Answer by Arasn for "implements Runnable" vs "extends Thread" in Java
1. Extending the thread interface, is like you are making your class to behave as a thread only. You new class will be like a enhanced thread. jshell> public class Test extends Thread{ ...>...
View ArticleAnswer by Pen Lymeng for "implements Runnable" vs "extends Thread" in Java
The main difference between Thread and Runnable is: - Thread is like: Worker (execute Runnable) - Runnable is like: Job (to be executed by Thread)
View ArticleAnswer by bharatj for "implements Runnable" vs "extends Thread" in Java
I would say actual task is decoupled from the thread. We can pass around the task to Thread, Executor framework etc in case of Runnable, whereas with extending Thread task is coupled with thread object...
View ArticleAnswer by Java Main for "implements Runnable" vs "extends Thread" in Java
You can use them jointly Example : public class A implements Runnable{ @Override public void run() { while(true){ System.out.println("Class A is running"); try { Thread.sleep(3000); } catch...
View ArticleAnswer by Pritam Banerjee for "implements Runnable" vs "extends Thread" in Java
Thread class defines several methods that can be overriden by the the extending class. But to create a thread we must override the run() method. Same applies to Runnable as well. However Runnable is a...
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Answer by Raman Gupta for "implements Runnable" vs "extends Thread" in Java
Difference between Extending Thread and Implementing Runnable are:
View ArticleAnswer by rashedcs for "implements Runnable" vs "extends Thread" in Java
By extending the thread class , the derived class can not extend any other base class because java only allow single inheritance. on the contrary, By implementing the runnable interface the class still...
View ArticleAnswer by Peter Rader for "implements Runnable" vs "extends Thread" in Java
In the rare case you only run it once, you should extend Thread because of DRY. If you call it multiple times, you should implement Runnable because the same thread should not be restarted.
View ArticleAnswer by JayC667 for "implements Runnable" vs "extends Thread" in Java
The best way for most worker threads is to have the threading completely encapsuled in the worker class so that nothing can interfere from the outside and cause unwanted and invalid thread/class...
View ArticleAnswer by Ravindra babu for "implements Runnable" vs "extends Thread" in Java
If I am not wrong, it's more or less similar to What is the difference between an interface and abstract class? extends establishes "Is A" relation & interface provides "Has a" capability. Prefer...
View ArticleAnswer by Shababb Karim for "implements Runnable" vs "extends Thread" in Java
The simplest explanation would be by implementing Runnable we can assign the same object to multiple threads and each Thread shares the same object states and behavior. For example, suppose there are...
View ArticleAnswer by Peter Lawrey for "implements Runnable" vs "extends Thread" in Java
Thread holds behaviour which is not intended to be accessed; it's synchronized lock is used for join etc. it has methods you can access by accident. however if you sub-class Thread have to consider...
View ArticleAnswer by Saif for "implements Runnable" vs "extends Thread" in Java
Actually, It is not wise to compare Runnable and Thread with each other. This two have a dependency and relationship in multi-threading just like Wheel and Engine relationship of motor vehicle. I would...
View ArticleAnswer by Vishal for "implements Runnable" vs "extends Thread" in Java
One 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...
View ArticleAnswer by veritas for "implements Runnable" vs "extends Thread" in Java
Adding my two cents here - Always whenever possible use implements Runnable . Below are two caveats on why you should not use extends Threads Ideally you should never extend the Thread class; the...
View ArticleAnswer by Alex for "implements Runnable" vs "extends Thread" in Java
With the release of Java 8, there is now a third option. Runnable is a functional interface, which means that instances of it can be created with lambda expressions or method references. Your example...
View ArticleAnswer by samkit shah for "implements Runnable" vs "extends Thread" in Java
Simple way to say is: If you implement interface that means you are implementing all methods of it and if you extending the class you are inheriting method of your choice... In this case,there is only...
View ArticleAnswer by Rohit Chugh for "implements Runnable" vs "extends Thread" in Java
Difference between Thread and runnable .If we are creating Thread using Thread class then Number of thread equal to number of object we created . If we are creating thread by implementing the runnable...
View ArticleAnswer by Jörg for "implements Runnable" vs "extends Thread" in Java
Since this is a very popular topic and the good answers are spread all over and dealt with in great depth, I felt it is justifiable to compile the good answers from the others into a more concise form,...
View ArticleAnswer by Sionnach733 for "implements Runnable" vs "extends Thread" in Java
This is discussed in Oracle's Defining and Starting a Thread tutorial: Which of these idioms should you use? The first idiom, which employs a Runnable object, is more general, because the Runnable...
View ArticleAnswer by dharam for "implements Runnable" vs "extends Thread" in Java
Can we re-visit the basic reason we wanted our class to behave as a Thread? There is no reason at all, we just wanted to execute a task, most likely in an asynchronous mode, which precisely means that...
View ArticleAnswer by user2771655 for "implements Runnable" vs "extends Thread" in Java
if you use runnable you can save the space to extend to any of your other class.
View ArticleAnswer by Nikhil A A for "implements Runnable" vs "extends Thread" in Java
One reason you'd want to implement an interface rather than extend a base class is that you are already extending some other class. You can only extend one class, but you can implement any number of...
