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Runnable Interface in Java
Runnable Interface in Java:
By Implementing `Runnable` Interface
class MyRunnable implements Runnable {
public void run() {
System.out.println("Runnable thread running");
}
public static void main(String[] args) {
Thread t1 = new Thread(new MyRunnable());
t1.start();
}
}
```
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# Difference Between `start()` and `run()`
| Method | Purpose |
| --------- | ------------------------------------------------- |
| `start()` | Creates a new thread and calls `run()` internally |
| `run()` | Executes like a normal method |
Example:
```java
t1.start(); // Multithreading
t1.run(); // Normal method call
```
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# Thread Methods
| Method | Description |
| ----------- | -------------------------------- |
| `start()` | Starts thread |
| `sleep()` | Pauses thread |
| `join()` | Waits for thread completion |
| `yield()` | Gives chance to other threads |
| `isAlive()` | Checks whether thread is running |
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# Example Using `sleep()`
```java
class SleepDemo extends Thread {
public void run() {
for(int i = 1; i <= 5; i++) {
System.out.println(i);
try {
Thread.sleep(1000);
} catch(Exception e) {System.out.println(e);}
}
}
public static void main(String[] args) {
SleepDemo t1 = new SleepDemo();
t1.start();
}
}
```
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