Htykuut

I was asked to create a code with three methods. This program should be have a method for each of the conversions decimalToBinary, decimalToOctal and decimalToHexadecimal and then display the results in a table with four columns: Decimal, Binary, Octal and Hexadecimal using printf

I was able to create the code to do the conversions however I am having a very hard time figuring out how to print the code into a column. I did research and I know how to use printf however I am confused since the lengths of the outputs will be different every time. How can I get them to display equally? Here is my code.

import java.util.Scanner;

public class Convert {



public static void main(String args) {

    Scanner input = new Scanner(System.in);



    System.out.println("Please enter your decimal number");



    int decimal = input.nextInt();

    System.out.printf("Decimal: %dn", decimal);



    String binary=decimalToBinary(decimal);

    System.out.printf("Binary: %sn", binary);



    String octa=decimalToOctal(decimal);

    System.out.printf("Octal: %sn", octa);





    String hexa=decimalToOctal(decimal);

    System.out.printf("Hexa:%sn", hexa);





}



public static String decimalToBinary(int decimal) {



    int remainder;

    String answer="";



    while (decimal>0) {

    remainder=decimal%2;

    decimal=decimal/2;

    answer=remainder+answer;



    }

    return answer;

}

public static String decimalToOctal(int decimal) {



    int remainder;

    String answer="";



    while (decimal>0) {

    remainder=decimal%8;

    decimal=decimal/8;

    answer=remainder+answer;    

    }

    return answer;

}



public static String decimalToHexadecimal(int decimal) {



    int remainder;

    String answer="";





    while (decimal>0) {

        remainder=decimal%16;

        decimal=decimal/16;



        if (remainder==10)

            answer= "A" + answer;

        else if (remainder==11)

            answer= "B" + answer;

        else if (remainder==12)

            answer= "C" + answer;

        else if (remainder==13)

            answer= "D" + answer;

        else if (remainder==14)

            answer= "E" + answer;

        else if (remainder==15)

            answer= "F" + answer;

        else answer=remainder+answer;

    }

    return answer;



}

}

Take a look at the printf() documentation, in particular the format string syntax. You are after the width specifiers. For example,

printf("%20s", s);

will ensure your output will have a width of 20 characters. You can play around with the variations to achieve what you want.