//菜单组件  不管是菜单还是菜单项，都应该继承该类
public abstract class MenuComponent {

    protected String name;
    protected int level;

    //添加菜单
    public void add(MenuComponent menuComponent){
        throw new UnsupportedOperationException();
    }

    //移除菜单
    public void remove(MenuComponent menuComponent){
        throw new UnsupportedOperationException();
    }

    //获取指定的子菜单
    public MenuComponent getChild(int i){
        throw new UnsupportedOperationException();
    }

    //获取菜单名称
    public String getName(){
        return name;
    }

    public void print(){
        throw new UnsupportedOperationException();
    }
}

public class Menu extends MenuComponent {

    private List<MenuComponent> menuComponentList;

    public Menu(String name,int level){
        this.level = level;
        this.name = name;
        menuComponentList = new ArrayList<MenuComponent>();
    }

    @Override
    public void add(MenuComponent menuComponent) {
        menuComponentList.add(menuComponent);
    }

    @Override
    public void remove(MenuComponent menuComponent) {
        menuComponentList.remove(menuComponent);
    }

    @Override
    public MenuComponent getChild(int i) {
        return menuComponentList.get(i);
    }

    @Override
    public void print() {

        for (int i = 1; i < level; i++) {
            System.out.print("--");
        }
        System.out.println(name);
        for (MenuComponent menuComponent : menuComponentList) {
            menuComponent.print();
        }
    }
}

public class MenuItem extends MenuComponent {

    public MenuItem(String name,int level) {
        this.name = name;
        this.level = level;
    }

    @Override
    public void print() {
        for (int i = 1; i < level; i++) {
            System.out.print("--");
        }
        System.out.println(name);
    }
}

public abstract class AbstractBox {
    public abstract String getShape();

    public void display(String color) {
        System.out.println("方块形状：" + this.getShape() + " 颜色：" + color);
    }
}

public class IBox extends AbstractBox {

    @Override
    public String getShape() {
        return "I";
    }
}

public class LBox extends AbstractBox {

    @Override
    public String getShape() {
        return "L";
    }
}

public class OBox extends AbstractBox {

    @Override
    public String getShape() {
        return "O";
    }
}

public class BoxFactory {

    private static HashMap<String, AbstractBox> map;

    private BoxFactory() {
        map = new HashMap<String, AbstractBox>();
        AbstractBox iBox = new IBox();
        AbstractBox lBox = new LBox();
        AbstractBox oBox = new OBox();
        map.put("I", iBox);
        map.put("L", lBox);
        map.put("O", oBox);
    }

    public static final BoxFactory getInstance() {
        return SingletonHolder.INSTANCE;
    }

    private static class SingletonHolder {
        private static final BoxFactory INSTANCE = new BoxFactory();
    }

    public AbstractBox getBox(String key) {
        return map.get(key);
    }
}

public class Demo {
    public static void main(String[] args) {
        Integer i1 = 127;
        Integer i2 = 127;

        System.out.println("i1和i2对象是否是同一个对象？" + (i1 == i2));

        Integer i3 = 128;
        Integer i4 = 128;

        System.out.println("i3和i4对象是否是同一个对象？" + (i3 == i4));
    }
}

public class Demo {
    public static void main(String[] args) {
        Integer i1 = Integer.valueOf((int)127);
        Integer i2 Integer.valueOf((int)127);
        System.out.println((String)new StringBuilder().append((String)"i1\u548ci2\u5bf9\u8c61\u662f\u5426\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\uff1f").append((boolean)(i1 == i2)).toString());
        Integer i3 = Integer.valueOf((int)128);
        Integer i4 = Integer.valueOf((int)128);
        System.out.println((String)new StringBuilder().append((String)"i3\u548ci4\u5bf9\u8c61\u662f\u5426\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\uff1f").append((boolean)(i3 == i4)).toString());
    }
}

public final class Integer extends Number implements Comparable<Integer> {
    
	public static Integer valueOf(int i) {
        if (i >= IntegerCache.low && i <= IntegerCache.high)
            return IntegerCache.cache[i + (-IntegerCache.low)];
        return new Integer(i);
    }
    
    private static class IntegerCache {
        static final int low = -128;
        static final int high;
        static final Integer cache[];

