Quick way to build prototypes - Moqups

Official site - https://moqups.com/home/

Moqups is a nifty HTML5 App used to create wireframes, mockups or UI concepts, prototypes depending on how you like to call them.

You can use Moqups to build prototype quickly to confirm user requirement as bellowing:

2013-14 日本八天七夜

橫濱夜景

東京鐵塔

原宿街頭

皇居

吾妻橋夜景

東京天空樹

東京車站夜景

台場夜景

淺草寺

六本木夜景

六本木大蜘蛛

Solution to ORA-00911(invalid character, 字元無效)

Problem
As I would like to execute an insert SQL statement, it throws ORA-00911 error. After googling, it recommend to "remove the invalid character from the statement or enclose the object name in double quotation marks". 
But the insert SQL statement is working fine in SQL Developer, only failed in java program.

Solution
Remove the semi-colon in the end of SQL statement.

Cannot Import Java Source Code via Astah Pro

Problem
When I used Astah Pro to do import java code

But it show the error which complain encoding issues:


Solution
As we do import java code, we need to set the property of "Charset of imported files" to UTF-8.

Then we can import Java source code successfully.

An internal error occurred during: "Initializing Java Tooling" from Eclipse

Problem
One day as I startup my eclipse it show the error as bellows:

Solution

Step1. Close Eclipse

Step2. Go to your eclipse workspace, and go to this directory

 %workspace%/.metadata/.plugins/org.eclipse.jdt.core/  

ex.

Step3. delete variablesAndContainers.dat

Step4. Start Eclipse

How to pad a string with spaces when size of data is unknown in Microsoft SQL Server

Requirement
When I select a character data with varchar(6) from Microsoft SQL Server....

And these data should have fixed length in report.
If the data is 01, it should right pad with 4 spaces.
If the data is 01234, it should right pad with 1 space.

Solution
If we would like to meet this requirement in SQL Server, we can use 'CAST' function which provided by SQL Server

select cast(repno as char(6)) from NSS313FA  

Utilizing cast function in SQL statement, you can get fixed length in report no matter how long the data is.

   

You can get further information in http://technet.microsoft.com/en-us/library/aa226054(v=sql.80).aspx

How to display column footer immediately without any spaces after details band

Problem
This is my report design in iReport:

Here is the Detail property and Column Footer property setting:

But...as I generate pdf, there has unnecessary spaces between Detail band and Column Footer band.

Solution

Step1. Right click --> property

Step2. Check the "Float column footer" property

Then this problem will be solved. There will not have any spaces between Detail band and Column Footer band.

Why I can't print dashed lines?

Problem
This is my setting in iReport. The line had been set as dashed line.

And you can see the dashed line in chrome pdf viewer

But as I print this pdf file, I cannot see the dashed line!

Root Cause
It may result from some problem in Chrome PDF Viewer.

Solution
Go to chrome://plugins/
 Disable Chrome PDF Viewer and Enable Adboe Reader

Then click the print button.

See...the dashed line had shown in my paper

Why can't I save PDF in Chrome?

Problem
My chrome version is up-to-date.

But why I can't save PDF after viewing it within Chrome, the save button does not work.


Root Cause
It may result from some problem in Chrome PDF Viewer.

Solution
Go to chrome://plugins/
 Disable Chrome PDF Viewer and Enable Adboe Reader

Then the save button is working now!

How to convert the amount from Arabic numerals to Chinese number (如何將阿拉伯數字金額轉大寫國字)

Requirement
In our payment slip, we need to convert the amount from Arabic numerals to Chinese number. ex. 325250 will be converted to 參拾貳萬伍仟貳佰伍拾.

