Java Tutorials

Java Enums with our comprehensive guide featuring two examples on how to define and use Enums effectively. Explore constant declarations, implicit methods, and implementations.

Java’s NullPointerException errors and discover effective fixes with three detailed examples. Uncover the common scenarios leading to NullPointerExceptions and learn practical solutions to enhance your Java programming skills.

Java Maps with our comprehensive guide featuring 8 examples utilizing HashMap and LinkedHashMap classes. Explore key-value pair intricacies, common implementations, and efficient data retrieval techniques.

Understand the fundamental concepts and usage of Java sets in this comprehensive guide on jQuery-az. Master the art of handling collections and unique elements in Java with practical examples.

Discover the versatility of Java List, a powerful collection interface explained with seven illustrative examples. Enhance your Java programming skills with practical insights on jQuery-az’s comprehensive guide to Java List.

What is Java substring method? In the string class chapter of Java, we learned how to create strings along with a few useful methods of the String class. One of the useful methods of the String class is substring(). The substring is part of the source string that you may get by using the substring() … Read more

Java Strings with our comprehensive guide featuring 8 examples of simple and powerful string functions. Explore the versatility of Java’s String class, covering immutability, concatenation, common methods, and effective string manipulation.

The int and long data types in Java Java provides a number of numeric data types while int and long are among those. The int and long are primitive data types. The int takes 32 bits or four bytes of memory while long takes 64 bits or 8 bytes. int x = 5; Integer y … Read more

Java vector class In the arrays chapter, we learned the standard arrays in Java are of fixed size. Once created, the size of the array cannot be changed or you can say, the elements in the standard array cannot be added or removed after creation. In Java programming, you will need to work with arrays that are … Read more

Unlike the standard array class in Java, the ArrayList is dynamic. It allows adding or removing the elements after it is created.

I will explain the elements and important points about Java arrays, first let me show you a few examples along with code for creating, initializing, and accessing arrays.

The forEach in Java The foreach loop is generally used for iteration through array elements in different programming languages. Java provides arrays as well as other collections and there should be some mechanism for going through array elements easily; like the way foreach provides. In Java 8, the forEach statement is part of the new … Read more

Among the different types of loops available in Java, the while loop is one of those. We explain with examples of how to use it.

The if statement is a decision-making statement in Java that allows controlling the flow of program based on the given condition.

The switch block, which is the body of switch statement may contain one or more case labeled statements.