random notes from Java quiz night at StL Java User Group

Some of my notes after having participated in StL Java User Group Java Quiz
java.io
Interface Closeable

I learned that class file 'magic number' is CAFE BABE

java.sql.DriverManager !

execute, executeQuery, executeUpdate and executeBatch on Statement.

ListIterator

name three methods of java.util.Arrays

java.util.concurrent.atomic.AtomicInteger

java.util.concurrent
Interface ScheduledExecutorService

Java 7's JSR 292

javax.persistence
Interface EntityManager