simplecaculator.java

PSP实践第一个练习

package psp0_1;

/**
 * the interface of the caculation
 * @author qian
 * 2006 9/12
 */
public interface SimpleCaculator {

	/**
	 * add a double to the dataStructure
	 * @param num
	 */
	public void addNum(double num);
	
	
	/**
	 * clear the data in the dataStructrue
	 *
	 */
	public void clearFigure();
	
	
	/**
	 * get the mean of the data
	 * @return
	 */
	public double getMean();
	
	
	/**
	 * get the deviation of the data
	 * @return
	 */
	public double getDeviation();
}