speedofSoundSwitch

package act;
import java.util.Scanner;

public class SpeedOfSound
{

	public static void main(String[] args)
	{
	Scanner keyboard =  new Scanner(System.in);
	Double x;
	System.out.println("The following table shows the approximate speed of sound in air, water, and steel:\r\n" +
			"\r\n" +
			"Medium           Speed\r\n" +
			"---------------------------------------\r\n" +
			"Air              1,100 feet per second\r\n" +
			"Water            4,900 feet per second\r\n" +
			"Steel            16,400 feet per second");
	System.out.print("Enter the medium in which you would like to travel:");
	String med = keyboard.nextLine();
		med = med.toUpperCase();
	System.out.print("Enter the distance you would like to travel (in feet):");
	int dis = keyboard.nextInt();

	switch(med)
	{
		case "AIR":
			x = 1100.00;
		break;
		case "WATER":
			x = 4900.00;
		break;
		case "STEEL":
			x = 16400.00;
		break;
	default:
	System.out.println("invalid medium");
	x = 0.00;
	}

	double t = dis/x;
	System.out.println("It will take sound "+t+" seconds to travel "+dis+
			" feet of "+med+".");





	keyboard.close();




	}

}