Java and MySQL Base Question
Collection API
Concept of String in Java
Concept of Inheritance
Just ask have you heard about the JDBC and ODBC concept no question but just ask

And from my side, Prepare Well

Question

Java and MySQL  Base Question 
Collection API
Concept of String in Java
Concept of Inheritance
Just ask  have you heard about the JDBC and ODBC concept no question but just ask

And from my side,  Prepare Well

Utilisateur anonyme · Accepted Answer

Ans 1: the most common use object is string object in any project. String object will be immutable

Ans 2: In any project we use approx 90% string object because of immutability concept
and it use String Constant Pool which is specially design for String object only
By they help of SCP it creates a new object when only it required otherwise it use previous one
Also increase performance
Memory utilization

Ans 3: String st = new String ();

Ans 4: because of SCP(String constant Pool)

Utilisateur anonyme · Answer

First Listen the Question  and give them brief about what they actually want from you 
like : 
If they asked like what is String in java
so your answer is 
1) Define String 
2) How is string important in java
3) how you create the String 
4) the rare concept Why String is Immutable in java ?

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