Threads can be made synchronous. One of the way is using synchronized method.
SyncMethodDemo.java
class FirstSync {
public FirstSync() {}
public synchronized void printHelloWorld() {
try {
System.out.print("Hello");
Thread.sleep(1000);
} catch (InterruptedException e) {
System.out.println("First sync interrupted.");
}
System.out.print(" World. ");
}
}
class SecondSync {
public SecondSync() {}
public synchronized void printMe() {
try {
System.out.print("I am a ");
Thread.sleep(1000);
} catch (InterruptedException e) {
System.out.println("Second sync interrupted.");
}
System.out.println("sync method");
}
}
class SyncMethDemo {
public static void main(String args[]) {
// Get current thread's object
Thread mainThread = Thread.currentThread();
// Set a name to main thread
mainThread.setName("Main Thread");
new Thread(new Runnable() {
public void run() {
// Create thread objects
FirstSync f = new FirstSync();
f.printHelloWorld();
SecondSync s = new SecondSync();
s.printMe();
}
}).start();
}
}
Output: Hello World. I am a sync method