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Answer by Nidhish Krishnan for "implements Runnable" vs "extends Thread" in Java
If you want to implements or extends any other class then Runnable interface is most preferable, otherwise, if you do not want any other class to extend or implement then Thread class is preferable....
View ArticleAnswer by didierc for "implements Runnable" vs "extends Thread" in Java
That's the S of SOLID: Single responsibility. A thread embodies the running context (as in execution context: stack frame, thread id, etc.) of the asynchronous execution of a piece of code. That piece...
View ArticleAnswer by Rupesh Yadav for "implements Runnable" vs "extends Thread" in Java
Well so many good Answers, I want to add more on this. This will help to understand Extending v/s Implementing Thread.Extends binds two class files very closely and can cause some pretty hard to deal...
View ArticleAnswer by developer110 for "implements Runnable" vs "extends Thread" in Java
Runnable is an interface, while Thread is a class which implements this interface. From a design point of view, there should be a clean separation between how a task is defined and between how it is...
View ArticleAnswer by AHugoH for "implements Runnable" vs "extends Thread" in Java
This maybe isn't an answer but anyway; there is one more way to create threads: Thread t = new Thread() { public void run() { // Code here } }
View ArticleAnswer by AntonyM for "implements Runnable" vs "extends Thread" in Java
Everyone here seems to think that implementing Runnable is the way to go and I don't really disagree with them but there is also a case for extending Thread in my opinion, in fact you have sort of...
View ArticleAnswer by Himanshu Mohta for "implements Runnable" vs "extends Thread" in Java
Java does not support multiple inheritence so if you extends Thread class then no other class will be extended. For Example: If you create an applet then it must extends Applet class so here the only...
View ArticleAnswer by Tarvaris Jackson for "implements Runnable" vs "extends Thread" in Java
I find it is most useful to use Runnable for all the reasons mentioned, but sometimes I like to extend Thread so I can create my own thread stopping method and call it directly on the thread I have...
View ArticleAnswer by Manoj Kumar for "implements Runnable" vs "extends Thread" in Java
Yes, If you call ThreadA call , then not need to call the start method and run method is call after call the ThreadA class only. But If use the ThreadB call then need to necessary the start thread for...
View ArticleAnswer by Bart van Heukelom for "implements Runnable" vs "extends Thread" in...
I would say there is a third way: public class Something { public void justAnotherMethod() { ... } } new Thread(new Runnable() { public void run() { instanceOfSomething.justAnotherMethod(); }...
View ArticleAnswer by n13 for "implements Runnable" vs "extends Thread" in Java
Runnable because: Leaves more flexibility for the Runnable implementation to extend another class Separates the code from execution Allows you to run your runnable from a Thread Pool, the event thread,...
View ArticleAnswer by panzerschreck for "implements Runnable" vs "extends Thread" in Java
Moral of the story: Inherit only if you want to override some behavior. Or rather it should be read as: Inherit less, interface more.
View ArticleAnswer by Govula Srinivas for "implements Runnable" vs "extends Thread" in Java
Separating the Thread class from the Runnable implementation also avoids potential synchronization problems between the thread and the run() method. A separate Runnable generally gives greater...
View ArticleAnswer by Herms for "implements Runnable" vs "extends Thread" in Java
One thing that I'm surprised hasn't been mentioned yet is that implementing Runnable makes your class more flexible. If you extend thread then the action you're doing is always going to be in a thread....
View ArticleAnswer by Fabian Steeg for "implements Runnable" vs "extends Thread" in Java
You should implement Runnable, but if you are running on Java 5 or higher, you should not start it with new Thread but use an ExecutorService instead. For details see: How to implement simple threading...
View ArticleAnswer by Bob Cross for "implements Runnable" vs "extends Thread" in Java
tl;dr: implements Runnable is better. However, the caveat is important In general, I would recommend using something like Runnable rather than Thread because it allows you to keep your work only...
View ArticleAnswer by starblue for "implements Runnable" vs "extends Thread" in Java
Instantiating an interface gives a cleaner separation between your code and the implementation of threads, so I'd prefer to implement Runnable in this case.
View ArticleAnswer by Jon Skeet for "implements Runnable" vs "extends Thread" in Java
Yes: implements Runnable is the preferred way to do it, IMO. You're not really specialising the thread's behaviour. You're just giving it something to run. That means composition is the philosophically...
View ArticleAnswer by Powerlord for "implements Runnable" vs "extends Thread" in Java
I'm not an expert, but I can think of one reason to implement Runnable instead of extend Thread: Java only supports single inheritance, so you can only extend one class. Edit: This originally said...
View Article"implements Runnable" vs "extends Thread" in Java
From what time I've spent with threads in Java, I've found these two ways to write threads: With implements Runnable: public class MyRunnable implements Runnable { public void run() { //Code } }...
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Answer by Ajay for "implements Runnable" vs "extends Thread" in Java
Lambda expression with functional programming in java
View ArticleAnswer by Yogesh Sharma for "implements Runnable" vs "extends Thread" in Java
If you want to separate your concerns like, if you want to create Tasks and it does not matter to you who is the worker working on your task then use Runnable and define your work as a task. Just like...
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