calc.java

java开发模式系列之策略模式 都是视频的

package org.jzkangta.strategy02;

public class Calc {
	private Operation o;
	
	public final static Operation add=new Add();
	public final static Operation jian=new Jian();
	public final static Operation cheng=new Cheng();
	public final static Operation chu=new Chu();
	
	public void oper(float a,float b){
		o.oper(a, b);
	}
}