What is an example of a thread in Java?
What is an example of a thread in Java?
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In Java, a thread is a flow of execution that runs concurrently with other threads. It's a way to achieve concurrency and multitasking, allowing your program to perform multiple tasks simultaneously.
A thread in Java is represented by the Thread class, which provides methods for creating, starting, stopping, and manipulating threads. Here are some key concepts:
Thread creation: You can create a new thread using the Thread constructor or by extending the Thread class and overriding the run() method. The run() method contains the code that you want to execute in a separate thread. Thread start: To start a thread, you need to call the start() method on the Thread object. This method initializes the thread and begins executing its run() method. Thread yield: When a thread finishes its execution or yields control back to the operating system, it's considered terminated.Here's an example of creating and starting a new thread in Java:
public class MyThread extends Thread {
public void run() {
for (int i = 0; i < 10; i++) {
System.out.println("Thread running: " + i);
try {
Thread.sleep(100); // Simulate some work
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
}
public class MainClass {
public static void main(String[] args) {
MyThread myThread = new MyThread();
myThread.start(); // Start the thread
for (int i = 0; i < 10; i++) {
System.out.println("Main Thread running: " + i);
try {
Thread.sleep(100); // Simulate some work
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
}
In this example, we create a new thread by extending the Thread class and overriding the run() method. In the run() method, we execute a loop that prints messages to the console. The main thread creates an instance of MyThread, starts it using the start() method, and then runs its own loop.
When you run this program, you'll see output from both threads simultaneously:
Main Thread running: 0
Thread running: 0
Main Thread running: 1
Thread running: 1
...
This illustrates how multiple threads can run concurrently in a Java program.
What is thread pool in Java
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