Category: Java Interview Questions

What is the difference between an interface and an abstract class in Java? In Java, an interface and an abstract class are both used to define a contract for classes…

1. Grouping a list of articles by their category and then sorting them by their title: 2. Finding the most frequent element in a list of log entries: 3. Summing…

Java 8 introduced the Stream API, which allows you to perform functional-style operations on collections of data. Here are some examples of using the Stream API: 1. Filtering a list…

In this tutorial, we will learn ThreadPool Example. Lets say, Application needs to send 1000 of email as part of nightly job. In this case, Thread Thread is a Simple…

Java is a programming language and computing platform first released by Sun Microsystems in 1995

1. What are nested classes in java? Class declared with in another class is defined as nested class.There are two types of nested classes in java.1) Static nested class :…