Definition
a deadlock is a situation in which two or more competing actions are each waiting for the other to finish, and thus neither ever does. a deadlock happens when two processes each within its own transaction updates two rows of information but in the opposite order.DeadLock Between Two Threads Example Program
public class DeadLockBetweenTwoThreads {
String strone = "HAI";
String strtwo = "HELLO";
Thread t1 = new Thread("Thread One"){
public void run(){
while(true){
synchronized(strone){
synchronized(strtwo){
System.out.println(strone + strtwo);
}
}
}
}
};
Thread t2 = new Thread("Thread Two"){
public void run(){
while(true){
synchronized(strtwo){
synchronized(strone){
System.out.println(strtwo + strone);
}
}
}
}
};
public static void main(String a[]){
DeadLockBetweenTwoThreads obj = new DeadLockBetweenTwoThreads();
obj.t1.start();
obj.t2.start();
}
}
Sample Output
Output is:
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HAIHELLO
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
HELLOHAI
