test2.java

来自「OOAD,加油」· Java 代码 · 共 25 行

package ooad.composite;

public class Test2 {
	public static void main(String[] args) {
		//3-5*(2+7)*3/10+8;
		Number n1=new Number(3);
		Number n2=new Number(5);
		Number n3=new Number(2);
		Number n4=new Number(7);
		Number n5=new Number(3);
		Number n6=new Number(10);
		Number n7=new Number(8);
		
		Expression e1=new Expression(n3,n4,Operator.ADD);
		Expression e2=new Expression(n2,e1,Operator.TIMES);
		Expression e3=new Expression(e2,n5,Operator.TIMES);
		Expression e4=new Expression(e3,n6,Operator.DEV);
		Expression e5=new Expression(n1,e4,Operator.RED);
		Expression e6=new Expression(e5,n7,Operator.ADD);
		
		System.out.println(e6.getValue());
	}

}