operator.java

OOAD,加油

package ooad.composite;

public enum Operator {
	ADD{
			public double compute(Node n1,Node n2){
				return n1.getValue()+n2.getValue();
			}
		},
	RED{
			public double compute(Node n1,Node n2){
				return n1.getValue()-n2.getValue();
			}
		},
	TIMES{
			public double compute(Node n1,Node n2){
				return n1.getValue()*n2.getValue();
			}
		},
	DEV{
			public double compute(Node n1,Node n2){
				return n1.getValue()/n2.getValue();
			}
		};
	
	public abstract double compute(Node n1,Node n2);

}