Explain different states of a thread in java?
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How do you compare two objects?
What do you mean by global variable?
why interfaces are faster than abstract classes?
How many static init can you have?
What is java reflection?
what is polymorhism what is inheritance? what is Abstract n Interface? what if two interfaces have same method and a concrete class is implementing both the interfaces. Will there be a compilation error? What are mutable and immutable classes? How can u make a class mutable? when will u use dem ...explain with example? what is overriding and overloading? what is garbage collection? what is Thread? how do dey communicate? what are the different ways of implementing ? have u used any messaging technologies? what is synchronization? what are some additions in java 1.5? what are generics? whst is advanced for loop? what is finally block? can u have a try in finally? yes!! can u have a finally in finally? how do you write junits? when is a object eligible for garbage collection?explain? a = null and b has ref to a will b be eligible to be garbage collected? sql questions like diff joins? how do dey work? exception handling? what is marker interface? what is the need??
write SQL command for table employee where print first name or last name start like "A" and who is working in domain(angular js,java,dotnet)
What are the types of literals?
What is off heap memory?
Can we pass a primitive type by reference in java? How
Can we declare a class as static?
What is downcasting?