In Java, Why String is non-primitive data type?

Question

In Java, we can directly use String to declare a string variable name and specify its value. We do not have to define the string as an array by using new keywor

Answer 1

String str = “This is string literal”;

This is string literal. When you declare string like this, you are actually calling intern() method on String. This method references internal pool of string objects. If there already exists a string value “This is string literal”, then str will reference of that string and no new String object will be created.

String str = new String(“this is string created by new operator”);

This is string object. In this method JVM is forced to create a new string reference, even if “this is string created by new operator” is in the reference pool.