Programación. Hallar la media en java.

public class media {
	public static void main( String[] args )
	{
	int a=10, b=10, c=30;
	int media =(a+b+c)/3;
	System.out.println("a= "+a);
	System.out.println("b= "+b);
	System.out.println("c= "+c);
	System.out.println("media=" +media);
	}
}