原创 把用某符號分隔的字符串轉換成數組
常見的一道面試題：把某某符號（“，”或 “#”）分隔的字符串轉換成一個數組。 思路有兩個： （1）使用split()函數 （2）StringTokenizer 舉例：一個字符串str用逗號分隔爲：“aa,bb,cc,dd,ee,ff,g
2020-06-19 00:16:44
原创 Formatting
You should take care that your code is nicely formatted. You should choose a set of simple rules that govern the format
2020-06-19 00:16:28
原创 在Java中避免“!= null”語句？
原問題： 我整天都在用Java工作。在用Java編程時用的最多的語句（或者說代碼片段），就是在使用一個對象前，我都會先測試object != null（對象是否爲空）這是爲了避免拋空指針（NullPointerException） 的錯
2020-06-19 00:16:28
原创 Basics of Apache Ant
what is Ant？ （Ant是什麼） Apache Ant is a Java-based build tool whose mission is to drive processes described in build fil
2020-06-19 00:16:28
原创 開源slides工具
there's a javascript framework for making slides in HTML+CSS, if you are a web developer https://github.com/gnab/remark
2020-06-18 22:35:27
原创 Interview and English(2)
Question about Agile 1. Q: What are the benefits of Agile Software development? A: Agile methods grew out of the real
2020-02-24 18:10:16
原创 Tools for Java programmers(2015)-2
5) Visualvm VisualVM is a visual tool integrating several commandline JDK tools and lightweight profiling capabilit
2020-02-24 18:10:16
原创 about nodejs(2)
Intro from official website: Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scala
2020-02-24 18:10:16
原创 Tools for Java programmers(2015)-1
Best Java Tools you should know about in year 2015. 1) SparkJava SparkJava is new, lightweight and powerful web applic
2020-02-24 18:10:16
原创 Meaningful Names
We name variables, argumeants, classes and packages. We name source files and directories that contain them. We name ja
2020-02-24 18:10:16
原创 Error Handling
Use Exceptions Rather Than Return Codes Use Unchecked Exceptions Define the Normal Flow
2020-02-24 18:10:16
原创 Comments
Comments Do Not Make u for bad code Exlain yourself in code good comments
2020-02-24 18:10:16
原创 如何在Java中進行字符串（String）比較
一直以來我都是用“ ==” 操作符來比較字符串。但是，我遇到了一個錯誤，用 .equals() 替換了一個 == 操作符，錯誤就解決了。 == 是不好的咩？ 到底應不應該用它？ 用不用的區別是什麼？ -------------------
2020-02-24 18:10:16
原创 Interview and English(1)
When an interview question is asked in English, will it be diffcult to answer? Found someting about how to answer top j
2020-02-24 18:10:16
原创 Objects and Data Structures
Data Abstraction Data/Objects Anti-Symmetry The Law of Eemeter Data Transfer Objects
2020-02-24 18:10:16