Two java homework
/**
* Interface for a stack of primitive doubles.
*
* NOTE: The comments for this interface are horrible! You will
* need to write something better for your implementations.
*/
public interface DStack {
/**
* is empty?
*/
public boolean isEmpty();
/**
* push
*/
public void push(double d);
/**
* pop
* @return the deleted value
* @throws EmptyStackException if stack is empty
*/
public double pop();
/**
* peek
* @throws EmptyStackException if stack is empty
*/
public double peek();
}