visitor.java

java与模式 一书的源码

package com.javapatterns.visitor.visitorsimplified;

public class Visitor
{
    public void visit(NodeA nodeA)
    {
        System.out.println( nodeA.operationA() );
    }
    public void visit(NodeB nodeB)
    {
        System.out.println( nodeB.operationB() );
    }
}