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Java Threads Interview Questions and Answers

Here you can find Java Threads Interview Questions and Answers.

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In this Java Threads Interview Questions and Answers section you can learn and practice Java Threads Interview Questions and Answers to improve your skills in order to face technical inerview by IT companies. By Practicing these interview questions, you can easily crack any Java Threads interview.

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You no need to worry, we have given lots of Java Threads Interview Questions and Answers and also we have provided lots of FAQ's to quickly answer the questions in the Java Threads technical interview.

Java Threads Interview Questions and Answers

What is Multitasking?

Executing several task simultaneously is called multitasking.

Java Threads Interview Questions and Answers

What is the difference between process-based and Thread-based Multitasking?

Process-based multitasking:- Executing several task simultaneously where each task is a separate independent process such type of multitasking is called process based Multitasking. Example:-While typing a program in the editor we can listen MP3 audio songs. At the same time we download a file from the net.all these task are executing simultaneously and each task is a separate independent program. hence it is process based multitasking. It is best suitable at operating system level. Thread-based multitasking:- Executing several task simultaneously where each task is a separate independent part of the same program is called Thread-based multitasking. and every independent part is called a thread. This type of multitasking is best suitable at programmatic level.

Java Threads Interview Questions and Answers

What is Multithreading and explain its application areas?

1. Executing several thread simultaneously where each thread is a separate independent part of the same program is called multithreading. 2. Java language provides inbuilt support for multithreading by defining a reach library, classes and interfaces like Thread, ThreadGroup, Runnable etc. 3. The main important application area of multithreading are video games implementation, animation development, multimedia graphics etc.

Java Threads Interview Questions and Answers

What is advantage of Multithreading?

The main advantage of multithreading is reduces response time and improves performance of the system.

Java Threads Interview Questions and Answers

When compared with C++ what is the advantage in Java with respect to Multithreading?

Java language provides inbuilt support for multithreading by defining a reach library, classes and interfaces like Thread, ThreadGroup, Runnable etc. But in c++ there is no inbuilt support for multithreading.

Java Threads Interview Questions and Answers

In how many ways we can define a Thread? Among extending Thread and implementing Runnable which is recommended?

We can define a Thread in the following two ways: by extending Thread class or by implementing Runnable interface. Among the two ways of defining a thread implementing Runnable mechanism is always recommended. In the first approach as our Thread class already extending Thread there is no chance of extending any other. Hence, we missing the key benefit of oops(inheritance properties).

Java Threads Interview Questions and Answers

What is the difference between t.start() and t.run() method?

In the case of t.start() method, a new thread will be created which is responsible for the execution of run() method. But in the case of t.run() method no new thread will be created main thread executes run() method just like a normal method call.

Java Threads Interview Questions and Answers

Explain about Thread Scheduler?

If multiple threads are waiting for getting the chance for executing then which thread will get chance first decided by Thread Scheduler. It is the part of JVM and its behavior is vendor dependent and we can’t expect exact output.Whenever the situation comes to multithreading the guarantee behavior is very- very low.

Java Threads Interview Questions and Answers

If we are not overriding run() method what will happened?

If we are not overriding run() method then Thread class run() method will executed which has empty implementation and hence we will not get any output.

Java Threads Interview Questions and Answers

Is overloading of run() method is possible?

Yes, we can overload run() method but Thread class start() method always invokes no-argument run() method only. The other run() method we have to call explicitly then only will be executed.

Home InterviewTechnical Interview Questions and AnswersJava Interview QuestionsJava Threads

Java Threads Interview Questions and Answers

  • What is Multitasking?
  • What is the difference between process-based and Thread-based Multitasking?
  • What is Multithreading and explain its application areas?
  • What is advantage of Multithreading?
  • When compared with C++ what is the advantage in java with respect to Multithreading?
  • In how many ways we can define a Thread? Among extending Thread and implementing Runnable which is recommended?
  • What is the difference between t.start() and t.run() method?
  • Explain about Thread Scheduler?
  • If we are not overriding run() method what will happened?
  • Is overloading of run() method is possible?
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