Java Tutorials — Basics

In this tutorial we will walk through the process of building a custom ListView with alternate background colors and an image icon set to every row.

In this tutorial I’ll show how we can access the media galery, pick a picture, and display it in our activity.

Checked and unchecked Exception are two different types of Exception in java. both are similar in functionality and you can do all things with checked exception which are possible with unchecked exception. though there are some subtle differences like for unchecked exception you don't need to add explicit try catch block which pollute code in case of checked Exception.

The first tutorial in an ongoing series about android programming, this simple tutorial introduces you to Android programming and some basic concepts i.e. XML based layouts and event handling

Writing an Image file in Java is very common scenario and in this article we will see a new way to write images into file in Java. javax.imageio.ImageIO is a utility class which provides lots of utility method related to images processing in Java.

TreeMap in Java is the best solution for Java programs which are looking for sorted datastrucutre. TreeMap in Java sort keys based on either their natural order or any custom order defined by provided comparator while creating TreeMap. If you try to store any element in TreeMap which is not of same type like earlier key you will get ClassCastException because with every new key insertion treeMap sort all the keys.

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.

Tutorial covers building lists in Android with ListView and ListActivity. Learn to create custom list layouts and displays including adding images and checkboxes to lists. Also display lists based on cursor data and adding actions to list items.

Database transaction is an important concept to understand while working in database and SQL. Transaction in database is required to protect data and keep it consistent when multiple users access the database at same time. In this database transaction tutorial we will learn what is transaction in database, why do you need transaction in database, ACID properties of database transaction and an example of database transaction along with commit and rollback.

This is one of the most popular interview question on String in Java which starts with discussion of What is immutable object , what are the benefits of immutable object , why do you use it and which scenarios do you use it. It can also come once interviewee answers some preliminarily strings questions e.g. What is String pool , What is the difference between String and StringBuffer , What is the difference between StringBuffer and StringBuilder etc.