Can I implement my own start () method?

Can we override a start() method in Java? Yes, we can override the start() method of a Thread class in Java. We must call the super. start() method to create a new thread and need to call run() method in that newly created thread.

For what do you use the start () method?

The start() method of thread class is used to begin the execution of thread. The result of this method is two threads that are running concurrently: the current thread (which returns from the call to the start method) and the other thread (which executes its run method).

Which methods do we override in a thread class implementation start () main () run () execute ()?

We can override start/run method of Thread class because it is not final. But it is not recommended to override start() method, otherwise it ruins multi-threading concept.

What will happen when we call start () method?

Calling start () will start a new Thread and calling run() method does not start a new Thread. If you call start() method on Thread, Java Virtual Machine will call run() method and two threads will run concurrently now - Current Thread and Other Thread or Runnable implementation.

Can we use run () instead of start ()?

If run() method is called directly instead of start() method in Java code, run() method will be treated as a normal overridden method of the thread class (or runnable interface). This run method will be executed with in the context of the current thread not in a new thread.

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Can we call start method twice?

start method: It is never legal to start a thread more than once. In particular, a thread may not be restarted once it has completed execution.

What is the difference between run () and start () methods in threads?

start method of thread class is implemented as when it is called a new Thread is created and code inside run() method is executed in that new Thread. While if run method is executed directly than no new Thread is created and code inside run() will execute on current Thread and no multi-threading will take place.

Can we override start method in Java?

Can we override a start() method in Java? Yes, we can override the start() method of a Thread class in Java. We must call the super. start() method to create a new thread and need to call run() method in that newly created thread.

What is the difference between run () and start () methods in threads Mcq?

Explanation: run() method is used to define the code that constitutes the new thread, it contains the code to be executed. start() method is used to begin execution of the thread that is execution of run().

Why do we need run () and start () method Both can we achieve it with only run method?

If you call start method then a separate thread will be allocated to execute the run method, means you achieve multi threading . But when you call run method directly then it becomes a normal method and main method itself will execute the run method , means no multi threading.

Can we overload run () method?

Overloading of run() method is possible. But Thread class start() method can invoke no-argument method. The other overloaded method we have to call explicitly like a normal method call.

Can we have two run methods in Java?

You can't have two run() methods, because you (and the compiler) could not know which one to execute when calling obj. run() .

Can we overload run () method What if we do not override the run () method?

Answer: If we don't override run() method, compiler will not flash any error and it will execute run() method of Thread class that has empty implemented, So, there will be no output for this thread.

What is start method in Python?

start() method is an inbuilt method of the Thread class of the threading module in Python. It is used to start a thread's activity. This method calls the run() method internally which then executes the target method. This method must be called at most one time for one thread.

Can we call the run () method instead of start () in Java?

No, you can not directly call run method to start a thread. You need to call start method to create a new thread. If you call run method directly , it won't create a new thread and it will be in same stack as main.

What is the difference between init () and start () method explain?

2. start( ) : The start( ) method is called after init( ). It is also called to restart an applet after it has been stopped. Note that init( ) is called once i.e. when the first time an applet is loaded whereas start( ) is called each time an applet's HTML document is displayed onscreen.

Which method is executed when the start () method of a thread object is called in Python?

Thread object which is created using constructor or run method can be started by using start() method. Whenever a Thread object starts a new thread then internally it's run() method is invoked.

Which method is called internally by thread start () method * Run () Execute () main ()?

Q) Which method is called internally by Thread start() method? Thread start() method internally calls run() method. All statements inside the run method is get executed by the thread.

Why must you override the run () method in your thread class?

The reason why we override run when we extend the thread class is that we want some piece of code to run in a multi-threaded fashion. So the creators of Java have agreed upon a name for the method to be overridden.

What happens when method start () is invoked for an object in class that extends class thread?

start. Causes this thread to begin execution; the Java Virtual Machine calls the run method of this thread. The result is that two threads are running concurrently: the current thread (which returns from the call to the start method) and the other thread (which executes its run method).

Can we execute a program without main () method?

Yes, we can execute a java program without a main method by using a static block. Static block in Java is a group of statements that gets executed only once when the class is loaded into the memory by Java ClassLoader, It is also known as a static initialization block.

What happens when you call the run () method instead of start () of a thread class *?

If we called run() method directly instead of calling start() method in Java code, run() method will be treated as a normal overridden method of the thread class (or runnable interface). This run method will be executed with in the context of the current thread not in a new thread.

How does run () method is invoked?

The thread run() method is automatically invoked when start() is called upon the thread object. Or, we can also call the run() method directly without calling the start() method, in which case a new thread will not be created, rather the calling thread will execute the run() of the specific thread class.

Can we start the dead thread again?

Once a thread enters dead state it cannot be restarted.

What is difference between wait () and sleep () method?

Wait() method releases lock during Synchronization. Sleep() method does not release the lock on object during Synchronization. Wait() should be called only from Synchronized context. There is no need to call sleep() from Synchronized context.