add hash table
implements a simple map
remove public declare in interface
implement with entrys
add max sum of continuous subsequence
add answer
add binary search, left and right
biggest number merged
add synchronized class
Merge branch 'master' of file:///d/git/java-demo
biggest number
synchronize with the dependent attributes
producer and consumer
package info
add buffer, producer, consumer
then try
finish producer and consumer
lock
use the ReentrantLock
useless import
test case implements for read write cases