Identifique la realizacion de un modo alternado de los procesos ("PROC1" , "PROC1"y "PROC2" de forma indefinida.

public static void main(String[] args) {

Thread t1 = new Thread(){
@Override
public void run() {
int i=0;
while (true){
System.out.println(i+" PROC1 ");
i++;
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
}
}
}
};

Thread t2 = new Thread(){
@Override
public void run() {
int i=0;
while (true){
System.out.println(i+" PROC2 ");
i++;
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
}
}
}
};

t1.start();
t2.start();
}