title: Null pointer exception while using getRow() in jxl
body: <p>I have written a java code using JXL api to read data from excel &amp; return the table in form of 2D array. I'm getting a null pointer exception while using getRow()
  My Code is as follows,</p>
  
  <pre><code>public String[][] getExcelData(String xlPath, String shtName)throws Exception 
  {
      int ci,cj;
  
      Workbook workbk = Workbook.getWorkbook(new File(xlPath));
      Sheet sht = workbk.getSheet(0);
  
  
      Cell Start = sht.findCell("Start");
      System.out.println("Start cell found");
      Cell End = sht.findCell("End");
  
      int startRow = Start.getRow();
      System.out.println("start row number"+startRow);
      int endRow = End.getRow();
  
      int startColumn = Start.getColumn();
      int endColumn = End.getColumn();
  
      /*rowCount = sht.getRows();
      colCount = sht.getColumns();*/
      int tableStartRow = startRow+1;
      int tableStartColumn = startColumn+1;
  
      int tableEndRow = endRow-1;
      int tableEndColumn = endColumn-1;
  
      //tabArray = new String[rowCount-1][colCount];
      tabArray = new String[tableEndRow-1][tableEndColumn-1];
      System.out.println("#row: " + rowCount);
      System.out.println("#col: " + colCount);
  
      ci=0;
  
      for (int i=1;i&lt;=tableEndRow-1;i++, ci++)
      {             
  
          cj=0;
  
          for (int j=1;j&lt;=tableEndColumn-1;j++, cj++)
          {
              System.out.println("Ci -&gt;"+ci+" &amp; Cj -&gt;"+cj);
              System.out.println("i -&gt;"+i+" &amp; j -&gt;"+j);
              System.out.println("contents"+sht.getCell(j, i).getContents());
              tabArray[ci][cj]= sht.getCell(j, i).getContents();
  
              System.out.println("Value at"+ci+""+cj+"is -&gt;"+tabArray[ci][cj]+"\n");
  
          }
     }
     return (tabArray);
  }
  
  
  
  Start cell found
  SKIPPED: Test
  java.lang.RuntimeException: java.lang.NullPointerException
  at org.testng.internal.MethodInvocationHelper.invokeDataProvider        MethodInvocationHelper.java:161)
  at org.testng.internal.Parameters.handleParameters(Parameters.java:429)
  at org.testng.internal.Invoker.handleParameters(Invoker.java:1383)
  at org.testng.internal.Invoker.createParameters(Invoker.java:1075)
  at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1180)
  at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
  at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
  at org.testng.TestRunner.privateRun(TestRunner.java:767)
  at org.testng.TestRunner.run(TestRunner.java:617)
  at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
  at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
  at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
  at org.testng.SuiteRunner.run(SuiteRunner.java:240)
  at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
  at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
  at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
  at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
  at org.testng.TestNG.run(TestNG.java:1057)
  at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
  at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
  at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)
  Caused by: java.lang.NullPointerException
  at DataProvider.DataSource.getExcelData(DataSource.java:39)
  at DataProvider.DataSource.getLoginData(DataSource.java:84)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.lang.reflect.Method.invoke(Unknown Source)
  at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
  at org.testng.internal.MethodInvocationHelper.invokeDataProvider    (MethodInvocationHelper.java:135)
  ... 20 more
  </code></pre>
  
  <p>The excel to be read is -
  <img src="https://i.stack.imgur.com/UA3oa.png" alt="enter image description here"></p>
  
  <p>Any help will be appreciated !!</p>