Databases
StackOverflow2013
Postsdbo
PONull Pointer Exception with Jsoup Parse
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PONull Pointer Exception with Jsoup Parse
    primarykey
    data
    text
    <p>So I have sifted thought some code and cannot trouble shoot this null pointer exception error. </p> <p>I'm trying to parse a tables from source code lines 2290 to 3153 <a href="http://pastebin.com/DjGHED5t" rel="nofollow">http://pastebin.com/DjGHED5t</a></p> <p>However, in one of my CSS queries the code fails and makes no sense to me why. </p> <pre><code>public void updateCompanyIs()throws IOException{ investoolsLogin(); Document doc = Jsoup.connect("http://toolbox.investools.com/graphs/fundamentalAnalysis.iedu?report=BS&amp;symbol="+(Ticker)).get(); // Elements table = doc.select("table"); /**LINE 72**/ Elements columns = doc.getElementById("fundamentalsForm").children().select("table").get(0).select("tr").get(0).select("td"); Iterator&lt;Element&gt; columnIterator = columns.iterator(); int col = 0; int row = 0; while (columnIterator.hasNext()) { Element column = columnIterator.next(); Elements rows = column.select("table").get(0).select("tr"); Iterator&lt;Element&gt; rowsIterator = rows.iterator(); col = col + 1; while (rowsIterator.hasNext()){ row = row + 1; //Element rowIterator.next = ; incomeStatementInfo[col][row] = rowsIterator.next(); } } } public void updateCompanyBs()throws IOException{ investoolsLogin(); Document doc = Jsoup.connect("http://toolbox.investools.com/graphs/fundamentalAnalysis.iedu?report=BS&amp;symbol="+(Ticker)).get(); // Elements table = doc.select("table"); Elements columns = doc.getElementById("fundamentalsForm").children().select("table").get(0).select("tr").get(0).select("td"); Iterator&lt;Element&gt; columnIterator = columns.iterator(); int col = 0; int row = 0; while (columnIterator.hasNext()) { Element column = columnIterator.next(); Elements rows = column.select("table").get(0).select("tr"); Iterator&lt;Element&gt; rowsIterator = rows.iterator(); col = col + 1; while (rowsIterator.hasNext()){ row = row + 1; //Element rowIterator.next = ; balanceSheetInfo[col][row] = rowsIterator.next(); } } } public void updateCompanyCf()throws IOException{ investoolsLogin(); Document doc = Jsoup.connect("http://toolbox.investools.com/graphs/fundamentalAnalysis.iedu?report=BS&amp;symbol="+(Ticker)).get(); // Elements table = doc.select("table"); Elements columns = doc.getElementById("fundamentalsForm").children().select("table").get(0).select("tr").get(0).select("td"); Iterator&lt;Element&gt; columnIterator = columns.iterator(); int col = 0; int row = 0; while (columnIterator.hasNext()) { Element column = columnIterator.next(); Elements rows = column.select("table").get(0).select("tr"); Iterator&lt;Element&gt; rowsIterator = rows.iterator(); col = col + 1; while (rowsIterator.hasNext()){ row = row + 1; //Element rowIterator.next = ; cashFlowsInfo[col][row] = rowsIterator.next(); } } } public void updateCompanyInfo(String Ticker) throws IOException { /** LINE 134**/ updateCompanyIs(); updateCompanyBs(); updateCompanyCf(); } } </code></pre> <p>This is the error: </p> <pre><code>Exception in thread "main" java.lang.NullPointerException at Company.updateCompanyIs(Company.java:72) at Company.updateCompanyInfo(Company.java:134) at Company.&lt;init&gt;(Company.java:41) at AppGUI.main(AppGUI.java:124) </code></pre> <p>And this is my AppGUI:</p> <pre><code>public static void main(String[] args) throws Exception{ Company company = new Company("KO"); // Creates new Company. Updating methods are called from constructor automatically. AppGUI frame = new AppGUI(company); // Creates new App GUI. Various panes are initialized from constructor. frame.retrieveGUI(company); frame.setTitle("Financial Calculator | Ratios"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setMinimumSize(new Dimension(1000, 500)); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } </code></pre> <p>I think my JSOUP code is correct, but I could have gotten confused with the select and node elements, as well as the query. If anyone can help it would be greatly appreciated.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USuser1093111
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. CORegarding line 72, if this were my code, I'd break the long chained method line up and put each method call on its own line, the better to see which method call is causing the NPE. Also consider using debug statements as well.
      singulars
      1. PONull Pointer Exception with Jsoup Parse
      1. USHovercraft Full Of Eels
    2. COI broke it up and it still said line 72. I have tried using a toString print out to at each intervals and they all failed.
      singulars
      1. PONull Pointer Exception with Jsoup Parse
      1. USuser1093111
    3. COthis would lead me to believe it has to do with getElementById, but it doesn't make sense
      singulars
      1. PONull Pointer Exception with Jsoup Parse
      1. USuser1093111
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload