What is treeset and treemap in java?
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Which is not Object in Java?
7) Suppose there is Student class like class student { int age; string name; } We want to store these objects in a HashMap. Do we need to override any methods in Student class? If any which ones and why? what if i just override equals or just hashcode? what will be the results in both the cases?
Can you run java program without main method?
What is the += operator called?
Hi Friends, can u give code to convert ArrayList to HashMap and HashMap to ArrayList.
Which is faster call by value or call by reference?
Give differences between Quicksort &Mergesort. When should these sorts be used andwhat is their running time in java?
What is a memory leak in java?
What is the difference between interpreter and compiling ?
What is protected access modifier?
what are the analysis of an object
When we will use an Interface and Abstract class?