Java Tutorials

This article is about how to do logging in Java, how to use log4j and some practical logging tips in Java. this is more a collection of experience, best practices and provides a developers view on java logging. Its critical to use correct logging level, correct format and know which information to log.

This extract will take you through a chapter “Using Themes” from this book. Themes are used to establish visual coherence through all the screens of an application. The LWUIT Designer is the tool that displays, edits and builds the themes that define how your applications will look. In this chapter, you will learn about themes, their usage and how they can be created.

Making code thread-safe in java is bit of challenge in Java, you need to be expert in multi-threading in order to write correct concurrent code in java. finding and fixing race conditions in java are very costly and result is some very frustrating subtle bug in Java. this article will help you to write thread safe code in java.

Helps users get started taking input from users and working with variables on a basic level.

Simple Java program which teaches how to reverse Java program by using arithmetic operator in Java. In order to reverse digit of a number you need to use divide and modulas operator.

This is our series of articles covering introductory-level Java and programming topics. Java Article 20: Java Collections - ArrayList

This is our series of articles covering introductory-level Java and programming topics. Article 13 part 2 covers the use of multiple classes in object oriented programming.

This is also a very popular java interview questions mostly asked as how to reverse string in Java without using Stringbuffer reverse but There are many different ways to solve this problem using recursion and in this article we discuss one of those way to reverse string in Java.

Java tutorial on what is assertion in java and why should you use assertion to improve code quality. Also Assertion in java is fairly underused feature but if used carefully can complement both Unit Testing and Exception handling. Since Assertion sits on code its gets more expose than unit testing and can test your function with more real data than one or two test data.

Processing is a higher level implementation of Java for visually-based programs and a great way to learn programming for beginners. If you want to create Java applications such as games, visualizations, GUI's, Android apps or similar program types but find Java difficult to learn Processing could be what you are looking for. This in depth documentation includes tutorials, exercises and a full course for those starting out with programming.