interview question which has asked by interview. Many interviews you will face this string test scenario which can be asked by the interviewer. If you go all these cases you will able to you know no string double equals questions

 String Code Interview Question

public class StringTestCases {
  public static void main(String[] args) {

   String s = "abcd";
   s.concat("xyz");
   System.out.print("s.concat(xyz) ");
   System.out.println(s); // abcd

   String s1 = new String("abcd");
   String s2 = new String("abcd");
   System.out.print("s1 == s2 ");
   System.out.println(s1 == s2);

   String s3 = "abcd";
   System.out.print("s1 == s3 ");
   // false one object in heap memory and Second in Scp
   System.out.println(s1 == s3);

   String s4 = "abcd";
   System.out.print("s3 == s4 ");
   System.out.println(s3 == s4); // True

   String s5 = "ab" + "cd";
   System.out.print("s4 == s5 ");
   System.out.println(s4 == s5); // True

   String s6 = "ab";
   String s7 = s6 + "cd";
   System.out.print("s4 == s7 ");
   System.out.println(s4 == s7); // false

   final String s8 = "ab";
   String s9 = s8 + "cd";
   System.out.print("s4 == s9 ");
   System.out.println(s4 == s9); // true

   System.out.print("s1 == s9 ");
   System.out.println(s1 == s9); // false

   System.out.print("s3 == s9 ");
   System.out.println(s3 == s9); // true
  }

 }

This is the Output of above code.

Questions of String == equals