Introduction

In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..

import java.util.*;
public class Javamathexcercise {
 
 public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        System.out.print("Input a float number: ");
        float  x = in.nextFloat();  
        System.out.printf("The absolute value of %.2f is: %.2f",x, convert(x));
        System.out.printf("\n");
    }
 
    public static float convert(float n)
    {
        float absvalue = (n >= 0) ? n : -n;
        return absvalue;
    }
}

Result