nodea.java

来自「java与模式 一书的源码」· Java 代码 · 共 15 行

package com.javapatterns.visitor.visitor0;

public class NodeA extends Node
{
    public void accept(Visitor visitor)
    {
        visitor.visit(this);
    }

    public String operationA()
    {
        return "NodeA is visited";
    }
}