Question

java program

1. Create a program that creates and prints a random phone number using the following format: XXX-XXX-XXXX. Make sure your output include the dashes.  Do not let the first three digits contain an 8 or 9 (HINT: do not be more restrictive than that) and make sure that the second set of three digits is not greater than 773.

   Helpful Hint:   Think though the easiest way to construct the phone number. Each digit does do not have to be determined separately.  

   EXAMPLE OUTPUT:

   //proffesor name
   //JAVA IDE
   // homework

   //randomly selected telephone number

   773-345-8786

Answer 1

Code is Given below:

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import java.util.Random;

public class PhoneNumber {
   public static void main(String[] args) {
       //creating Random object to generate random numbers
       Random rnd=new Random();
       //generating first 3 digit
       int num1 = rnd.nextInt(7) + 1;//numbers can't include an 8 or 9, can't go below 100.
       int num12=rnd.nextInt(7);
       int num13=rnd.nextInt(7);
      
       //generating second 3 digit
int num2 = rnd.nextInt(662) + 100;//number has to be less than 773//can't go below 100.
//generating list digits
int num3 = rnd.nextInt(8999) + 1000; // make numbers 0 through 9
String phoneNumber;
//converting all numbers into string
String string1 = Integer.toString(num1);
String string12 = Integer.toString(num12);
String string13 = Integer.toString(num13);
String string2 = Integer.toString(num2);
String string3 = Integer.toString(num3);
//combining all digits
phoneNumber=string1+string12+string13+"-"+string2+"-"+string3;
//printing result
System.out.println("//proffesor name");
System.out.println("//JAVA IDE");
System.out.println("//randomly selected telephone number");
System.out.println(phoneNumber);
   }

}

Output:

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Code Snapshot:

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