Differentiate jar and war files?
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what is actual real time using of oops concepts in projects(Interface,polymorphism.abstraction.........)
If I don't provide any arguments on the command line, then what will the value stored in the string array passed into the main() method, empty or null?
Is java 9 released?
Explain the hierarchy of java exception classes?
What is r in java?
Can a constructor call the constructor of parent class?
What is difference between float and double?
What are the various access specifiers in java?
What are the types of relation?
When you say String is immutable, what do you mean by that? Say I have String s = "Ness" s= s+"Technologies"; What will happen? If the value gets appended, then what is the meaning of immutable here?
What is java argument list?
Differentiate constructor and a method and how are it be used?