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Home Articles

How to Define, Create and Execute Java Methods

by Kiranlal VT
November 19, 2022
in Articles, Entri Skilling, Java Programming
How to Define, Create and Execute Java Methods
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A method is often a strategy to carry out a task. Similar to this, a Java method is a group of commands that carry out a certain operation. It allows for the reuse of code. Using methods, we may edit code with ease as well. A method is a section of code, series of statements, or body of code used to carry out a certain task or action. It helps to make code more reusable. A technique is created once and used repeatedly. We don’t demand that you write the same code over and over. Additionally, it offers simple code modification and readability, merely by adding or removing a section of code. The method is only ever called or invoked once. The main() method is the most significant Java method.

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In Java, there are two categories of methods. The two types of methods are user-defined and predefined. Predefined methods in Java refer to the methods that are already defined in the Java class libraries. It is often referred to as the built-in or standard library technique. A user-defined method has been written by a user or programmer. These techniques are altered based on the situation.

How to Define Java Methods?

The method declaration and the method body are the two main components of a method definition. The method declaration specifies every aspect of the method, including access level, return type, name, and arguments. The method body is where everything happens. It includes the directions for applying the method. A method declaration just needs to include the name of the method, the return type, and two parentheses: ( and ). Additional details about a method can be found in its declaration, such as the method’s return type, the number and nature of its necessary parameters, and the classes and objects that may call it. The elements of a method declaration are all listed below.

  • accessLevel – Accessibility of the approach
  • static – establishes a class method
  • abstract – demonstrates that the procedure isn’t used
  • final – shows that the procedure cannot be changed
  • native – shows that the procedure is used in a different language
  • synchronized – The technique needs a monitor to function.
  • returnType methodName – The name and return type of the method
  • paramList – the method’s list of parameters
  • throws exceptions – The exceptions that the method raised

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How to Create Java Methods?

In a Java program, a method is a section of code that is called. A method typically returns a value and accepts arguments. The steps listed below can be used to construct a method in Java.

  1. Make a new file in your text editor after opening it. Type public class createMethodInJava.
  2. As CreateAMethodInJava.java, save your file.
  3. Navigate to the directory holding your new Java program by opening a command line. the command to compile your program, then press enter.
  4. Your Java program is now ready for testing. Hit Enter after entering the command to activate the Java runtime. Watch what happens when someone calls your method.

How to Execute Java Methods?

A method should be called to use it. A method can be invoked in one of two ways: by returning a value or by returning nothing. Method calling is an easy process. The program control is handed to the called method when a method is invoked. The called method then grants the caller authority under two circumstances:

  • It executes the return statement.
  • It arrives at the closing brace that ends the technique.

Methods that return void are regarded as calls to statements.

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Conclusion

With Java, a general-purpose programming language, you require a function to give applications the desired results. Typically, these operations are referred to as techniques. Methods are sometimes referred to be time savers since they enable the repetition of code segments without requiring you to retype the code. Additionally, techniques can be saved and used repeatedly in a newly created program.

 

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Kiranlal VT

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