Category Java

Scientech Easy welcomes you in the Java tutorial category. We have designed this tutorial series for beginners, students, and professional developers who want to learn Java programming from basic to advanced levels. Here, you will find easy-to-understand Java tutorials, practical example programs, interview questions, and quizzes.

So, let’s start to understand Java concepts one by one with these tutorials.

Private Constructor in Java with Example

When a constructor is declared with a private access modifier in a class, it is called private constructor in Java. It is visible within the same class where it has been declared. Private constructor is useful in Java programming when…

Java Number Class

Java Number class hierachy diagram

Number class in Java is an abstract class that is the superclass of Byte, Short, Integer, Long, Float, and Double classes. The Byte, Short, Integer, Long, Float, and Double classes are the most commonly used wrapper classes that represent numeric…

NavigableMap in Java

Java NavigableMap hierarchy diagram

NavigableMap in Java is an interface that is a subinterface of SortedMap interface. It extends SortedMap interface to handle the retrieval of entries based on the closet match to a given key or keys. NavigableMap interface was added by Java…

Wrapper Classes in Java (with Examples)

Wrapper classes in Java

A class that wraps a primitive data type into an object is called wrapper class in Java. In simple words, wrapper class provides a mechanism to convert primitive data type value into an object and vice-versa. For example, wrapping int…

Java Calendar Class

Calendar class in Java is an abstract super class that is designed to support different kinds of calendar systems. It is used to know system data and time information. Java Calendar class provides some specific functionality that is common to…