java - String's hascode value can be changed?

I need one help to understand String class, I wrote a program where i have created one string with new keyword and other one with literal, below is program. here my confusion is why string s (literal one) got changed , as string is immutable so only value have to change why hashcode got changed. is it because of intern() method, Please help me to understand this.

    String s = "xyz";
 String s1 = new String("abc"); 

System.out.println(s.hashCode()+"--> hashcode before literal string"); 

System.out.println(s1.hashCode()+"--> hashcode before new keyword string"); 

System.out.println(s+"--> before case S value "); 
s = s1; 
System.out.println(s+ "--> after case S value"); 

System.out.println(s.hashCode()+"--> hashcode after literal string"); 


System.out.println(s1.hashCode()+"--> hashcode after new keyword string");

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the output of this is

119193--> hashcode, before literal string

96354--> hashcode, before new keyword string

xyz--> before case S value

abc--> after case S value

96354--> hashcode, after literal string

96354--> hashcode, after new keyword string