7.1. Worked Example: Writing Method Headers

Subgoals for Writing Methods

1. Define method header based on problem

2. Define return statement at the end

3. Define method body/logic

   1. Determine types of logic (expression, selection, loop, etc)

   2. Define internal variables

   3. Write statements

You can watch this video or read through the content below it.

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Problem: Write a public method header that accepts as parameters 2 integers and a String in this order and calculates the maximum time of something and returns a double value.

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For this Worked Exmaple, we will focus on SG1: Define method header based on problem.

• When you pick your method name:

  • Make it something related to the use of the method.

  • Recall that method names are never capitalized at the first letter.

  • We will call this method maxTime

• A full method header contains:

  • access modifier,

  • return type,

  • method name, and

  • full parameter list (data type parameter_name)

public void maxTime (int a, int b, String c) {}

A call to this method would look like:

double x = obj.maxTime(5, 3, "happy");

Practice Pages

• 7.1.1. WrMethods-WE1-P1
• 7.1.2. WrMethods-WE1-P2

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