However, they must contain a main method that can be launched, a requirement enforced by the Java compiler. This new feature allows developers to write programs without explicit class declarations.

Take your coding to the next level by learning advanced programming with generics. Here's how to use generic methods with type inference, type parameters, and wildcards in your Java programs.

Sort One of the most common needs with collections is sorting. Java has long had a built-in Arrays.sort method, and Collections.sort allows for sorting by natural order or using a custom comparator.

The second answer is Java’s stream package, which represents the heart and soul of functional programming in Java. For example, the of method of the Collector interface takes a supplier as an argument ...

Use Java method modifiers to avoid public method antipattern Follow best practices for Java method design, and don't allow one public class to call another. If you skipped this step, be prepared to ...

Using the walk () method in Java 8 and onwards This programming tutorial will demonstrate how to utilize each of the above techniques to navigate a directory structure in Java.