What is a default method?
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why java does compile time polymorphism at run time ?
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?
if arraylist size is increased from initial size what is the size of arraylist...suppose initial is 100 , if i add 101 element what is the size...
what is the use of clone() in real time scenario?
What is the use of static methods?
Can a static class implement an interface?
What is binary tree in java?
What are the steps that are followed when two computers connect through tcp?
What is lossy conversion in java?
what is an object class?Explain its methods?
Difference between local and global transaction ?
what is the use of thread?Justify it by project point of view