Why runnable interface is used in java?
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What is the difference between a loader and a compiler?
explain copyonwritearraylist and when do we use copyonwritearraylist?
Why a dead thread occurs?
What is a flag and how does it work?
What are the different types of inheritance in java?
What is boolean keyword in java?
Explain how can you debug the Java code?
if u open login & logout ,how can udisplay the timelogin & logout members ?
What is default constructors?
What is set in java?
What is Hierarchy of exception?
Differentiate between run time error and syntax error.