1.9 创建一个匿名的类

public class Linker {
public class LinkedNode {
LinkedNode prev, next;
Object contents;
}
public Linker() {
LinkedNode first = new LinkedNode();
LinkedNode second = new LinkedNode();
first.next = second;
first.contents = "This is the first item";
second.prev = first;
second.contents = "This is the second item";
}
}   

public class Happiness {
interface Smiler { public void smile(); }
public static void main(String[] args)
{
class Happy implements Smiler {
private String more = "";
public void smile() {
System.out.println(":-)" + more);
}
public void happier() {
more += ")";
}
}
Happy h1 = new Happy();
h1.smile();
Happy h2 = new Happy();
h2.happier();
h2.smile();
}
} 

Runnable runner = new Runnable(); // not allowed!  

Runnable runner = new Runnable() {
public void run() {
for (int i=0; i<10000000; i++) {
countSheep();
}
}
};

Object timePrinter = new Object() {
public String toString() {
return String.valueOf(System.currentTimeMillis());
}
};
System.out.println(timePrinter);