Runnable interface:
Creating threads using runnable interface will not block you from using inheritance, Create a class that impliments Runnable interface and override a run method in it.
Program
public class Sam implements Runnable {
public void print() {
for (int i = 1; i <= 10; i++) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("from Sam : " + i);
}
}
public void run() {
print();
}
}Since Runnable interface doesn?t have start method we cannot access it using the sam class object, so we have to create a new Thread object to imitate it. Check this below program to start a thread.
public class Main {
public static void main(String[] args) {
Sam s1 = new Sam();
Thread t1 = new Thread(s1);
t1.start();
for (int i = 11; i <= 20; i++) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("from Main : " + i);
}
}
}Now run the program and check the output.
