5.1.1 Block Comments. The difference between the two is that a highly cohesive classes features a set of responsibilities that are strongly related, while classes adhering to SRP have just one responsibility. And when you click on Single-responsibility principle you get a page that has the following as its first paragraph: . The Single Responsibility Principle is based on the high cohesion principle. I am quite confused with the Single Responsibility Principle. The syntax to declare a method is: returnType methodName() { // method body } Here, returnType - It specifies what type of value a method returns For example if a method has an int return type then it returns an integer value. The single-responsibility principle (SRP) is a computer-programming principle that states that every module, class or function in a computer program should have responsibility over a single part of that program's functionality, which it should encapsulate. Single Responsibility Principle: Every interface, class, or method we define should have a clearly defined goal. In essence, it should ideally do one thing and do that well. Each letter of this acronym talks about principles in Java. The Principle states that there should only be one reason for the class to change. For example, consider the following class: Robert C. Martin gave five objected oriented design principles, and the acronym S.O.L.I.D is used for it. You can apply it to classes, software components, and microservices. Declaring a Java Method. The single responsibility principle is one of the most commonly used design principles in object-oriented programming. A good separation of responsibilities is done only when the full picture of how the application should work is … We can find plenty of classes in all popular Java libraries which follow single responsibility principle. The Single Responsibility Principle is the key software engineering principle which determines how we should modularise code in object oriented programming. Previous Next In this post, we will see 5 SOLID Principles in Java. This series on code smells continues with multi-responsibility methods, the problems they cause, and tips for refactoring them into better, more readable code. The problem which I am facing is, any change to a method or any logic change in doing things would change the class. In my last post, you learned what the Single Responsibility Principle is, why it is important, and its benefits.You’re now able to apply SRP at the class level.. Today, I’ll show you how to apply SRP at the method level.. By looking at some practical examples, you’ll learn how to spot potential code smells so that you can refactor your methods into shorter methods. In this article, we will learn the important object-oriented concept Delegation.Hand over the responsibility for a particular task to another class or method. Block comments may be used at the beginning of each file and before each method. For example, in Log4j2, we have different classes with logging methods, different classes are logging levels and so on. Block comments are used to provide descriptions of files, methods, data structures and algorithms. If the method does not return a value, its return type is void. When you use all the principles of S.O.L.I.D in a combined manner, it becomes easier for you to develop software that can be managed easily. This effectively leads to smaller methods and classes which are also testable. Programs can have four styles of implementation comments: block, single-line, trailing, and end-of-line. 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