Hello Friend

use this code, might be helpful to you.

public class MathFunction {

public static void main(String s[]) throws IOException{
InputStreamReader ins = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(ins);
String input;
float num= 0;
do{
System.out.println("Enter a Float number");
num = Float.parseFloat(br.readLine());
System.out.println("The Smallest Whole Number greater than " +num + " is " + Math.ceil(num));
System.out.println("The Largest Whole Number smaller than " +num + " is " + Math.floor(num));
System.out.println("The Absolute Number of " + num + " is " + Math.abs(num));
System.out.print("Do U want more (y/n)");
input = br.readLine();
}while(!input.equalsIgnoreCase("n"));
System.out.println("Exit");
}
}


Rajaniaknt