In Java, final classes and methods are used to restrict inheritance and prevent modifications in subclasses. This is useful when you want to ensure that… [Read More]
Common Errors in Inheritance in Java: Examples and solutions
In previous tutorials, we discussed inheritance in java and types of inheritance in Java. In this guide, we will discuss some of the common errors… [Read More]
StringJoiner toString() Method in Java
In this tutorial, we will discuss toString() method of StringJoiner class. This method is used to get the string representation of StringJoiner object, this includes… [Read More]
StringJoiner add() Method in Java
StringJoiner class is introduced in Java 8. It is a part of the java.util package. The main purpose of a StringJoiner is to create a sequence… [Read More]
How To Rotate A List In Java – Two Ways
In this guide, you will learn how to rotate a list in Java. Rotation means shifting of elements, for example rotating a list to right… [Read More]
Calculate Average of List in Java
In this tutorial, you will learn how to calculate average of a List in Java. This can be done on ArrayList of numbers such as… [Read More]
Convert JSON Array to ArrayList in Java
In this guide, you will learn how to convert JSON array to ArrayList in Java. To parse the given JSON data, you can use org.json… [Read More]
How to Find length of an Integer in Java
In this tutorial, you will learn how to find length of an Integer in Java. There are several ways you can achieve this. One of… [Read More]
How to Find Size of an int in Java
The int data type is a primitive data type in Java. The size of int is fixed as defined by Java language specification. The size… [Read More]
Java int vs Integer
In this guide, you will learn the differences between int and Integer. Both of these are the data types that represents integer values. However they… [Read More]
Why String Immutable or Final in Java
The immutable and final nature of String class is intentional. This is by design to offer several features and advantages. In this guide, we will… [Read More]
Immutable String in Java
A String in Java is immutable, which means once you create a String object, its value cannot be changed. Any changes (such as concatenation) made… [Read More]
Toggle String in Java
In this guide, we will learn how to toggle string in Java. Toggle means reversing the case of each character of String (i.e., converting uppercase… [Read More]
How to take String Input in Java
In this tutorial, we will learn how to take String input in Java. There are two ways you can take string as an input from… [Read More]
Java Switch with Strings
Introduced in Java 7, you can use switch statement with Strings. This makes code more readable as sometimes the string value of switch case variable… [Read More]
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