Chapter 18, Problem 14PE

Program Plan Intro

Measurer of objects

Program plan:

Filename: “Measurer.java”

This code snippet creates a class “Measurer”. In the code,

• Import the required packages.
• Define an interface “Measurer”.
  • Declare a method “measure()”.
  • Define a method “max()”.
    • If “length” of “objects” is equal to 0,
      • Return “null”.
    • Create a variable “largest” and get the first element of “objects” to it.
    • Call the method “measure()” on “largest” and set the result to a variable “largestSize()”.
    • Iterate a “for” loop,
      • Define a variable “size”.
      • If “size” greater than “largestSize”,
        • Set “size” to “largestSize”.
        • Set “obj” to “largest”.
    • Return the value of “largest”.

Filename: “MeasurerTester.java”

This code snippet creates a class “MeasurerTester”. In the code,

• Import the required packages.
• Define a class “MeasurerTester”.
  • Define the “main” method.
    • Create a string array “words[]”.
    • Print the largest element of “words[]” using the method “max()”.
    • Print the expected result.
    • Declare a “Rectangle” array “rects[]”.
    • Print the largest area using the method “max()”.
    • Print the expected result.