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There are two ways to create threads.
1. Create Threads implementing Runnable interface
2. Create Threads Extending Thread class
When to use Runnable interface
Use Runnable interface when your class is extending some other class. Since in Java mulitple inheritance is not possible we use Runnable interface to create Threads.
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Java Topic / Java tutorial The best way to handle exception is by preventing it. Since exception causes abnormal termination of programs and they consume lot of resources compared the to the normal code execution.
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Inter Thread Communication is one of the distinct facility in multi threading application development of java. In real world Inter Thread communication based applications of java works faster when compared to all the other applications in java.
Inter-thread communication is all about making synchronized threads communicate with each other. It is a mechanism in which a thread is paused running in its critical section and another thread is allowed to enter in the same critical section to be executed. It is implemented by following methods of Object class
wait() : Tells the calling thread to give up monitor and go to sleep until some other thread enters the same monitor and call notify. Causes current thread to release the lock and wait until either another thread invokes the notify() method or the notifyAll() method for this object, or a specified amount of time has elapsed. The current thread must own this object's monitor.
Java Topic / Java tutorial The final keyword helps in making a variable unmodifiable after the initialization. If a variable is defined with final keyword, then it can not be modified after the initialization. This kind of check prevents the developers from accidentally modifying a variable, a method or a class.