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Beginner Java Exercise: Creating Custom Methods

A method is normally created to execute some repetitive code. For example, lets say you want to perform the quadratic formula on 10 different instances; Instead of writing the quadratic formula 10 different times, you create a method, pass the necessary parameters (in this case a, b and c) and have the code method return the value.

I honestly use it to make my code look cleaner and for re-usability across multiple classes.

In the following example, we'll find the greatest common divisor by utilizing the following steps:
  • Instantiate the Scanner class
  • Prompt for first integer and store
  • Prompt for second integer and store
  • Call the gcd() method to calculate the greatest common divisor
  • Return the value and display it to the screen

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