What is the difference between suspending and stopping a thread in java

Syntax: In order to get the ID number of the current thread is already created Thread. Skip to content. Change Language. Related Articles. Table of Contents. Save Article. Improve Article. Like Article. Last Updated : 13 Jul, Previous How to Create a Package in Java? Recommended Articles. Instead, a thread must be designed so that the run method periodically checks to determine whether that thread should suspend, resume, or stop its own execution.

Typically, this is accomplished by establishing a flag variable that indicates the execution state of the thread. As long as this flag is set to "running", run method must continue to let the thread execute.

If this variable is set to "suspend", the thread must pause. If it is set to "stop", the thread must terminate. Of course, a variety of ways exist in which to write such code, but the central theme will be same for all the programs.

The following example illustrates how wait and notify methods that are inherited from the Object can be used to control the execution of a thread. Let's consider its operation. The NewThread class contains a boolean instance variable named suspendFlag which is used to control the execution of the thread. It is initialized to false by the constructor. The run method contains a synchronized statement block that checks suspendFlag.

If that variable is true , the wait method is invoked to suspend the execution of the thread. The mysuspend method sets suspendFlag to true.

Which two of the following methods are defined in class Thread? Explanation: Only start and run are defined by the Thread class. The notifyAll method wakes up all threads waiting on the object in question in this case, the CubbyHole. One thread gets it, and the others go back to waiting.

The Object class also defines the notify method, which arbitrarily wakes up one of the threads waiting on this object. Java Thread start method The start method internally calls the run method of Runnable interface to execute the code specified in the run method in a separate thread.

The start thread performs the following tasks: It stats a new thread. The thread moves from New State to Runnable state. 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. The run method of thread class is called if the thread was constructed using a separate Runnable object otherwise this method does nothing and returns.

When the run method calls, the code specified in the run method is executed. You can call the run method multiple times. 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. If we call the run method directly from within our start method, it can be executed in the actual thread as a normal method, not in a new thread.

No, you can not directly call run method to start a thread. You need to call start method to create a new thread. As you can see when we are directly calling run method, it is not creating new threads. Daemon thread is a low priority thread that runs in background to perform tasks such as garbage collection.

Properties: They can not prevent the JVM from exiting when all the user threads finish their execution.