📘 Lesson · Lesson 35

Multithreading

What is Multithreading?

Multithreading lets a program run multiple tasks at the same time using threads — improving speed and responsiveness.

Creating a Thread

class MyThread extends Thread {
    public void run() {
        System.out.println("Thread running");
    }
}
MyThread t = new MyThread();
t.start();   // starts a new thread

// Or with Runnable
Runnable task = () -> System.out.println("Task running");
new Thread(task).start();

Thread Lifecycle

New → Runnable → Running → (Waiting/Blocked) → Terminated. start() moves it to Runnable; the scheduler runs it.

Summary

Multithreading runs tasks concurrently via Thread or Runnable.
Call start() (not run()) to begin a new thread.

Multithreading क्या है?

Multithreading program को threads से कई tasks एक साथ चलाने देता है — speed और responsiveness बढ़ाता है।

Thread बनाना

class MyThread extends Thread {
    public void run() {
        System.out.println("Thread running");
    }
}
MyThread t = new MyThread();
t.start();   // नया thread शुरू करता है

// या Runnable से
Runnable task = () -> System.out.println("Task running");
new Thread(task).start();

Thread Lifecycle

New → Runnable → Running → (Waiting/Blocked) → Terminated। start() इसे Runnable करता है; scheduler चलाता है।

सारांश

Multithreading Thread या Runnable से tasks एक साथ चलाता है।
नया thread शुरू करने को start() call करें (run() नहीं)।

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