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How to Create a Method in Java

A method is a unit of code that you call in a Java program. A method can support arguments and usually returns a value. To create a method in Java, follow these four steps.

  1. Open your text editor and create a new file. Type in the following Java statements:
    Java Source for Method

  2. The method you have coded is named computeAreaOfRectangle. It accepts two integer arguments and returns an integer, the product of the two arguments.

  3. Save your file as CreateAMethodInJava.java.

  4. Open a command prompt and navigate to the directory containing your new Java program. Then type in the command to compile your program and hit Enter.
    Compile Program with Method

  5. You can now test your Java program. Type in the command to run the Java runtime launcher and hit Enter. Observe the results of calling your method.
    Run Program with Method
Author: Stephen Withrow

Stephen has over 30 years' experience in training, development, and consulting in a variety of technology areas including Java, C, C++, XML, JavaScript, AJAX, Tomcat, JBoss, Oracle, and DB2. His background includes design and implementation of business solutions on client/server, Web, and enterprise platforms. Stephen is a published writer in both technical and non-technical endeavors. Stephen received an undergraduate degree in Computer Science and Physics from Florida State University.

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