what is difference between
String s=new String("vali");
String s="vali"
- 1 Answers
- 3554 Views
- I also Faced
- E-Mail Answers
Answer / kartik sharma
In case of String s=new String("vali"); , a memory in the heap is allocated to the variable of the class String, and then the value is given to the variable s="vali". Using new operator , we can allocate the memory to the instance of the class.
But in String s="vali" , only the variable s is given the value as vali but there is no permanent memory given to the variable in heap.
| Is This Answer Correct ? | 6 Yes | 2 No |
Hi All, I am new to programming and want to know how can i write a code to take input of 2 numbers from user and swap it without using a temp variable?
What are generic functions and generic classes?
what is the abstract class,interface ,its difference with a programatic eg.? hi,recently i went for an interview they ask me what is abstract class ,interface and its difference I said abstract class contain abstact method ,abstract method is a method with no body.Abstract class cannot be instantiated.Abstract class is a base class it required derived class for the implementation of method. Interface is a syntactical contract that all derived class should follow it define properties ,method,events which are known as member of interface. Then They asked me what is the difference between them. I said abstract class interface 1.abstact class can implement method 1.interface cant 2.abstact class can contain constructor, 2.interface cant destructor 3.abstract class cannot support multiple 3.interface support inheritance etc Then they said some different answer I said dont no. Then they ask me when i should make abstract class for an project and when i should make interface. I said if suppose there is two class which must be having method with different logic then we sholud make abstract class. and if suppose we have two class having method .with different logic then we can make interface . Am i correct with my explaination.if not correct me .please provide me that when should we create abstract class and interface and what is difference .please help me
What does and I oop and sksksk mean?
when to use 'mutable' keyword and when to use 'const cast' in c++
What is the difference between the c++ & java?
How to hide the base class functionality in Inheritance?
Explain virtual inheritance?
What is difference between multiple inheritance and multilevel inheritance?
What is a linked list?
what is runtime polymorphism? For the 5 marks.
Why is oop better than procedural?
STL 