        static {
            int h = 127;
            String integerCacheHighPropValue =
                sun.misc.VM.getSavedProperty("java.lang.Integer.IntegerCache.high");
            if (integerCacheHighPropValue != null) {
                try {
                    int i = parseInt(integerCacheHighPropValue);
                    i = Math.max(i, 127);
                    // Maximum array size is Integer.MAX_VALUE
                    h = Math.min(i, Integer.MAX_VALUE - (-low) -1);
                } catch( NumberFormatException nfe) {
                }
            }
            high = h;
            cache = new Integer[(high - low) + 1];
            int j = low;
            for(int k = 0; k < cache.length; k++)
                cache[k] = new Integer(j++);
            // range [-128, 127] must be interned (JLS7 5.1.7)
            assert IntegerCache.high >= 127;
        }

        private IntegerCache() {}
    }
}

public abstract class AbstractClass {
    
    public final void cookProcess() {
        //第一步：倒油
        this.pourOil();
        //第二步：热油
        this.heatOil();
        //第三步：倒蔬菜
        this.pourVegetable();
        //第四步：倒调味料
        this.pourSauce();
        //第五步：翻炒
        this.fry();
    }

    public void pourOil() {
        System.out.println("倒油");
    }

    //第二步：热油是一样的，所以直接实现
    public void heatOil() {
        System.out.println("热油");
    }

    //第三步：倒蔬菜是不一样的（一个下包菜，一个是下菜心）
    public abstract void pourVegetable();

    //第四步：倒调味料是不一样
    public abstract void pourSauce();


    //第五步：翻炒是一样的，所以直接实现
    public void fry(){
        System.out.println("炒啊炒啊炒到熟啊");
    }
}

public class ConcreteClass_BaoCai extends AbstractClass {

    @Override
    public void pourVegetable() {
        System.out.println("下锅的蔬菜是包菜");
    }

    @Override
    public void pourSauce() {
        System.out.println("下锅的酱料是辣椒");
    }
}

public class ConcreteClass_CaiXin extends AbstractClass {
    @Override
    public void pourVegetable() {
        System.out.println("下锅的蔬菜是菜心");
    }

    @Override
    public void pourSauce() {
        System.out.println("下锅的酱料是蒜蓉");
    }
}

public class Client {
    public static void main(String[] args) {
        //炒手撕包菜
        ConcreteClass_BaoCai baoCai = new ConcreteClass_BaoCai();
        baoCai.cookProcess();

        //炒蒜蓉菜心
        ConcreteClass_CaiXin caiXin = new ConcreteClass_CaiXin();
        caiXin.cookProcess();
    }
}

public abstract class InputStream implements Closeable {
    //抽象方法，要求子类必须重写
    public abstract int read() throws IOException;

    public int read(byte b[]) throws IOException {
        return read(b, 0, b.length);
    }

    public int read(byte b[], int off, int len) throws IOException {
        if (b == null) {
            throw new NullPointerException();
        } else if (off < 0 || len < 0 || len > b.length - off) {
            throw new IndexOutOfBoundsException();
        } else if (len == 0) {
            return 0;
        }

        int c = read(); //调用了无参的read方法，该方法是每次读取一个字节数据
        if (c == -1) {
            return -1;
        }
        b[off] = (byte)c;

        int i = 1;
        try {
            for (; i < len ; i++) {
                c = read();
                if (c == -1) {
                    break;
                }
                b[off + i] = (byte)c;
            }
        } catch (IOException ee) {
        }
        return i;
    }
}

public interface Strategy {
    void show();
}

//为春节准备的促销活动A
public class StrategyA implements Strategy {

    public void show() {
        System.out.println("买一送一");
    }
}

//为中秋准备的促销活动B
public class StrategyB implements Strategy {

    public void show() {
        System.out.println("满200元减50元");
    }
}

//为圣诞准备的促销活动C
public class StrategyC implements Strategy {

    public void show() {
        System.out.println("满1000元加一元换购任意200元以下商品");
    }
}

public class SalesMan {                        
    //持有抽象策略角色的引用                              
    private Strategy strategy;                 
                                               
    public SalesMan(Strategy strategy) {       
        this.strategy = strategy;              
    }                                          
                                               
    //向客户展示促销活动                                
    public void salesManShow(){                
        strategy.show();                       
    }                                          
}                                              

public class Arrays{
    public static <T> void sort(T[] a, Comparator<? super T> c) {
        if (c == null) {
            sort(a);
        } else {
            if (LegacyMergeSort.userRequested)
                legacyMergeSort(a, c);
            else
                TimSort.sort(a, 0, a.length, c, null, 0, 0);
        }
    }
}

public class demo {
    public static void main(String[] args) {

        Integer[] data = {12, 2, 3, 2, 4, 5, 1};
        // 实现降序排序
        Arrays.sort(data, new Comparator<Integer>() {
            public int compare(Integer o1, Integer o2) {
                return o2 - o1;
            }
        });
        System.out.println(Arrays.toString(data)); //[12, 5, 4, 3, 2, 2, 1]
    }
}

class TimSort<T> {
    static <T> void sort(T[] a, int lo, int hi, Comparator<? super T> c,
                         T[] work, int workBase, int workLen) {
        assert c != null && a != null && lo >= 0 && lo <= hi && hi <= a.length;

        int nRemaining  = hi - lo;
        if (nRemaining < 2)
            return;  // Arrays of size 0 and 1 are always sorted

