Question

Assessment 1: Individual Assignment Weightage Submission Deadline Word Limit 30% TBA NA Assignment Topic and Requirements You are supposed to write Java program for the following questions. For every question, do provide at least THREE (3) different test cases. Question 1 Please use netbeans! joptionpane needed! Question 3 To make telephone numbers easier to remember, some companies use letters to show their telephone number. For example, using letters, the telephone number 438-5626 can be shown as GET LOAN. In some cases, to make a telephone number meaningful, companies must use more than seven letters. For example, 225-5466 can be displayed as CALL HOME, which uses eight letters. Write a program that prompts the user to enter a telephone number expressed in letters and outputs the corresponding telephone number in digits. If the user enters more than seven letters, then process only the first seven letters. Also output the-(hyphen) after the third digit. Allow the user to use both uppercase and lowercase letters as well as spaces between words. (12 Marks)

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Answer 1

Here is the program for your query.

import java.util.*;
public class Question3 {


    public static void main(String args[]) {

    Scanner keyboard = new Scanner(System.in);

    String telephone_letter;
    int index;



    System.out.println("Enter phone number :");
    telephone_letter = keyboard.nextLine();
    char aChar[] = telephone_letter.toCharArray();
    int[] number;
    for(index=0;index<telephone_letter.length();index++){
   
        number = new int[index];

        switch (aChar[index]) 
        {
            case 'A':
            case 'a':
            case 'B':
            case 'b':
            case 'C':
            case 'c':
                number[index] = 2;
                break;
            case 'D':
            case 'd':
            case 'E':
            case 'e':
            case 'F':
            case 'f':
                number[index] = 3;
                break;
            case 'G':
            case 'g':
            case 'H':
            case 'h':
            case 'I':
            case 'i':
                number[index] = 4;
                break;
            case 'J':
            case 'j':
            case 'K':
            case 'k':
            case 'L':
            case 'l':
                number[index] = 5;
                break;
            case 'M':
            case 'm':
            case 'N':
            case 'n':
            case 'O':
            case 'o':
                number[index] = 6;
                break;
            case 'P':
            case 'p':
            case 'Q':
            case 'q':
            case 'R':
            case 'r':
            case 'S':
            case 's':
                number[index] = 7;
                break;
            case 'T':
            case 't':
            case 'U':
            case 'u':
            case 'V':
            case 'v':
                number[index] = 8;
                break;
            case 'W':
            case 'w':
            case 'X':
            case 'x':
            case 'Y':
            case 'y':
            case 'Z':
            case 'z':
                number[index] = 9;
                break;
            default:
                System.out.println("Invalid Digit");
                break;


        }

    }

        System.out.println("achar" + number[0]+number[1]+number[2]+"-"+number[4]+number[5]+number[6]+number[7]);


    }
}