Answer Posted / mahi

Yes String cannot be modified because we can not append
another String to existing one.
Example:

1) String string=new String("abc");
2) String s2= string + "hai";

As shown in the above, 2nd line will create one new object
with the value "abchai" so it cannot be modified.

If the same thing if you do with StringBuffer class as
below we can modify

1) StringBuffer str=new StringBuffer("abc");
2) str.append("hai");
Here we can modify existing StringBuffer object - str

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