You can define and instantiate a thread in one of two ways:
• Extend the java.lang.Thread class.
• Implement the Runnable interface.
Ex:
class MyFirstThread extends Thread {
public void run() {
System.out.println("Important job running in MyFirstThread");
}
}
class MyFirstRunnableClass implements Runnable {
public void run() {
System.out.println("Imp job running in MyFirstRunnableClass");
}
}
A Java Thread is a thread of execution in a Java Program. A Java Virtual Machine can have a single application running multiple threads, which is known as concurrency. Threads are what make the program run. Each thread has a different priority, and when the machine queue fills up, the threads are executed in the order of their priority.
I am assuming that you want to know how to multithread in Java. 1) Write a class that implements Runnable. Put just the method run() in it. 2) Inside the run() method, put the code that you want your thread to run. 3) Instantiate the class (example: Runnable runnable = new MyRunnable();) 4) Make a new Thread (example: Thread thread = new Thread(runnable, <the name of your thread(optional)>); 5) Start the thread (example: thread.start();) 6) That's it! Your thread is now running. PS. Check the Java API for more information. Did that answer your question?
No. Once a thread is stopped you cannot restart it.
Thread is a single sequential flow of control within program. Each flow of control may be thought of as a seperate lines of code(module) is called as thread.Actually thread is a predefined class in java. threads are used to handle Exceptions in java.
A Variable that is shared as well as synchronized cannot be created in Java. These two terms are mutually exclusive and a variable that is synchronized in java cannot be shared and vice versa
You can create a Thread in Java by using two ways. 1. Extending the Thread class public class Test extends Thread { ..... } 2. Implementing the Runnable Interface public class Test implements Runnable { ... }
You can start a thread "inline" without implementing Runnable or extending Thread class( new Thread() { public void run(){// do something} } ).start();
Medium priority
Daemon thread is a kind of thread that does not prevent the JVM from exiting when the thread is still running while the program finishes. A good example of this is the garbage collection.
Green thread scheduled by jvm insteadof respective operating system(nativiely).
A Java thread can be considered as similar to a user level thread. Let us say you are running a web browser, windows media player and GTalk for chat simultaneously - Actually the operating system is running an individual thread for each of these apps which gives you a seamless feeling of things running in parallel. Similarly Java Threads are features in the Java programming language that allow you to run multiple JVM tasks in parallel.
In Java a Thread object has two methods that the programmer needs to know: start and run.run is where we put the code that we want to execute when the Thread begins.The start method is what tells the Java Virtual Machine that it should create a new thread and tell it to execute its run method.While you can make a call to thread.run() in order to execute the code in the run method, this will not actually make a new thread in the JVM, but will execute just like any normal method call.