Question

I have

String newStr = "previous"

After sometime i want to change my string to next. Now can i do

newStr=getNewString(); // Say getNewString return `next`

Arent strings supposed to be immutable.

Any other way i can achieve this? Thanks.

Edit : Take neww instead of new

Answer 1

Arent strings supposed to be immutable.

String are immutable.

References to String don’t have to be immutable.

String s = "hello";
s = "World"; // the reference s changes, not the String.

final String t = "Hi"; // immutable reference
t = "there"; // won't compile.

// immutable reference to a mutable object.
final StringBuilder sb = new StringBuilder();
sb.append("Hi"); // changes the StringBuilder but not the reference to it.
sb = null; // won't compile.