Solution
Here has a utility method to do conversion.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

/** * Convert to Chinese amount * * @param amount * the amount * @return the string */ public static String convertToChineseAmt(Long amount) { String num[] = { "零", "壹", "貳", "參", "肆", "伍", "陸", "柒", "捌", "玖" }; String xx[] = { "拾", "佰", "仟" }; String yy[] = { "萬", "億", "兆", "京" }; String chineseAmt = ""; int i; int temp; boolean first = true; boolean zero = false; for (i = 0; (int) (amount / (long) Math.pow(10, i)) != 0; i++) { ;// 計算位數i } if (i == 0) { return num[0]; } for (int k = (i - 1) / 4; k >= 0; k--) { temp = (int) ((amount / (long) Math.pow(10, 4 * k)) % (int) Math.pow(10, 4)); if (temp == 0) { zero = true; continue; } for (int x = 3; x >= 0; x--) { if (first) { x = (i - 1) % 4; first = false; } if (temp / (int) Math.pow(10, x) % 10 == 0) { zero = true; } else { if (zero) { chineseAmt += num[0]; zero = false; } chineseAmt += num[temp / (int) Math.pow(10, x) % 10]; if (x > 0) { chineseAmt += xx[x - 1]; } } } if (k > 0) { chineseAmt = chineseAmt + yy[k - 1]; } } return chineseAmt; }

Test
We inputted three amount into this method to do conversion

1 2 3 4 5

public static void main(String args[]) { System.out.println(ReportUtils.convertToChineseAmt(2500L)); System.out.println(ReportUtils.convertToChineseAmt(50100L)); System.out.println(ReportUtils.convertToChineseAmt(325250L)); }

The result is as bellows:

1 2 3

貳仟伍佰 伍萬零壹佰 參拾貳萬伍仟貳佰伍拾

How to clear an array in AngularJS?

Question
If we have an array in AngularJS, how do I clear its content?

Answer
If we have an array, ex.

 $scope.itemarray = ['A', 'B', 'C'];  

If we would like to clear its content in specific situation, what we need to do is as bellowing:

 $scope.itemarray.length = 0;  

How to do collection filter in Java

Requirement
Assume I have a collection of Cta612pDto, and this collection contains:

1:  [Cta612pDto [acc=0100, amt=13033356, seqnm=(*)年度預算支出, ypay=null, formattedAmt=null],   
2:  Cta612pDto [acc=0101, amt=3809733, seqnm=  一般政務支出                                , ypay=null, formattedAmt=null],   
3:  Cta612pDto [acc=0102, amt=3894280, seqnm=  國防支出                                  , ypay=null, formattedAmt=null],   
4:  Cta612pDto [acc=0103, amt=2532563, seqnm=  教育科學文化支出                              , ypay=null, formattedAmt=null],   
5:  Cta612pDto [acc=0104, amt=1655232, seqnm=  經濟發展支出                                , ypay=null, formattedAmt=null],   
6:  Cta612pDto [acc=0105, amt=460708, seqnm=  社會福利支出                                , ypay=null, formattedAmt=null],   
7:  Cta612pDto [acc=0106, amt=59111, seqnm=  社區發展及環境保護支出                           , ypay=null, formattedAmt=null],   
8:  Cta612pDto [acc=0107, amt=366285, seqnm=  退休撫卹支出                                , ypay=null, formattedAmt=null],   
9:  Cta612pDto [acc=0109, amt=255444, seqnm=  一般補助及其他支出                             , ypay=null, formattedAmt=null],   
10:  Cta612pDto [acc=0200, amt=130015, seqnm=(*)以前年度支出                                 , ypay=null, formattedAmt=null],   
11:  Cta612pDto [acc=0400, amt=14271298, seqnm=(*)特種基金及保管款支出                             , ypay=null, formattedAmt=null],   
12:  Cta612pDto [acc=0500, amt=0, seqnm=(*)國庫券及短期借款還本支出, ypay=null, formattedAmt=null],   
13:  Cta612pDto [acc=8888, amt=1539861, seqnm=null, ypay=null, formattedAmt=null],   
14:  Cta612pDto [acc=9800, amt=757028109, seqnm=合計, ypay=null, formattedAmt=null],   
15:  Cta612pDto [acc=9900, amt=849981138506, seqnm=累計, ypay=null, formattedAmt=null],   
16:  Cta612pDto [acc=9991, amt=1539861, seqnm=  支付註銷, ypay=null, formattedAmt=null],   
17:  Cta612pDto [acc=9992, amt=728053579, seqnm=  支出收回, ypay=null, formattedAmt=null],   
18:  Cta612pDto [acc=9999, amt=728053579, seqnm=null, ypay=null, formattedAmt=null]]  

We need to remove some java beans from this collection when acc is 8888 or 9999.

