difference between String a; and String a=new String();?
y do v need to assign memory to the variable?
- 2 Answers
- 6274 Views
- I also Faced
- E-Mail Answers
Answer Posted / saroj kumar biswal
String a;
jvm creates a reference & allocates memory for storing hashcode value
String a=new String();
jvm creates a object to String class in heap memory & returns the unique hexadecimal equivalent of that memory location which is stored in reference variable a as hashcode.
We dont need to assign memory to variable.because in java memory management is taken care by jvm automatically.Programmer need not worried about memory allocation issue.But yes jvm allocates memory for variable to store hashcode, if it is a referenced variable.If it is primitive type variable then jvm will not allocate extra memory for that variable.Because primitive types stored in object & there is memory allocated for object by jvm.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
Write a program to print count of empty strings in java 8?
What is the difference between break and continue statements?
Write a program to find the whether a number is an Armstrong number or not?
Realized?
explain different ways of using thread? : Java thread
Explain public static void main(string args[]) in java.
What is java string pool?
Differentiate between static and non-static methods in java.
What are the differences between heap and stack memory in java?
What is parsing in java?
What is the difference between equals() and == in java?
Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example
How to sort array in descending order in java?
What is a constructor overloading in java?
How to create a base64 decoder in java8?
