COREJAVA

COREJAVA Subjective Questions And Answers


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Java Interview Questions And Answers

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ThreadPools are useful when you need to limit the number of threads running in your application. Built in thread pools in the java.util.concurrent package.

Thread pools address two different problems :-
They usually provide improved performance when executing large numbers of asynchronous tasks, due to reduced per-task invocation overhead, and they provide a means of bounding and managing the resources, including threads, consumed when executing a collection of tasks. 


Each ThreadPoolExecutor also maintains some basic statistics, such as the number of completed tasks.

Thread Pools are useful when you need to limit the number of threads running in your application. Built in thread pools in the java.util.concurrent package.

Thread pools address two different problems: they usually provide improved performance when executing large numbers of asynchronous tasks, due to reduced per-task invocation overhead, and they provide a means of bounding and managing the resources, including threads, consumed when executing a collection of tasks. 


Each ThreadPoolExecutor also maintains some basic statistics, such as the number of completed tasks.

A constructor is a member function of a class that is used to create objects of that class. 

It has the same name as the class itself, has no return type, and is invoked using the new operator.


 A method is an ordinary member function of a class. It has its own name, a return type (which may be void), and is invoked using the dot operator.

A constructor is a member function of a class that is used to create objects of that class. 

It has the same name as the class itself, has no return type, and is invoked using the new operator.


 A method is an ordinary member function of a class. It has its own name, a return type (which may be void), and is invoked using the dot operator.

instanceof operator is used to check whether the object is an instance of the class or subclass or interface.

The instanceof is also known as type comparison operator because it compares the instance with type.
It returns either true or false.
instanceof operator with variable having null value, it returns false


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Java Objective Questions And Answers

Java Objective Questions And Answers

Java Interview Questions And Answers

Java Interview Questions And Answers


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