Solution
We can make good use of PredicateUtils.nonePredicate to define our conditions which provide by Apache commons Collection. It will create a new Predicate that returns true if none of the specified predicates are true. If the array of predicates is empty, then this predicate returns true. 
And also use CollectionUtils.filter to filter the collection by applying a Predicate to each element.

1:      BeanPropertyValueEqualsPredicate acc8888Predicate = new BeanPropertyValueEqualsPredicate(  
2:          "acc", "8888");  
3:      BeanPropertyValueEqualsPredicate acc9999Predicate = new BeanPropertyValueEqualsPredicate(  
4:          "acc", "9999");  
5:      Predicate predicate = PredicateUtils.nonePredicate(new Predicate[] { acc8888Predicate,  
6:          acc9999Predicate });  
7:      CollectionUtils.filter(dataList, predicate);  

After doing CollectionUtils.filter, you can find out two java beans had been removed from data list collection.

1:  [Cta612pDto [acc=0100, amt=13033356, seqnm=(*)年度預算支出, ypay=null, formattedAmt=13,033,356.00],   
2:  Cta612pDto [acc=0101, amt=3809733, seqnm=  一般政務支出                                , ypay=null, formattedAmt=3,809,733.00　　　],   
3:  Cta612pDto [acc=0102, amt=3894280, seqnm=  國防支出                                  , ypay=null, formattedAmt=3,894,280.00　　　],   
4:  Cta612pDto [acc=0103, amt=2532563, seqnm=  教育科學文化支出                              , ypay=null, formattedAmt=2,532,563.00　　　],   
5:  Cta612pDto [acc=0104, amt=1655232, seqnm=  經濟發展支出                                , ypay=null, formattedAmt=1,655,232.00　　　],   
6:  Cta612pDto [acc=0105, amt=460708, seqnm=  社會福利支出                                , ypay=null, formattedAmt=460,708.00　　　],   
7:  Cta612pDto [acc=0106, amt=59111, seqnm=  社區發展及環境保護支出                           , ypay=null, formattedAmt=59,111.00　　　],   
8:  Cta612pDto [acc=0107, amt=366285, seqnm=  退休撫卹支出                                , ypay=null, formattedAmt=366,285.00　　　],   
9:  Cta612pDto [acc=0109, amt=255444, seqnm=  一般補助及其他支出                             , ypay=null, formattedAmt=255,444.00　　　],   
10:  Cta612pDto [acc=0200, amt=130015, seqnm=(*)以前年度支出                                 , ypay=null, formattedAmt=130,015.00],   
11:  Cta612pDto [acc=0400, amt=14271298, seqnm=(*)特種基金及保管款支出                             , ypay=null, formattedAmt=14,271,298.00],   
12:  Cta612pDto [acc=0500, amt=0, seqnm=(*)國庫券及短期借款還本支出, ypay=null, formattedAmt=0.00],   
13:  Cta612pDto [acc=9800, amt=757028109, seqnm=合計, ypay=null, formattedAmt=757,028,109.00],   
14:  Cta612pDto [acc=9900, amt=849981138506, seqnm=累計, ypay=null, formattedAmt=849,981,138,506.00],   
15:  Cta612pDto [acc=9991, amt=1539861, seqnm=  支付註銷, ypay=null, formattedAmt=1,539,861.00　　　],   
16:  Cta612pDto [acc=9992, amt=728053579, seqnm=  支出收回, ypay=null, formattedAmt=728,053,579.00　　　]]  

Why iReport eat my spaces

Requirement

We had a report requirement as bellows:

You can see some items' amount need to do indent. Others don't.

Problem

Here we add 7 single-byte spaces for some items' amount to do indent based on specific conditions.

