Chapter 19, Problem 12PE

Program Plan Intro

Returns the non-characters in the string

Program plan:

Filename: “CharactersTester.java”

• Include the required header files
• Define the class “CharactersTester”
  • Define the main method
    • Declare the “str” variable as string data type and assign the value.
    • Count the number of strings in the “str” variable and print it.
    • Display the result and expected value.
    • Call the “characters” method with an argument.
    • Display the result and expected value.
    • Call the “characters” method with an argument using “List” method
    • Display the result and expected value.

Filename: “StringStreamUtil.java”

• Include the required header files
• Define the class “StringStreamUtil”
  • Define “characters” method
    • Filter all the non-characters in the string and returns the value