//BufferedReader is faster than scanner as it doesn't parse the text. Iterated over 1000 times, it saves 30 seconds in total. import java.io.BufferedReader; import java.io.InputStreamReader; class Ohm { public static void main(String[] args) throws java.io.IOException { float V, R; System.out.println("Put in Voltage and then Resistance"); BufferedReader voltage = new BufferedReader(new InputStreamReader(System.in)); V = Float.parseFloat(voltage.readLine()); BufferedReader resist = new BufferedReader(new InputStreamReader(System.in)); R = Float.parseFloat(resist.readLine()); System.out.println("Ohms: " + (V + 0.0)/R); } } //By msglm; Licensed under the AGPL v3