Write a function called activity which takes an integer parameter x that does the following:
• prints the heading “numbers: ” followed by all numbers from 1 to x
• prints the heading “evens: ” followed by all even positive numbers less than x
• prints the heading “activity” followed by the numbers from 1 to x with the following
replacement
• multiples of 5 replaced with the string “fiver” • multiples of 7 replaced with the string “” • other numbers printed as-is

here is code in java.

import java.util.*;

class Main

{

//  main method of the class

public static void main (String[] args) throws java.lang.Exception

{

   try{

    // Scanner class object to read the input integer

       Scanner scr=new Scanner(System.in);

       // ask user to enter the input

       System.out.print("enter a number:");

       // read the input

       int x=scr.nextInt();

       // call the function with parameter "x"

       activity(x);

   }catch(Exception ex){

       return;}

}

// activity function to perform given tasks

public static void activity(int x)

{

    // print all the Numbers from 1 to x

    System.out.print("Numbers:");

    for(int i=1;i<=x;i++)

    {

        System.out.print(i+" ");

    }

     System.out.println();

    // print all the Evens from 1 to x

     System.out.print("Evens:");

     for(int i=1;i<=x;i++)

    {

        if(i%2==0)

        System.out.print(i+" ");

    }

     System.out.println();

     // replace divisible of 5 and 7 with "fiver" and ""

     System.out.print("Activity:");

     for(int i=1;i<=x;i++)

    {

        if(i%5==0)

        System.out.print("fiver ");

        else if(i%7==0)

        System.out.print(" ");

        else

        System.out.print(i+" ");

    }    

}

}

Explanation:

Read an integer with the help of Scanner class object and assign it to variable "x". Call the function activity() with parameter "x". In the activity function, first print "Numbers" followed by all numbers from 1 to X. Then print header "Evens" followed by all the even number from 1 to x. In last print "Activity" header followed by numbers from 1 to x and replace a number with "fiver" if it is divisible by 5 or replace with "" if it  divisible by 7.

Output:

enter a number:17                                                                                                          

Numbers:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17                                                                          

Evens:2 4 6 8 10 12 14 16                                                                                                  

Activity:1 2 3 4 fiver 6 8 9 fiver 11 12 13 fiver 16 17