1:   DecimalFormat df = new DecimalFormat();  
2:      df.setMaximumFractionDigits(2);  
3:      df.setMinimumFractionDigits(2);  
4:      for (Cta612pDto vo : dataList) {  
5:        if (StringUtils.startsWith(vo.getSeqnm(), "(*)") || "9800".equals(vo.getAcc())  
6:            || "9900".equals(vo.getAcc())) {  
7:          vo.setFormattedAmt(df.format(vo.getAmt()));  
8:        } else {  
9:          vo.setFormattedAmt(df.format(vo.getAmt()) + "       ");  
10:        }  
11:        formattedList.add(vo);  
12:      }  

But it does not work:

Root cause

 The iReport seem trim your spaces automatically. Therefore, it does not work for this circumstance.

Solution
We need to use double-byte spaces(全形空白) instead of single-byte spaces(半形空白).

1:   DecimalFormat df = new DecimalFormat();  
2:      df.setMaximumFractionDigits(2);  
3:      df.setMinimumFractionDigits(2);  
4:      for (Cta612pDto vo : dataList) {  
5:        if (StringUtils.startsWith(vo.getSeqnm(), "(*)") || "9800".equals(vo.getAcc())  
6:            || "9900".equals(vo.getAcc())) {  
7:          vo.setFormattedAmt(df.format(vo.getAmt()));  
8:        } else {  
9:          vo.setFormattedAmt(df.format(vo.getAmt()) + "　　　");  
10:        }  
11:        formattedList.add(vo);  
12:      }  

AngularJS - How to remove unnecessary blank option in dynamic drop down list

Based on AngularJS - How to create dynamic drop down list this post, you had learned how to create a dynamic drop down list via AnguarJS.

Problem
But we found out a problem, AngularJS will create an empty option in the dynamic drop down list and will place at first location. It's not my expected result.

Solution
You can set a default value to your dynamic drop down list, then you can fix your problem. Here is code snippet:

1:      //query  
2:      $scope.query = function(){  
3:        var result = nss702rService.query('rest/', $scope.model);  
4:        result.then(function(response){  
5:         $scope.dpNos = response;  
6:         //if have more than one record in dpNos,  
7:         //then set the first option as its default value  
8:         if($scope.dpNos.length > 0){  
9:           $scope.model.dpNo = $scope.dpNos[0].uid;  
10:         }  
11:       });  
12:      };  

Check the result. You won't find the empty option in the dynamic drop down list

AngularJS - How to create dynamic drop down list

Requirement
The "區局代號" drop down list in this page should generate dynamically from database

The sql statement is as bellows:

1:  select UID, NAME   
2:  from UAA001V1   
3:  where ORGCD = 'cht12345' and UID <> '957500';  

And expected to retrieve two records

How to do it
[Step1] Create an value object class to store the result.

1:  /**  
2:   *   
3:   */  
4:  package gov.nta.nss.dto;  
5:  import java.io.Serializable;  
6:  // TODO: Auto-generated Javadoc  
7:  /**  
8:   * The Class UAA001V1Bean.  
9:   */  
10:  public class UAA001V1Bean implements Serializable {  
11:    private static final long serialVersionUID = -7541446851729769394L;  
12:    // 機關代號  
13:    private String uid;  
14:    // 機關名稱  
15:    private String name;  
16:    /**  
17:     * Gets the uid.  
18:     *   
19:     * @return the uid  
20:     */  
21:    public String getUid() {  
22:      return uid;  
23:    }  
24:    /**  
25:     * Sets the uid.  
26:     *   
27:     * @param uid  
28:     *      the uid to set  
29:     */  
30:    public void setUid(String uid) {  
31:      this.uid = uid;  
32:    }  
33:    /**  
34:     * Gets the name.  
35:     *   
36:     * @return the name  
37:     */  
38:    public String getName() {  
39:      return name;  
40:    }  
41:    /**  
42:     * Sets the name.  
43:     *   
44:     * @param name  
45:     *      the name to set  
46:     */  
47:    public void setName(String name) {  
48:      this.name = name;  
49:    }  
50:    /**  
51:     * {@inheritDoc}  
52:     */  
53:    @Override  
54:    public String toString() {  
55:      return "UAA001V1Bean [uid=" + uid + ", name=" + name + "]";  
56:    }  
57:  }  

