Is there any performance benefit by using a private final static String in java vs using a local string variable that has to get "initialized" every time the method is accessed? I do think that us...

I am learning about reflection in Java. By accident, I discovered the following, for me unexpected behavior. Both tests as written below succeed. class NewInstanceUsingReflection { @Test void tes...

My Question is what's the use of creating string object in string pool as well as on Heap when we declare String as String a = new String("abc"); What is the advantage ? And why not we create stri...

Beware: I'm not trying to compare if the characters are equals. Because I know how to use the String.equals() method. This question is about String reference I was studying for the OCA exam when I...

I was asked in an interview about the number of objects that will be created on the given problem: String str1 = "First"; String str2 = "Second"; String str3 = "Third"; String str4 = str1 + str2 +...

Below is the Javadoc comment for String.intern() method: *Returns a canonical representation for the string object. A pool of strings, initially empty, is maintained privately by the class Stri...

Consider this code: String first = "abc"; String second = new String("abc"); When using the new keyword, Java will create the abc String again right? Will this be stored on the regular he...

After seeing this question and its duplicate a question still remained for me. I get what is and == do and why if I run a = "ab" b = "ab" a == b I get True. The question here would be WH...

If jvm creates string pool for memory optimization, then why it creates new Object each time we create string using new keyword even though it exists in string pool?

Java string pool coupled with reflection can produce some unimaginable result in Java: import java.lang.reflect.Field; class MessingWithString { public static void main (String[] args) { ...

I understood that if a String is initialized with a literal then it is allotted a space in String Pool and if initialized with the new Keyword it create a String's object. But I am confused with a ...

What will happen if there are many String literals on String Pool and it runs out of memory. Does it grow its size, if yes how? If not, what will happen if i try to create more String literals?

I am preparing for the OCA SE 7 exam, and some of these questions are really (!) tricky. In one of the books Im using I found an error I think, so I would like to confirm the following please... ...

Is there any way to check, currently which Strings are there in the String pool. Can I programmatically list all Strings exist in pool? or Any IDE already have this kind of plugins ?

I need a "string pool" object into which I can repeatedly insert a "sequence of chars" (I use this phrase to mean "string" without confusing it with std::string or a C string), obtain a pointer to ...

I've just been inspecting the following in gdb: char *a[] = {"one","two","three","four"}; char *b[] = {"one","two","three",&quo...