interfaceimp1.java

《Java2范例入门与提高》源码

package a2;
public class InterfaceImp1 implements Action{
	double num = 20;
	public void addValue(int n){
		num += n;
	}
	public void subtractValue(int n){
		num -= n;
	}
	public void factorialValue(int n){
		num = 1;
		for(int i =1;i<=n;i++)
		{
			num *= i;
		}
	}
	public double getValue(){
		return num;
	}
}