IO和网络_4月6日
// 懒汉单例 DCL double check lock
public class MyLazy {
private static MyLazy myLazy;
private MyLazy(){
System.out.println("new MyLazy()");
}
public static MyLazy getInstance(){
if(myLazy == null){
synchronized (MyLazy.class){
if(myLazy==null){
myLazy = new MyLazy();
}
}
}
return myLazy;
}
}
// 饿汉单例
public class MyHungry {
private final static MyHungry myHungry = new MyHungry(); // final 所以一直指向它，其实也没人修改它的地址
private MyHungry(){
System.out.println("new MyHungry()");
}
public static MyHungry getInstance(){
return myHungry;
}
}
// new Thread 操作
new Thread() {
@Override
public void run() {
System.out.println("new Thread()");
}
}.start();
new Thread(new Runnable() {
@Override
public void run() {
System.out.println(Thread.currentThread().getName());
System.out.println("new Thread(new Runnable(){");
}
}, "RunnableThread").start();
网络通信不是主机之间，而是进程之间
Client Server
Browser Server
单例模式
饿汉 private get()
懒汉 double check lock 之后再 new
queue.notify();
queue.wait();
queue.remove();
阴影
I shall be your eyes
死亡骑士
I am the Darkness
As you order
At last
For the Lich King
Ride or die
恐惧魔王
Greetings
What is it now?
Agreed
Very well
Die
I hunger
地穴领主
Speak
侍僧
I wish only to serve
Yes, Master
