08 2014 档案

[Java Basics2] Iterable, Socket, Reflection, Proxy, Factory DP

摘要：Parent interface of Collection: Iterable InterfaceA class that implements theIterablecan be used with the new for-loop.TheIterableinterface has only o... 阅读全文

posted @ 2014-08-26 18:40 chayu3 阅读(335) 评论(0) 推荐(0)

[SQL Basics] Indexes

摘要：An index is used to speed up searching in the database.By default, when you create this table, your data will be stored on disk and sorted by the "Id"... 阅读全文

posted @ 2014-08-25 21:20 chayu3 阅读(173) 评论(0) 推荐(0)

[Int Basics] coding & OO questions

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posted @ 2014-08-22 19:01 chayu3 阅读(4) 评论(0) 推荐(0)

[DS Basics] Data structures

摘要：1, LinkedListcomposed of one and one Node: [data][next].[head] ->[data][next] ->[data][next] ->[data][next] -> [null].Empty linkedList: head == null.V... 阅读全文

posted @ 2014-08-21 22:11 chayu3 阅读(134) 评论(0) 推荐(0)

[Algorithm Basics] Search

摘要：1, Binary SearchOn sorted array!public static int binarySearch(int e, int[] array, int low, int high) { while(low array[mid] && e array[low]) ... 阅读全文

posted @ 2014-08-21 21:58 chayu3 阅读(106) 评论(0) 推荐(0)

[Algorithm Basics] Sorting, LinkedList

摘要：Time complexity:Binary search O(log2 n):i=0. n elements: -------------------i=1. n/2 elements: ----------i=2. n/4 elements: ... 阅读全文

posted @ 2014-08-21 21:51 chayu3 阅读(209) 评论(0) 推荐(0)

[Java Basics] multi-threading

摘要：1, Process&ThreadsMost implementations of the Java virtual machine run as a single process.Threads exist within a process — every process has at least... 阅读全文

posted @ 2014-08-19 22:42 chayu3 阅读(301) 评论(0) 推荐(0)

[Java Basics] Reflection

摘要：For every type of object, the Java virtual machine instantiates an immutable instance ofjava.lang.Classwhich provides methods to examine the runtime p... 阅读全文

posted @ 2014-08-13 23:43 chayu3 阅读(98) 评论(0) 推荐(0)

[Java Basics] Collection

摘要：除了Java collection class/interface外，方便的有Google guava的utility class: Lists/Sets/Maps/Queues, 用它们可以方便地创建List等object。List list = Lists.newArrayList(); or ... 阅读全文

posted @ 2014-08-13 22:43 chayu3 阅读(200) 评论(0) 推荐(0)

SSH basics

摘要：SSH, SecureSHell, was designed and created to provide the best security when accessing another computer remotely.Not only does it encrypt the remote s... 阅读全文

posted @ 2014-08-12 17:17 chayu3 阅读(120) 评论(0) 推荐(0)

[Java Basics] Stack, Heap, Constructor, I/O, Immutable, ClassLoader

摘要：Good about Java:friendly syntax, memory management[GC can collect unreferenced memory resources], object-oriented features, portability.StackStores me... 阅读全文

posted @ 2014-08-08 22:03 chayu3 阅读(203) 评论(0) 推荐(0)

[Camel Basics]

摘要：Define routes:Either using Spring xml or Java DSL.Spring xml: //to load the Java DSL routes defined in MyRouteBuilder class //to load the routes... 阅读全文

posted @ 2014-08-08 21:12 chayu3 阅读(278) 评论(0) 推荐(0)

Unix command 积累

摘要：UNIX is a multi-user multitasking-optimized operating system that can run on various hardware platforms.Linux is basically an open-source clone of UNI... 阅读全文

posted @ 2014-08-07 22:35 chayu3 阅读(404) 评论(0) 推荐(0)

Google protobuf

摘要：个人理解:定义.proto文件就是指明消息里包含的成员和类型，protoc会compile成相应的java文件包含interface和implementation class，然后在构建message的时候要使用builder，然后写到outputstream里。应用实例：ByteArrayOutp... 阅读全文

posted @ 2014-08-05 22:16 chayu3 阅读(245) 评论(0) 推荐(0)