All Java Tutorials

How to serialize and deserialize a binary tree in Java

Tag: Java

Learn how to serialize and deserialize a binary tree in Java. Code examples included

How to create a singleton class in Java

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Learn how you can create a singleton class in Java with code examples

Java abstract class - with code examples

Tag: Java

Learn how an abstract class works and how to create one in Java

Create and use an anonymous object in Java

Tag: Java

Learn how you can create and use anonymous objects in Java

How to print an array in Java - single and multi-dimensional array

Tag: Java

A short guide on how to print a single and multi-dimensional array in Java

Java Interface vs Abstract Class - know when to use what

Tag: Java

Learn the differences between Java Interfaces and Abstract Classes in this tutorial

extends vs implements in Java

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Learn the differences between extends and implements and when to use each

How to initialize a generic array in Java. Code examples included

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Learn how to create and initialize a generic array in Java

How to parse a JSON String into an object with Java

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Learn how to parse a String into a JSON object using Java programming language

Java - Convert String type value into enum type tutorial

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Learn how to convert String type value into enum type in Java

Java - How to check if a variable or object is not null

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Learn how to avoid the Java NullPointerException error by checking if a variable is not null

Java args parameter simply explained

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Learn what is args parameter in Java main() method

Can you extend two classes in Java?

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A guide on how to extend two or more classes in Java

How to ignore exceptions thrown in your Java code

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A handy guide on how to ignore exceptions thrown when running a Java program

Creating a custom Exception class in Java

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Learn how to create and use a custom Exception class in Java

Creating an abstract class constructor in Java

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Learn if you can create an abstract class constructor in Java and when you should create one

How to declare a constant variable in Java

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Learn how to declare a constant variable in Java

Understanding the \\s+ regex pattern in Java

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A short guide on how the regex pattern \\s+ works in Java

How to get the length of a Linked List in Java

Tag: Java

Learn how to get the length of a Linked List instance in Java

How to print the values of a LinkedList in Java

Tag: Java

Learn how to print the values of a LinkedList instance in Java

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