2011/07/30

Java Tools: Source Code Optimization and Analysis

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Below is a list of some tools that can help you examine your Java source code for potential problems: http://www.javacodegeeks.com/2...
2011/07/29

[Java] 字串半型轉全型

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Problem 使用者希望所輸入的地址，在存入資料庫的時候，能夠將數字的部份轉成全型，這樣列印起來比較美觀。 How-To 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 ...
2011/07/28

Handling JPA lifecycle event using listeners and callbacks

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Problem As we manipulate table, we need to insert values into user id(使用者代號), timestamp(西元年) and update date(民國年) as we do insert or update...

Using jQuery and Ajax to load sub-sections of a webpage

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Ajax powered tab sets Tabs can; broadly-speaking, be loaded in three different ways: Immediately loaded – i.e. when the webpage has loaded,...
2011/07/26

Controlling the width/height of the button

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Problem By default, the dimensions of the button is automatically set to the dimensions required to accommodate the content inside, such as ...

The Principles of Good Programming

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http://www.artima.com/weblogs/viewpost.jsp?thread=331531 1. DRY - Don’t repeat yourself 2. Abstraction Principle 3. KISS (Keep it simple, s...
2011/07/25

Building DropDown Menu Using jQuery and JSON

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Scenario We have six dropdown menus where we populate violation number (違章編號) and will be triggered on onBlur event. Screenshot jQuer...

Eugene H. Krabs

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昨天看到一本書，上面是這樣寫的：『當一個人被剝奪做出重要決策的機會，它就會開始把所有能做的決定，都當 成是重要決策。他會開始挑剔歸檔的方式，強烈希望每支鉛筆都被削的很尖，渴望確定窗戶事打開（或關上）的， 並且傾向使用兩到三種不同顏色的筆。』 ㄎㄎㄎ，有點身歷其境的感覺唷
2011/07/22

Project Plan

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長官們往往把規劃擱置一旁，總是先做當天沒這麼重要卻比較緊急的工作。 最後，等到不能再拖下去的時候，就匆匆忙忙地為重大任務訂出計畫，然後很不明智的把拙劣的計畫變成具體的、不能改變的目標，進而帶領團隊往這個目標前進。結果，任務還沒開始正式執行，整個團隊就因為準備不周而筋疲力竭。

緊急 != 重要

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緊急的事情，不等於重要的事情。 常常總是在下午三、四點接到email，要在下午五點以前繳交報告或統計數據。此時，就要放下手邊重要的事情，去做長官交辦的緊急的事情，反倒讓重要的事情進度落後，長官在回過頭來檢討為什麼進度落後。這樣豈不荒謬、可笑！

Project Delay

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在專案進度嚴重落後時，長官們總是為了要更進一步掌控各個組別的細部進度，了解問題出在哪裡，導致開會次數與報告書變多，因此最重要的工作反而無法進行。更嚴重的是，工作場所的工作氣氛會變得更惡劣，員工的工作動機也會下降，反而讓專案進度更加落後。 這樣的錯誤，總是在不同的公司，重複上演，沒...

Building Auto-Completion Using jQuery and JSON

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Scenario As I filled in violation number, system should fill out its related column on onBlur event of violation number(違章編號). [it will r...
2011/07/21

Wrapping JPQL Query Results with Instances of Custom Result Classes

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JPA supports wrapping JPQL query results with instances of custom result classes. This is mainly useful for queries with multiple SELECT exp...
2011/07/19

Avoid Producing Unnecessary Empty Columns as Export CSV File

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Problem it's our report resign in iReport export to csv file it has many unnecessary empty columns in csv file Root Caluse / Solution Be...

Fail to Concat String with $V{PAGE_NUMBER}

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Problem I would like to concat String with $V{PAGE_NUMBER} As I want to do preview in iReport, it show this error message in iReport consol...
2011/07/13

Apache Tiles Quick Start

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Tiles concepts Tiles is an implementation of the Composite View pattern. Tiles adds to this pattern its own concepts to make the pattern co...