每天紧张的学习、复习已经成了一种习惯，今天比较早完成作业，上传一下，日后自己也可以看看是否有更好的方案。
作业1、打印一句话：老师是个大帅哥！ （隔一秒输出一个字）
作业2、自定义一个同步锁。
package Day18;
import java.util.ArrayList;
public class Day18 implements Runnable{
Meeting meeting = new Meeting();
public static void main(String[] args) {
/*
//1、打印一句话：老师是个大帅哥！ （隔一秒输出一个字）
String str = "老师是个大帅哥！";
for (int i = 0;i < str.length();i++) {
String substr = str.substring(i,i + 1);
System.out.print(substr);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("");
*/
//2、自定义同步，练习同步锁。
Day18 day18 = new Day18();
Thread thread1 = new Thread(day18);
Thread thread2 = new Thread(day18);
Thread thread3 = new Thread(day18);
Thread thread4 = new Thread(day18);
Thread thread5 = new Thread(day18);
Thread thread6 = new Thread(day18);
thread1.setName(" 孙悟空 ");
thread2.setName(" 猪八戒 ");
thread3.setName(" 唐 僧 ");
thread4.setName("玉皇大帝 ");
thread5.setName(" 如 来 ");
thread6.setName(" 蜘蛛精 ");
thread3.setPriority(Thread.NORM_PRIORITY + 5);
thread1.start();
thread2.start();
thread3.start();
thread4.start();
thread5.start();
thread6.start();
}
@Override
public void run() {
meeting.getRoom(Thread.currentThread().getName());
// meeting.giveupRoom(Thread.currentThread().getName());
}
}
class Meeting {
int roomnumber = 4;
ArrayList<String> person = new ArrayList<String>();
public void getRoom (String chairman) {
synchronized(this) {
if (this.roomnumber > 0) {
roomnumber -= 1;
try {
Thread.sleep(30);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(chairman + "：您已成功预订会议室，目前会议室还有" + roomnumber + "间。");
person.add(chairman);
} else {
System.out.println(chairman + "：您预订迟了，目前已无会议室");
}
}
}
}