<FileDownloadActionListener> <processAction> javax.el.ELException: java.lang.OutOfMemoryError: Java heap space at com.sun.el.parser.AstValue.invoke(Unknown Source) at com.sun.el.MethodExpressionImpl.invoke(Unknown Source)
I have a requirement to download the data from DB to CSV/Excel. What I did is retrieving all the records from DB and store in the List and pass that list to the jsp page. In JSP page, I am using the below setting to download it to CSV/EXCEL.
It was working fine. But I have an issues in it. Excel is capable of storing it only 65,536 rows. Even all the data getting downloaded to CSV/excel (> 65,536), while saving I am getting error from excel saying that it can't save more than 65,536 rows and the below data won't be saved.
This workbook contains data in cells outside of the row and column limit of the selected file format.
Data beyond 256 (IV) columns by 65,536 rows will not be saved. Formula references to data in this region will return a #REF! error.
I am not opt for POI apache third party at this point of time. Is it possible to download it in other sheets if it exceeds the max limit.
Example: Having data of around 100,000.
Download 65,536 - Sheet 1 Remaining in Sheet 2,3.. of the same excel.
I am trying to get the excel spreadsheet data and converting it in someway to java. I'm looking for something that will print out the java code itself that way I can embed it into future projects.
I'm trying to insert data into an excel sheet with the below Servlet.
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */
But it is giving me the below Exception and stacktrace
java.text.ParseException: Unparseable date: "2-Apr" at java.text.DateFormat.parse(DateFormat.java:357) at Serv1.doPost(Serv1.java:53) at javax.servlet.http.HttpServlet.service(HttpServlet.java:644) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
[Code] ....
i found that the problem is within the date field(, if the problem is with the date, how i can fix it and where am i going wrong.
I am reading Excel data using java apache. I got format issue while reading double value such as 869.87929 (in excel) into 869.8792899999999 (in java).
if(type.equals("Double")){ String str = content[i-1]; //System.out.println(str); BigDecimal d = new BigDecimal(str); listObjects.add(d); }
Note: type from schema.csv & content [] value from file.xls If I print **str**, it shows value as 869.8792899999999. But i need to get **str** value as 869.87929. How can I get it?
i have to write more than 100000 rows in a excel sheet (file size more than 20 MB) via java.
when i use XSSF, i am getting below Error.
java.lang.OutOfMemoryError: Java heap space at org.apache.xmlbeans.impl.store.Saver$TextSaver.resize(Saver.java:1592) at org.apache.xmlbeans.impl.store.Saver$TextSaver.preEmit(Saver.java:1223) at org.apache.xmlbeans.impl.store.Saver$TextSaver.emit(Saver.java:1144)
[Code]....
when i use HSSF , i am getting the below Error. java.lang.OutOfMemoryError: Java heap space
I have tried increasing the java heap size , by giving upto -Xms1500m -Xmx2048m
I've got a Java application made in eclipse using lwjgl. I'm trying to make a working exe-file by the following steps:
- Export project as executable jar (copy libs into subfolders) - Making a fat jar using jarsplice (adding lwjgl-jars and natives) - Wrap the fat jar in an exe-file using launch4j
Result: Error: invalid or corrupt jarfile.
The fat jar is working fine. If I make an exe-file directly in jarsplice it also works fine but then I'm missing the possibilities of setting the icon etc.
This is what I do in launch4j:
- Choose an outputfile (ending with name.exe) - Choosing the fat jar - Specifying min JRE version to 1.7.0 (says JavaSE-1.7 in eclipse) - Build wrapper - Run -> Error (see above)
i have programmed a game using JPanel and JFrame. My App is of this type (if this is relevant to the problem):
public class Main extends JPanel { private JFrame frame; public static void main(String[] args) { new Main(); } public Main() { frame.setSize(WIDTH, HEIGHT);
[Code] ....
The problem is, When i export the file in eclipse as Runnable jar file,and run the exported file, it gives me a blank screen (white default) and nothing is running. Whereas, normal debugging of the game is working quite well.
I'm new to java programming and I've been trying to make my first program in eclipse for a while, and I finally managed to do that. Well my problem is that I want to be able to use my program without having to open eclipse and opening my program from there, is there any way to do that ?
I have recently revisited a program I wrote a few years ago, that runs absolutely fine in the console in Eclipse. However, when I export it as a Runnable Jar File, then open the file on my Desktop, nothing happens.How do I get the program to export so that when I open the file, a window opens that acts as the console (so the program can run in it)?
I'm very new to Java and looking to expand knowledge base from Excel VBA..I'm looking to add or analyse data from a csv file in a time order fashion. i.e i want to keep/ add a cumulative total. (once i've achieved that i then want to look at a java equivalent of sumif...
I wrote a program that asks the user to enter some information, does some calculations and tells them what they need to order. I know there is a way I just do not know how to do it. I would like the output from the program which is presented in text fields to be printed onto a form I made in excel when a button is pressed.
I am trying to export a DB record to an excel sheet. Below is the code which I tried. I am not getting any error but still only the first record of the table is getting inserted into the excel sheet. But when I try printing, I prints all the records. Below is the code I did to insert records.
Java Code: import jxl.read.biff.BiffException; import java.io.*; import java.util.*; import jxl.*; import jxl.write.*; public class MainProgram{ public static void main(String[]args){ try{ Workbook workbook = Workbook.getWorkbook(new File("myfile.xls"));
[Code]...
Not sure why this code isnt working for me, it makes an empty excel file called output, but never copies the contents in "myfile" to that output file. I have Excel 2010 but I saved both of them as 97-2003 workbooks. Am I missing something? Do you have to go cell by cell to copy an excel file with JXL?