        // If array is small, do a "mini-TimSort" with no merges
        if (nRemaining < MIN_MERGE) {
            int initRunLen = countRunAndMakeAscending(a, lo, hi, c);
            binarySort(a, lo, hi, lo + initRunLen, c);
            return;
        }
        ...
    }   
        
    private static <T> int countRunAndMakeAscending(T[] a, int lo, int hi,Comparator<? super T> c) {
        assert lo < hi;
        int runHi = lo + 1;
        if (runHi == hi)
            return 1;

        // Find end of run, and reverse range if descending
        if (c.compare(a[runHi++], a[lo]) < 0) { // Descending
            while (runHi < hi && c.compare(a[runHi], a[runHi - 1]) < 0)
                runHi++;
            reverseRange(a, lo, runHi);
        } else {                              // Ascending
            while (runHi < hi && c.compare(a[runHi], a[runHi - 1]) >= 0)
                runHi++;
        }

        return runHi - lo;
    }
}

public interface Command {
    void execute();//只需要定义一个统一的执行方法
}

public class OrderCommand implements Command {

    //持有接受者对象
    private SeniorChef receiver;
    private Order order;

    public OrderCommand(SeniorChef receiver, Order order){
        this.receiver = receiver;
        this.order = order;
    }

    public void execute()  {
        System.out.println(order.getDiningTable() + "桌的订单：");
        Set<String> keys = order.getFoodDic().keySet();
        for (String key : keys) {
            receiver.makeFood(order.getFoodDic().get(key),key);
        }

        try {
            Thread.sleep(100);//停顿一下 模拟做饭的过程
        } catch (InterruptedException e) {
            e.printStackTrace();
        }


        System.out.println(order.getDiningTable() + "桌的饭弄好了");
    }
}

public class Order {
    // 餐桌号码
    private int diningTable;

    // 用来存储餐名并记录份数
    private Map<String, Integer> foodDic = new HashMap<String, Integer>();

    public int getDiningTable() {
        return diningTable;
    }

    public void setDiningTable(int diningTable) {
        this.diningTable = diningTable;
    }

    public Map<String, Integer> getFoodDic() {
        return foodDic;
    }

    public void setFoodDic(String name, int num) {
        foodDic.put(name,num);
    }
}

// 资深大厨类 是命令的Receiver
public class SeniorChef {

    public void makeFood(int num,String foodName) {
        System.out.println(num + "份" + foodName);
    }
}

public class Waitor {

    private ArrayList<Command> commands;//可以持有很多的命令对象

    public Waitor() {
        commands = new ArrayList();
    }
    
    public void setCommand(Command cmd){
        commands.add(cmd);
    }

    // 发出命令 喊 订单来了，厨师开始执行
    public void orderUp() {
        System.out.println("美女服务员：叮咚，大厨，新订单来了.......");
        for (int i = 0; i < commands.size(); i++) {
            Command cmd = commands.get(i);
            if (cmd != null) {
                cmd.execute();
            }
        }
    }
}

public class Client {
    public static void main(String[] args) {
        //创建2个order
        Order order1 = new Order();
        order1.setDiningTable(1);
        order1.getFoodDic().put("西红柿鸡蛋面",1);
        order1.getFoodDic().put("小杯可乐",2);

        Order order2 = new Order();
        order2.setDiningTable(3);
        order2.getFoodDic().put("尖椒肉丝盖饭",1);
        order2.getFoodDic().put("小杯雪碧",1);

        //创建接收者
        SeniorChef receiver=new SeniorChef();
        //将订单和接收者封装成命令对象
        OrderCommand cmd1 = new OrderCommand(receiver, order1);
        OrderCommand cmd2 = new OrderCommand(receiver, order2);
        //创建调用者 waitor
        Waitor invoker = new Waitor();
        invoker.setCommand(cmd1);
        invoker.setCommand(cmd2);

