2 FLOATING POINT AND PRECISION AND CHALLENGE 

package com.cnc;

public class Main {

    public static void main(String[] args) {
 
        //FLOAT
        float myMinFloatVal = Float.MIN_VALUE;
        float myMaxFloatVal = Float.MAX_VALUE;
        System.out.println("FLOAT MINIMUM VALUE =" + myMinFloatVal);
        System.out.println("FLOAT MAXIMUM VALUE =" + myMaxFloatVal);

        
        //DOUBLE
        System.out.println("");
        double myMinDoubleVal = Double.MIN_VALUE;
        double myMaxDoubleVal = Double.MAX_VALUE;
        System.out.println("double MINIMUM VALUE =" + myMinDoubleVal);
        System.out.println("");
        System.out.println("double MAXIMUM VALUE =" + myMaxDoubleVal);

        int    i  =           5;
        float  f  = (float)5.77;
        float  f1 =       5.77f;
        double d  =     5.7755d;
        double d1 =      5.7755;

        int    i2  =           5;
        float  f2 =           5f;
        double d2  =          5d;
        System.out.println("int is "+ i2+"   "+"float is "+ f2+"         "+"double is "+ d2);

        int    i3  =         5/3;
        float  f3 =        5f/3f;
        double d3  =       5d/3d;//is more accurate & is faster than float
        System.out.println("int is "+ i3+"   "+"float is "+ f3+"   "+"double is "+ d3);

        //CHALLENGE
        //CONVERT A GIVEN NUMBER OF POUNDS TO KILOGRAMS.
            double numberOfPounds = 200d;
            double conertedKilograms= numberOfPounds*0.45359237d;
            System.out.println("Converted Kilograms = "+ conertedKilograms);

        //BOTH CASES RESULTS ARE SAME
           double pi = 3.1415927d;
           double pi1= 3.1_415_927d;
           System.out.println(pi);
           System.out.println(pi1);


    }
}
Both float and double are not great way to use where precise calculation are required.
Java has a class called as  BigDecimal.

FLOAT MINIMUM VALUE =1.4E-45
FLOAT MAXIMUM VALUE =3.4028235E38

double MINIMUM VALUE =4.9E-324

double MAXIMUM VALUE =1.7976931348623157E308
int is 5   float is 5.0         double is 5.0
int is 1   float is 1.6666666   double is 1.6666666666666667
Converted Kilograms = 90.718474
3.1415927
3.1415927



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