Chapter 19, Problem 3PP

Program Plan Intro

Print prime numbers

Program plan:

Filename: “StreamUtil.java”

• Include the required header files
• Define the class “StreamUtil”
  • Define the “primeStream” method
    • Return the palindrome square value
  • Define “isPalidrome” method
    • Declare the required variables and call the methods
    • The results are stored in the corresponding variables.
    • Return the value
  • Define “isPrime” method
    • Check “n” is less than 2
      • Return false
        • Check “n” is equal to 2 or 3
        • • Return true
        • Check “n%2” is equal to 0 or “n%3” is equal to 0
        • • Return false
        • Declare the variable and calculate the square of “n”
        • Iterate “i” until it reaches “sqrtN”
        • Check “n%(i-1)” is equal to 0 or “n%(i + 1)” is equal to 0
        • • Return false
        • Return true

Filename: “Main.java”

• Include the required header files
• Define the class “Main”
  • Define the “main” method
    • Call the “printPrime” method with value “1” and display the result.
    • Display the expected value
    • Call the “printPrime” method with value “10” and display the result.
    • Display the expected value
    • Call the “printPrime” method with value “26” and display the result.
    • Display the expected value
    • Call the “printPrime” method with value “500” and display the result.
    • Display the expected value
  • Define the “printPrime” method
    • Display the perfect square
    • Call the “primeStream” method in “StreamUtil” class