What is Java String Pool?

hi … excellent post … one correction - “we force String class to create a new String object and then place it in the pool.” here, new operator creates object in Java heap, not in pool.

- abhay agarwal

Where the string stored.Means location of string where it stored.

- Ridham Shah

Could you post some example on intern() method.

- siddu

https://stackoverflow.com/questions/17489250/how-can-a-string-be-initialized-using/17489410#17489410

- Vikash

I have one confusion, when we create a new String Object like String s = new String (“abc”); As far as I know, this will create a new String Object in Heap and also abc will go in String constant pool and s will point value exists in string constant pool… which means the value already exists in String Constant Pool, so what will intern do in this case? Also String Constant Pool is not a part of Java Heap Memory…?

- kunal

How come String Pool has two Cat literals and is Stringpool a part of Heap?

- Ganesh

String s = “ashish”; String b = new String(“ashish”); b.intern(); System.out.println(s==b); if string pool is manged then why not string ‘s’ reference is returned on b.intern() to b. It is printing false which means their reference are not same.

- Ashish

If for example: String str1 = “abc”; String str2 = new String(“def”); Then, Case 1: String str3 = str1.concat(str2) will go in the heap or pool? Case 2: String str4 = str2.concat(“HI”) will go in the heap or pool?

- krishna

public class MainDemo { public void comp() { String s1=“India”; String s2=“India”; String s3=new String(“India”); System.out.println(“== result:” + s1==s2); // false System.out.println(“equals result:” + s1.equals(s2)); // true System.out.println(“****************”); System.out.println(“== result:” + s1==s3); // false System.out.println(“equals result:” + s1.equals(s3)); // true } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub MainDemo obj=new MainDemo(); obj.comp(); } } Question - what is the difference between s1==s2 and s1==s3 , => both returns same result. but in your post s1==s2 is true that is not right result. I have checked this by writing same program in to this post. So plz clear my doubt ??

- sanjaya verma

Thnx for the post. helped to clarify a lot of things

- balinder