Learn Java enum with Examples

Informative infographic showcasing the key features of Java Enums. Explore constants, methods, and practical use cases.

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.lang.nullpointerexception Error and Fixing


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 Map

Informative infographic highlighting key features of Java Maps. Learn about key-value pairs, common implementations, and effective usage. A comprehensive guide for developers.

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.

What is Java Set?

An infographic explain what is Java Set. It shows main points about sets e.g. implementation classes (Hashset, Treeset), with an example.

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.

Java list – A Collection Interface

A visual illustration explaining the Java List interface. It point outs main features of lists, its implementations with example.

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.

How to Get Substrings by Java substring Method

In this Infographic, the substring method of Java String class is explained with two code snippets. Main points about the Substring method is also covered.

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

Informative infographic illustrating the key features of Java Strings. Learn about immutability, common methods, and efficient string manipulation. A comprehensive guide for developers

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.

Java int, Integer and long/Long Data Types

A visual illustration comparing the Java primitive int and Integer Class with the long and Long class. learn the differences and main points about both types.

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

Vectors in Java – The Dynamic Arrays

Informative infographic highlighting key features of Java Vectors. Learn about synchronization, dynamic sizing, and legacy methods. A comprehensive guide for developers.

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

Java ArrayList: Explained with 8 Examples

Informative infographic providing an overview of Java ArrayList. Topics include initialization, dynamic resizing, adding elements, sizing and other main points.

ArrayList in Java Unlike the standard array class in Java, the ArrayList is dynamic. It allows adding or removing the elements after it is created. Java ArrayList implements the List interface. That means you may use all operations that the list interface provides while ArrayList extends the AbstractList class. The index of ArrayList starts at … Read more

Java Arrays

Visual guide outlining fundamental aspects of Java arrays. Includes declaration, initialization, accessing elements, and insights into multidimensional arrays. A must-have reference for array manipulation in Java.

The arrays in Java An array is a type of variable in Java that may hold one or more values of a similar type. For example, an array of ten elements of a type integer can store 10 numbers. int[] Intarr = {5,10,15,20,25,30,35}; for (int ArrItem : Intarr) { System.out.println(“Array Element Value: ” + ArrItem); … Read more

Java forEach Loop

java foreach list

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

3 demos of do while and while loops in Java

java while do while loops

The while and do while loops in Java Among the different types of loops available in Java, the while loop is one of those. In Java while and do while loops, the given block of code keeps on executing as long as the condition given in while statement is true. The expression used in the … Read more

Java switch case statement with 4 examples and code

java switch for loop

The switch case statement in Java In Java programming language, the switch is a decision-making statement that evaluates its expression. This is how the switch statement in Java works: The switch block, which is the body of switch statement may contain one or more case labeled statements. It may also contain a default label. After … Read more