How Does Java's String Pool Handle Strings Created with the `new` Keyword?

Java's String Pool Explorations

Consider the following code:

String first = "abc";
String second = new String("abc");

Question 1: String Pool Usage with New Keyword

When Java initializes second with the new String() constructor, does it create an entirely new abc String instance?

Answer: Yes, using new ensures the creation of a new String object.

Question 2: Heap and String Pool Storage

Will the newly created String instance (from the new keyword) be stored in the regular heap or the String pool?

Answer: All objects, including String objects, reside on the heap. The String pool is not a separate memory area; it's a cache-like mechanism.

Question 3: String Pool Counts

How many instances of the "abc" String will end up in the String pool?

Answer: Generally, when you create immutable String literals, Java automatically places them in the String pool. However, in this specific scenario:

• first will be assigned a reference to the abc String from the String pool.
• second, created with new String("abc"), will create a separate String object, which will not be stored in the String pool.

Therefore, in this case, only one "abc" String instance will exist in the String pool.

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