Strings in Java Part3

How are strings stored in memory?

As we know that string can be created via 2 ways i.e by using sting literal (implicit) or by creating a string object using a new keyword.

STRING POOL

• Whenever a string is created via literal, the value is stored in special memory string pool.
• JVM looks if there is value is present on the string pool, the same value is allocated to the new string literal
• String pool will increase the memory efficiency and better performance

String s1 = "Hello";             // String literal

String s2 = "Hello";             // String literal

String s3 = s1;                   // same reference

STRING HEAP

• Whenever a string is created via new keyword, the value is stored in string heap.
• Each string object in a heap has its own storage
• There is no sharing of storage in heap even if two string have same content

String s4 = new String("Hello");  // String object

String s5 = new String("Hello");  // String object