Extend Thread or Runnable Which Is Best Practice

In the first approach Our class always extends Thread class. Its usually a better idea to implement Runnable.

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Hence we are missing Inheritance benefits.

. When extending the Thread class were not overriding any of its methods. Extending Thread VS implementing Runnable. Java does not allow multiple inheritance so if you extend from thread you can not extend from any other class.

Both approaches have their pros and cons and there is a situation when extending Thread is logical but in most cases implementing Runnable is the better option. Best Object Oriented Design Practice. In an interview I have been asked a questiongive one situation where you will prefer to create a thread using extending a thread class over implementing Runnable interface.

A user must extend thread class only if it wants to override the other methods in Thread class. Creating an implementation of Runnable and passing it to the Thread class utilizes composition and not inheritance which is more flexible. So implementing Runnable will be the best object oriented design practice.

In the second approach while implementing Runnable interface we can extends any other class. Because it separates the task from the runner. By implementing Runnable multiple threads can share an instance of your work.

By extending Thread class. However one significant difference between implementing Runnable and extending Thread is that by extending Thread each of your threads has a unique object associated with it whereas implementing Runnable many threads can share the same object instance. By Implementing Runnable in our target class we can still extend from other class.

In this way for every one thread creation we need to create our Thread class object and this will consume more memory. Implements Runnable makes. There is no chance of extending any other class.

It depends but as much as possible we must make use of Runnable interface We must try to extend a class only when we want to override some behavior. If you only want to specialize run method then implementing Runnable is a better option. Consider here that Runnable object represents a.

Implementing Runnable makes your code loosely coupled. Examples of creating threads in java using extending Thread class and Runnable Interface. Lets see the difference between both the approaches.

This is a clear violation of IS-A Thread principle. There has been a good amount of debate on which is better way to create and start a thread. When you implements Runnable it shares the same object to multiple threads.

Delegation when it satisfies the requirements is a more flexible solution than specialization. Runnable is a functional interface which is used to create a thread. 3 If we create a class by.

Instead we override the method of Runnable which Thread happens to implement. Implementation of Runnable has the advantage and in some cases the only possible option of allowing the implementation to extend another class. If you extended Thread youd have to create a new instance of your work for each thread.

When you extends Thread class each of your thread creates unique object and associate with it. Thread is a class. In OOPs object oriented programming extending a class means modifying or improving the existing class.

If you extended Thread youd. If you are not modifying the class then it is not a good practice to extend it. In implements Runnable we are creating a different Runnable class for a specific behavior It gives us the freedom to reuse the specific behavior whenever required.

While its true that overriding run is in some sense extending Threads behavior its more in keeping with good OO practice to derive a Thread subclass only if you need to modify some more basic aspect. Extending Thread will make your code tightly coupled. When we extend a class the two classes are very tightly coupled to each other.

I had answered Java cannot support the mltiinheritenceif use the Thread class to create a thread at the same time we cant extends the any other class. Before answering the differences lets have a brief note and tips that will help you answer the best. These subprocesses are known as threads.

By implementing Runnable interface. It has multiple methods including start and run It has only abstract method run 3. It makes our class tightly coupled with Thread.

When you implements Runnable you can save a space for your class to extend any other class in future or now. The following example will help you to understand more clearly. However one significant difference between implementing Runnable and extending Thread is that by extending Thread each of your threads has a unique object associated with it whereas implementing Runnable many threads can share the same object instance.

It is easy to extend the Thread class but it is not a better Object-Oriented Programming practice. Extends Thread contains both thread and specific behavior code. However the significant difference is.

It is used to create a thread. However if you implement Runnable it doesnt have to be. If you extend Thread then the action youre doing is always going to be in a thread.

Extending Thread class introduces tight coupling as the class contains code of Thread class and also the job assigned to the thread. Each thread creates a unique object and gets associated with it. By implementing Runnable Task and Thread executor are loosely coupled.

If you are not improving the class then it is not a good practice to extend it. In object oriented programming OOP extending a class means modifying or improving the existing class. By implementing Runnable multiple threads can share an instance of your work.

Hence once thread completes execution it can not be restart again. A process is divided into multiple sub-processes to perform multiple tasks at the same time. Instantiating a thread can be done by implementing the Runnable interface or by extending the Thread Class.

You can run it in a thread or pass it to some kind of executor service or just pass it around as a. The following example will help you to understand more clearly. By implementing Runnable interface we need to create only one runnable instance and pass it to 3 thread objects to run it.

Answer for difference between extending thread class and Runnable interface in java should contains clear differences with examples. Multiple threads share the same objects. Whereas by extending Thread class we need to create 3 different objects of our class to run 3 threads.

To implement Runnable will be the best object oriented design practice. It is particul Browse Library. To any type of runner either a thread or any executors.

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