Related questions with answers

(Format an integer) Write a method with the following header to format the integer with the specified width. pub1ic static string format(int number, int width) The method returns a string for the number with one or more prefix 0 s. The size of the string is the width. For example, format $(34$ , $4$ ) returns $0034$ and format $( 34 , 5)$ returns $00034$ . If the number is longer than the width, the method returns the string representation for the number. For example, format $(34,1)$ returns $34$ .

Write a test program that prompts the user to enter a number and its width, and displays a string returned by invoking format (number, width).

Write a method that converts milliseconds to hours, minutes, and seconds using the following header:

public static String convertMillis(long millis)

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(Occurrences of a specified character) Write a method that finds the number of occurrences of a specified character in a string using the following header:

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Question

Write a method with the following header to format the integer with the specified width. public static String format(int number, int width) The method returns a string for the number with one or more prefix 0s. The size of the string is the width. For example, format(34, 4) returns 0034 and format(34, 5) returns 00034. If the number is longer than the width, the method returns the string representation for the number. For example, format(34, 1) returns 34. Write a test program that prompts the user to enter a number and its width and displays a string returned by invoking format(number, width).

Solution

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Answered three weeks ago

Step 1

1 of 2

import java.util.Scanner;
public class Main
{
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        System.out.print("Enter a number and a width: ");
        int number = input.nextInt();
        int width = input.nextInt();

        System.out.print("Formatted representation: "  + format(number, width));
    }

    public static String format(int number, int width)
    {
        String numString = Integer.toString(number);

        if (numString.length() < width)
        {
            for (int i = width - numString.length(); i > 0; i--)
            {
                numString = 0 + numString;
            }
        }
        return numString;
    }
}

Step 1.1: Create a method format that returns a formatted string with prefixed 0s
Step 1.2: Convert a number to the string to conduct operations on it
Step 1.3: If the string’s length is smaller than entered width, add leading zeros in the width - length space
Step 1.4: If the string’s length is equal or greater than width, just return the string representation of the number
Step 2.1: Prompt the user to enter a number and a width
Step 2.2: Pass values to the method and display the formatted string