Why there are some null interface in JAVA? What does it mean? Give some null interface in JAVA?
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if the memory capacity is 700 presently occupied by process is 690. then another process request space(40) how this situation handled in java.
What is the purpose of garbage collection in java? When is it used?
How many bits does a boolean take?
What is a nested class?
What is a flag value?
What are the approaches that you will follow for making a program very efficient?
Can a constructor call the constructor of parent class?
Why is a string immutable?
Write a java program to count the number of words present in a string?
Explain about main() method in java ?
When is an object subject to garbage collection?
What is singleton class in java and how can we make a class singleton?