import java.util.Scanner;

public class Yuanzhu

{????private static double tij;

? ? ? public static void Tij()

????{????System.out.println("input r");

? ? ? ? ?Scanner a = new Scanner(System.in);

? ? ? ? ?double r=a.nextDouble();

? ? ? ? ?System.out.println("input l");

? ? ? ? ?Scanner ga = new Scanner(System.in);

? ? ? ? ?double gao=ga.nextDouble();

? ? ? ? ? tij=3.14*r*r*gao;

? ? ? ? ? System.out.println("print s:"+tij);

????}

public static void main(String[] args)

{ Tij(); }

}

這里是一個(gè)求圓柱體積的代碼。