        //将订单带到柜台 并向厨师喊 订单来了
        invoker.orderUp();
    }
}

//命令接口(抽象命令角色)
public interface Runnable {
	public abstract void run();
}

//调用者
public class Thread implements Runnable {
    private Runnable target;
    
    public synchronized void start() {
        if (threadStatus != 0)
            throw new IllegalThreadStateException();

        group.add(this);

        boolean started = false;
        try {
            start0();
            started = true;
        } finally {
            try {
                if (!started) {
                    group.threadStartFailed(this);
                }
            } catch (Throwable ignore) {
            }
        }
    }
    
    private native void start0();
}

/**
 * jdk Runnable 命令模式
 *		TurnOffThread ： 属于具体
 */
public class TurnOffThread implements Runnable{
     private Receiver receiver;
    
     public TurnOffThread(Receiver receiver) {
     	this.receiver = receiver;
     }
     public void run() {
     	receiver.turnOFF();
     }
}

/**
 * 测试类
 */
public class Demo {
     public static void main(String[] args) {
         Receiver receiver = new Receiver();
         TurnOffThread turnOffThread = new TurnOffThread(receiver);
         Thread thread = new Thread(turnOffThread);
         thread.start();
     }
}

//请假条
public class LeaveRequest {
    private String name;//姓名
    private int num;//请假天数
    private String content;//请假内容

    public LeaveRequest(String name, int num, String content) {
        this.name = name;
        this.num = num;
        this.content = content;
    }

    public String getName() {
        return name;
    }

    public int getNum() {
        return num;
    }

    public String getContent() {
        return content;
    }
}

//处理者抽象类
public abstract class Handler {
    protected final static int NUM_ONE = 1;
    protected final static int NUM_THREE = 3;
    protected final static int NUM_SEVEN = 7;

    //该领导处理的请假天数区间
    private int numStart;
    private int numEnd;

    //领导上面还有领导
    private Handler nextHandler;

    //设置请假天数范围 上不封顶
    public Handler(int numStart) {
        this.numStart = numStart;
    }

    //设置请假天数范围
    public Handler(int numStart, int numEnd) {
        this.numStart = numStart;
        this.numEnd = numEnd;
    }

    //设置上级领导
    public void setNextHandler(Handler nextHandler){
        this.nextHandler = nextHandler;
    }

    //提交请假条
    public final void submit(LeaveRequest leave){
        if(0 == this.numStart){
            return;
        }

        //如果请假天数达到该领导者的处理要求
        if(leave.getNum() >= this.numStart){
            this.handleLeave(leave);

            //如果还有上级 并且请假天数超过了当前领导的处理范围
            if(null != this.nextHandler && leave.getNum() > numEnd){
                this.nextHandler.submit(leave);//继续提交
            } else {
                System.out.println("流程结束");
            }
        }
    }

    //各级领导处理请假条方法
    protected abstract void handleLeave(LeaveRequest leave);
}

//小组长
public class GroupLeader extends Handler {
    public GroupLeader() {
        //小组长处理1-3天的请假
        super(Handler.NUM_ONE, Handler.NUM_THREE);
    }

    @Override
    protected void handleLeave(LeaveRequest leave) {
        System.out.println(leave.getName() + "请假" + leave.getNum() + "天," + leave.getContent() + "。");
        System.out.println("小组长审批：同意。");
    }
}

//部门经理
public class Manager extends Handler {
    public Manager() {
        //部门经理处理3-7天的请假
        super(Handler.NUM_THREE, Handler.NUM_SEVEN);
    }

    @Override
    protected void handleLeave(LeaveRequest leave) {
        System.out.println(leave.getName() + "请假" + leave.getNum() + "天," + leave.getContent() + "。");
        System.out.println("部门经理审批：同意。");
    }
}

//总经理
public class GeneralManager extends Handler {
    public GeneralManager() {
        //部门经理处理7天以上的请假
        super(Handler.NUM_SEVEN);
    }

    @Override
    protected void handleLeave(LeaveRequest leave) {
        System.out.println(leave.getName() + "请假" + leave.getNum() + "天," + leave.getContent() + "。");
        System.out.println("总经理审批：同意。");
    }
}

//测试类
public class Client {
    public static void main(String[] args) {
        //请假条来一张
        LeaveRequest leave = new LeaveRequest("小花",5,"身体不适");

        //各位领导
        GroupLeader groupLeader = new GroupLeader();
        Manager manager = new Manager();
        GeneralManager generalManager = new GeneralManager();

        groupLeader.setNextHandler(manager);//小组长的领导是部门经理
        manager.setNextHandler(generalManager);//部门经理的领导是总经理
        //之所以在这里设置上级领导，是因为可以根据实际需求来更改设置，如果实战中上级领导人都是固定的，则可以移到领导实现类中。

        //提交申请
        groupLeader.submit(leave);
    }
}