Java的泛型初窥

 

 读专栏Thinking In Java高级： http://blog.csdn.net/column/details/javainterview.html

 

http://www.programcreek.com/java-tutorials/  Program Creek: Java tutorials

Top 8 Diagrams for Understanding Java

http://www.programcreek.com/2013/09/top-8-diagrams-for-understanding-java/

（1）HashCode和Equals 

（2）Oracle中的index有bitmap, btree两种索引，请比较它们

@SuppressWarnings("unchecked")public static <T extends Message> T receive(ObjectOutputStream out, ObjectInputStream in) throws Exception {// Receive (wait for) an objectObject recObject = in.readObject();// Send a confirmation feedback//out.writeObject(OK_CODE);return (T) recObject;}