Can we increase size of array?
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How does arraylist work in java?
How GC (Garbage Collector) knows the objects reference is unused.Whether GC removes the unused object Parmanently or it maintains something.
What is the difference between constructor and method?
To the class members how can we provide security?
What is mutable object and immutable object?
How do you sort words in java?
What does the “static” keyword mean? Can you override private or static method in java?
different types of threads?
What is temp in java?
Can we return null in java?
Is ruby built on java?
What is are packages?