/**
  * @author  monika heiner
  * @version 1.0
  * @date 10.04.2012
  * @class SwitchDemo1
  */

import java.util.Scanner;
class SwitchDemo1 {

// alternative Berechnung von Kugel- oder Würfelvolumen
public static void main(String[] args) { 

	Scanner in = new Scanner(System.in);
	char key;
	String nextKey;
	int i; 		// input -> Radius bzw. Kantenlänge
	double v; 	// output -> Volumen
	final double PI = 3.14;
	 	
	System.out.println(".. begin of switch demo ..\n");
	
	System.out.println("Was wollen Sie berechnen?");
	System.out.println("  Kugelvolumen (K)");
	System.out.println("  Wuerfelvolumen (W)");
	
	nextKey  = in.next();
	key = nextKey.charAt(0);
	
	switch (key) {
		case 'k': case 'K': 
			System.out.println("radius:");
			i = in.nextInt();
			v = i*i*i*PI*4/3;
			System.out.println("  -> Volumen = "+v);
			break;
		case 'w': case 'W': 
			System.out.println("kantenlaenge:");
			i = in.nextInt();
			v = i*i*i;
			System.out.println("  -> Volumen = "+v);
			break;
		default : 
			System.out.println("Was wollen Sie???"); 
	} // switch
	
} // main

} // SwitchDemo1