[Step2] Create a controller class, and do query to return a List of UAA001V1Bean

1:  /**  
2:   *   
3:   */  
4:  package gov.nta.nss.web.rest;  
5:  import gov.nta.nss.Messages;  
6:  import gov.nta.nss.dto.UAA001V1Bean;  
7:  import gov.nta.nss.service.Nss702rService;  
8:  import gov.nta.nss.web.dto.Nss702r;  
9:  import java.util.List;  
10:  import org.apache.commons.collections.CollectionUtils;  
11:  import org.slf4j.Logger;  
12:  import org.slf4j.LoggerFactory;  
13:  import org.springframework.beans.factory.annotation.Autowired;  
14:  import org.springframework.http.MediaType;  
15:  import org.springframework.stereotype.Controller;  
16:  import org.springframework.web.bind.annotation.RequestBody;  
17:  import org.springframework.web.bind.annotation.RequestMapping;  
18:  import org.springframework.web.bind.annotation.RequestMethod;  
19:  import org.springframework.web.bind.annotation.ResponseBody;  
20:  import com.cht.commons.web.Alerter;  
21:  /**  
22:   *   
23:   */  
24:  @Controller  
25:  @RequestMapping("NSS702R/rest/")  
26:  public class Nss702rResouce {  
27:    private final static Logger LOG = LoggerFactory.getLogger(Nss702rResouce.class);  
28:    @Autowired  
29:    private Nss702rService nss702rService;  
30:    /**  
31:     * Gets the uaa001v1 beans.  
32:     *   
33:     * @return the uaa001v1 beans  
34:     */  
35:    @RequestMapping(method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)  
36:    public @ResponseBody  
37:    List<UAA001V1Bean> getUaa001v1Beans(@RequestBody Nss702r nss702r, Alerter alerter) {  
38:      // find all 區局代號 list  
39:      List<UAA001V1Bean> uaa001v1Beans = nss702rService.getUaa001v1Beans();  
40:      LOG.info("uaa001v1Beans=" + uaa001v1Beans.toString());  
41:      // if List of UAA001V1Bean is empty, return "找不到區局代號"  
42:      if (CollectionUtils.isEmpty(uaa001v1Beans)) {  
43:        alerter.info(Messages.nss702r_dpno_not_exist());  
44:      }  
45:      return uaa001v1Beans;  
46:    }  
47:  }  

[Step3] js file (only includes code snippet)

1:       //......................  
2:      //query  
3:      $scope.query = function(){  
4:        var result = nss702rService.query('rest/', $scope.model);  
5:        result.then(function(response){  
6:         $scope.dpNos = response;   
7:       });  
8:      };  
9:      $scope.refresh = function(){  
10:        $scope.query();  
11:      };  
12:      $scope.refresh();  
13:            //......................  

[Step4] html file  (only includes code snippet)

1:           <div class="form-group col-sm-5">  
2:            <label class="control-label">區局代號 :</label>  
3:            <select class="form-control" style="width: 80%;"  
4:                id="dpNo" name="dpNo" data-ng-model="model.dpNo"  
5:                data-ng-options="dpNo.uid as dpNo.name for dpNo in dpNos">  
6:            </select>  
7:           </div>  

Check the result

How to adjust column width to fit the contents in Apache POI

Problem
I utilized Apache POI to write data into excel file. But I found out each cell width has the same default width, it does not adjust it's width based on its contents.

Solution

You can call autoSizeColumn method in HSSFSheet to fix this problem.
Here is the JavaDoc: http://poi.apache.org/apidocs/org/apache/poi/hssf/usermodel/HSSFSheet.html#autoSizeColumn(int, boolean)
If you have 10 columns, you need to call autoSizeColumn 10 times in for-loop.
For example.

1:          for (int resizeCnt = 0; resizeCnt < pdateSet.size() + 3; resizeCnt++) {  
2:            sheet.autoSizeColumn(resizeCnt);  
3:          }  

Check the result after we call autoSizeColumn. 
You can see some columns' width may not really fit the contents, but it's much better than the original one.