http://www.cnblogs.com/davelet/archive/2011/12/08/2280631.html
答案：
1.
double i = Double.MAX_VALUE;
2.
double i = Double.NaN;
3.
String i = "";
4.
byte i = -1;
5.
Integer i = 100;
Integer j = new Integer(100);
6.
Integer i = Integer.MIN_VALUE;
