java state 状态设计模式

State接口代码

package org.javaer.code.pattern.state;

import java.util.ArrayList;

import java.util.List;

public interface State{

List

Exception in thread“main”java.lang.StackOverflowError

at sun.nio.cs.UTF_8.updatePositions(Unknown Source)

at sun.nio.cs.UTF_8$Encoder.encodeArrayLoop(Unknown Source)