Java j2ee Guides

What is Java Collections Framework? List out some benefits of Collections framework? Collections are used in every programming language and initial java release contained few classes for collections: Vector , Stack , Hashtable , Array . But looking at the larger scope and usage, Java 1.2 came up with Collections Framework that group all the collections interfaces, implementations and algorithms. Java Collections have come through a long way with usage of Generics and Concurrent Collection classes for thread-safe operations. It also includes blocking interfaces and their implementations in java concurrent package. Some of the benefits of collections framework are; Reduced development effort by using core collection classes rather than implementing our own collection classes. Code quality is enhanced with the use of well tested collections framework classes. Reduced effort for code maintenance by using collection classes shipped with JDK. Reusability and Interoperabili...

When to make a method static in Java Making a method static in Java is an important decision . Though, static keyword is one of the fundamental concepts, many times programmers gets confused to make a particular method static or not. In Java programming, main motivation for making a method static is convenience . You can call a static method without creating any object, just by using it's class name. So if you need a method, which you want to call directly by class name, make that method static. Utility classes e.g. java.lang.Math or StringUtils , are good examples of classes, which uses static methods. Before making a method static, you should look into limitation of static methods as well, as you can not override static method in Java. By keeping these properties in mind, we can make few rules, which will help to decide when to make a method static in Java and when to use them. In this Java article, we will learn more about benefits and limitation of making a me...