Java Method

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A Java Method is an Object-oriented Method written in a Java Programming Language.



References

2009

  • http://www.tutorialspoint.com/java/java_methods.htm
    • A Java method is a collection of statements that are grouped together to perform an operation. When you call the System.out.println method, for example, the system actually executes several statements in order to display a message on the console.

      In general, a method has the following syntax:

      modifier returnValueType methodName(list of parameters) {
      // Method body;
      }

      A method definition consists of a method header and a method body. Here are all the parts of a method:

      • Modifiers: The modifier, which is optional, tells the compiler how to call the method. This defines the access type of the method.
      • Return Type: A method may return a value. The returnValueType is the data type of the value the method returns. Some methods perform the desired operations without returning a value. In this case, the returnValueType is the keyword void.
      • Method Name: This is the actual name of the method. The method name and the parameter list together constitute the method signature.
      • Parameters: A parameter is like a placeholder. When a method is invoked, you pass a value to the parameter. This value is referred to as actual parameter or argument. The parameter list refers to the type, order, and number of the parameters of a method. Parameters are optional; that is, a method may contain no parameters.
      • Method Body: The method body contains a collection of statements that define what the method does.