2011/12/31

11 Things every Software Developer should be doing in 2012

›
1. Get on Twitter 2. Read StackOverflow Daily 3. Start a Blog 4. Get out there 5. Carry around a modern phone 6. Embrace Mob...
2011/12/30

Preventative medicine for Memory leaks in Java

›
How to avoid memory leaks?     To avoid memory leaks, We must check our applications to make sure the below: Our app ought to release...
2011/12/29

Improve Software Quality with Tools and Processes

›
Choose a suitable process model and apply it correctly, ex. agile ,  scrum ,  iterative and incremental Control the version of each req...
2011/12/28

善用Oracle提供的function來提升系統效能

›
有關報表的日期欄位，資料庫是儲存成yyyMMDD or yyyMM。 根據現有需求，需formatting成 YYY/MM或者是YYY/MM/DD格式， 因為效能考量，此類的formatting應 在SQL裡頭做 ，不要放到AP level做。 舉個例子來說 ...
2011/12/22

Are You Making These 7 Productivity Mistakes?

›
Mistake #1: Cutting Back on Sleep Mistake #2: Multi-Tasking Mistake #3: Doing Everything Yourself Mistake #4: Focusing Solely on Numbe...

No output specified for the exporter

›
Problem As I would like to export pdf via JasperReports JRExporter, it throw " No output specified for the exporter " exception. ...

How to apply 1000 separator in data field

›
需求 在數字或者是金額等欄位，需要做到千分位隔開，如1000，要顯示1,000 作法 1. 到特定欄位按右鍵，選擇Field Pattern 2. 選擇Number, 將"User 1000 Separator"打勾，再按Apply ...

REPORT_COUNT vs. [group name]_COUNT

›
需求 在產出的報表的每筆資料的第一個column，指定序號 產出結果如下 一般來說，只要將REPORT_COUNT此欄位拉到iReport即可 但是在NIG071此張報表中，若到下一頁，他會把值reset，從1開始 會造成此問題的原因，是因為此報表有用到 ...

Oracle/PLSQL: Case Statement

›
Requirement 到NIGT001與NIGT005，根據前端條件輸入結果產出報表 報表內容包含違章編號、統一編號、議程類別等欄位，其中有幾個欄位是經過if-else判斷是得來的，如作業代號、案況、會次等 AS-IS 現有VB/Cobol在NIG335的作法...
2011/12/20

HashMap vs. LinkHashMap

›
Problem 在報表的開發上，剛好遇到一個問題，我同時要餵資料給兩張iReport template(i.e. P1, P2)，然後後端用for loop將裡頭的資料抓出來 ，原本的方式 : 1: Map dataMap = new HashMap (); 2: ...
2011/11/18

2011/11/12-17 京都大阪六日遊

›
耶誕節氣氛漸濃 道頓崛 大阪城 梅田夜景 東福寺楓紅 哲學之道 京都某處楓紅 銀閣寺楓紅 八阪神社 從清水寺遠眺kyoto tower 楓紅配藍天
2011/10/30

Top Ten Idea Killers in Software Development

›
Source: http://www.computer.org/portal/web/buildyourcareer/Nosce-te-Ipsum/-/blogs/top-ten-idea-killers-in-software-development 10. ...

Subversion Best Practices: Repository Structure

›
http://blogs.wandisco.com/2011/10/24/subversion-best-practices-repository-structure/?=kt_tw
2011/10/24

Grouping Data in Reports

›
Report groups are a flexible way to show grouped data based on one or more certain fields, or even on generic expression, that is, a group c...

How to start group data on a new page

›
Problem I had some problems as  I built a group by report 1. Each group data should start on a new page. 2. page number should be reset ...
2011/10/13

How to Prevent a SQL Injection Attack

›
Reference:  http://www.dzone.com/links/r/how_to_prevent_a_sql_injection_attack.html 1. Patch your SQL server regularly 2. Limit the use...
2011/10/11

How to add record sequence number in JasperReports

›
Requirement I would like to add record sequence number in the first column. How to do it? 1. Open iReport 2. Utilize the build-in vari...
2011/10/10

Be a Better Java Programmer: A Reading List by Binu John

›
Reference:  http://www.informit.com/articles/article.aspx?p=1757633