February 19, 2019

Wait, notify and notifyall. What is the difference between notify and notifyall.

Q1 :- How does Java maintains a record of threads waiting on an object? Ans :- Each object has a waiting set. Every time a thread  calls wait on an object, that thread gets added in that waiting-set. So, a Set datastructure is used to maintain the record of waiting threads in java. Q2 :- What is the difference […]

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February 17, 2019

Using anonymous class to implement runnable interface in java

You can read about the other ways for implementing runnable interface – using a java class, and using lambda. In this part, we will use anonymous class for doing this. In my opinion, at the time of writing this article, the anonymous class is pretty useless now. If you need an anonymus class then use […]

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February 10, 2019

Using java lambda to provide implementation for Runnable interface.

There are many ways to create a thread. One of those ways is implementin Runnable interface. Again there are several ways to provide an implementation for it. One of those ways is, using lambda to provide an implementation. If you don’t know anything about lambda, then you can read it here. You are gonna need […]

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February 3, 2019

Implement runnable interface using a class in java.

Runnable is a Functional Interface. It has one abstract method called run. To make use of this class, we need to provide an implementation for this method. In practice, compiler only needs a non-abstract method. You can provide a empty body and that will be enough. The implementation need not be meaningful. Here is a simple class, […]

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January 29, 2019

Extending Thread Class to create threads in java.

To create Thread, we basically need to provide an implementation for run function. We can do it in two ways. Either we can extend Thread class and override it’s run method or we can implement Runnable interface and provide an implementation for it’s abstract run method. In this article, I am extending Thread class. public class SimpleThread extends Thread { } We have […]

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