Use of communication between the threads to achieve the water drainage tank

Business requirements, water speed 5l/s, discharge speed 2l/s, water can not be added, water can not be added, pool capacity 500L

Class Pool{int volume = 0;int maxvolume = 500;int Waterinspeed = 5;int Wateroutspeed = 2;boolean flag = false;} Class Waterin extends Thread{pool pool = new pool (), int temp = 0;//constructor public waterin (pool pool) {this.pool = Pool;}  @Overridepublic void Run () {while (true) {synchronized (pool) {if (!pool.flag) {try {Thread.Sleep (10)};  } catch (Interruptedexception e) {//TODO auto-generated catch block E.printstacktrace ();  } if (Pool.volume < Pool.maxvolume) {pool.volume + = Pool.waterinspeed;    if (temp++%10 = = 0) {System.out.println ("Pool plus water to:" +pool.volume);  }} else{System.out.println ("The Water is full" +pool.volume);  Pool.flag = true;  Pool.notify (); }}else{try {pool.wait ();} catch (Interruptedexception e) {//TODO auto-generated catch Blocke.printstacktrace ();}}}} }class Waterout extends Thread{pool pool = new Pool (); int temp;//constructor public waterout (pool pool) {This.pool = pool;} @Overridepublic void Run () {while (true) {synchronized (pool) {///identifies if (Pool.flag) {if (pool.volume>0) {Pool.volume-=pool.wateroutspeed;    if (temp++%20 = = 0) System.out.println ("Water has been put into" +pool.volume);  }else{System.out.println ("The water has been put out" +pool.volume);  Pool.flag = false;  Pool.notify ();  }}else{try {pool.wait ()} catch (Interruptedexception e) {//TODO auto-generated catch Blocke.printstacktrace ();} }  }  }}

　　

Pool Pool =new pool (); Waterin in =new waterin (pool); Waterout out = new Waterout (pool); In.start (); Out.start ();

　　

Use of communication between the threads to achieve the water drainage tank