In this article we will see how to use Java interfaces correctly with with some examples. Using Java as Interfaces is often not used or wrongly used. This article demonstrates the practical uses of Interfaces in Java. First of all it is important to understand what is an interface? Let us create a “contract” where the …
Java
Garbage Collection in Java
In this article we will cover the proper use of Garbage Collection. Let us learn how it works, and understand how to induce the Garbage Collection. The Garbage Collection is a tool coupled to the JVM, that performs cleanup of objects in memory (Read: static utility for objects) which are of no further use. Our application will constantly suffer …
Best Practices to Override toString Method in Java?
In this article to we will see how to override the toString method and what are the best practices in Java. Java provides a default implementation for the method toString through a class java.lang.Object which is inherited by all Java classes . However, what it returns is not very informative. Your returned value is composed …
Dynamic Class Loading using Java Reflection
In this article we will discuss the concept of Java Reflection. Java Reflection is used to determine methods and attributes that will be used in a certain class at runtime.The Reflection in a nutshell, is used to determine methods and attributes that will be used in class (you do not know) at runtime. There are …
Difference between ArrayList, Vector and LinkedList in Java
This is a basic tutorial explaining about the APIs define under the collection package in Java. We encounter numerous questions from our readers to clarify the differences on these interfaces, we have come up with an tutorial to explain the key differences on these APIs. ArrayList, Vector and LinkedList, these confuse many beginners and even …
Design Patterns in Java
In developing a system, it is expected that some requirements are guaranteed, for example, performance, robustness, understanding, ease of reuse, modification, and use. The Design Patterns were created by the architect Christopher Alexander , in the 1970s. During this period the architect wrote two books: “Pattern Language” and “Timeless Way of Building“. These books were an example of …
ClassLoader in Java
In this article we will understand the basics of Classloader in Java. Let us first understand what is the meaning of classloader. What is the ClassLoader ? As its name implies, ClassLoader is a class that loads other classes. More scientific: The Classloader loads the bytecodes in its class to memory, so it can be …
How to check the java compiler version from a java class file?
This tutorial provides a great way to find Java compiler version for a class file generated. It is one of the common problem among Java developers to know the exact version in which the JAR file is created. If you receive a JAR file, can you find what is the target compiler version for that …