Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

In this Java tutorial, you’ve learned how to use class field initializers and class initialization blocks to initialize classes, and how to use constructors, object field initializers, and ...

Java deserialization example. Of course, Java object serialization is only half of the job. The other half is Java object deserializtion, which we accomplish with the FileInputStream and the ...

Java string object example. In Java, a string is an object that represents a number of character values. Each letter in the string is a separate character value that makes up the Java string object.

The Java DataStax Driver comes with an object mapper that removes boilerplate of writing queries and lets you focus on your application objects. This example shows how to use mapper to build Data ...

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

Every Java Programmer is familiar with NullPointerException. It can crash your code. And it is very hard to avoid it without using too many null checks. Java 8 has introduced a new class Optional in ...

A program with examples of various Java syntax that converts a base 10 int to base 2 String. PrimeEx A program with various approaches to determine if an int is prime or not. Used to demonstrate Java ...