How To Install Apache POI
Jan 19, 2015
I'm trying to learn how to read from, and write to, Excel files. I'm looking at this link : [URL] ....
It seems like there are some Apache dependencies. So, I go here : [URL] .....
I downloaded the zipped file from the first link. Now what? I don't see any .exe file, or any way of installing it. How do I install it, or run it, or whatever? What is the next step here?
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Sep 2, 2014
I'm trying to read a .xlsx file using Apache Poi on Eclipse and store the data into an ArrayList.
My code :
import org.apache.poi.ss.usermodel.*;
import java.io.*;
import java.util.*;
public class parseReadFiles
{
public static void main(String[] args) {
[Code] ....
I keep getting a FileNotFoundException: Users/Divjot/Desktop/first.xlsx (No such file or directory). I've tried different combinations of file names and paths but can't get the program to find it. Should the file be stored in a special place or should the class path be different?
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Feb 18, 2014
I've got this annoying error message when trying to import:
import org.apache.commons.codec.binary.Hex.encodeHex;
"Import org.apache.commons.codec cannot be resolved", which after searching seems to be a somewhat common problem. The solution being to go to: FileUpload - Home and download some jar file and add it to the /web-inf/lib folder. yet the error persists even after adding the jar file in "add external jar files" and restarting eclipse.
The jar file I added is called "commons-fileupload-1.3.1.jar" which is the only one I could find in the zip file. I've searched around looking at numerous threads about the issue, several of them sadly several years old, with no success.Surely installing a library to eclipse shouldn't be this complicated?
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May 20, 2014
I'm using apache POI to input data from a excel database. I have a method that is supposed to count the number of rows containing data so I can use that number to initialize an object array. It's returning one more than the actual number of rows and I can't figure out why.
public int getDataRange() throws IOException{
int rowCount = 0;
Iterator<Row> rows = sheet.rowIterator();
while(rows.hasNext()){
HSSFRow row = (HSSFRow) rows.next();
rowCount++;
[Code] .....
I get an array index out of bounds exception at the highlighted line.
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Feb 19, 2014
I am developing an dashboard application in Java, JSTL, MySql, Apache Tomcat 6.I have the below files
1. Dashboard.java (model)
2. DashboardDAO.java (dao)
3. DashboardController.java (Controller)
//Source
protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
String forward = "";
forward = LIST_DASHBOARD;
HttpSession session = req.getSession(true);
session.setAttribute("dboard", dao.getAlldashboard(req));
setMasterInfo(req);
RequestDispatcher view = req.getRequestDispatcher(forward);
view.forward(req, res);
[code]....
It works in the first time. But, after sometime the data is not retrieved and display empty screen. Once, i stop and start the server again, the data is getting retrieved again. But, later when we refresh the empty page is getting displayed again.
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Dec 10, 2014
I'm currently using TextPad or command prompt to compile and run my programs, and as usual I am not having any luck importing external libraries, in particular apache commons.
I couldn't see any particularly obvious settings in TextPad to set a library or class path (which is annoying as I really like the program), so I jumped back to cmd prompt to run it from there. Aaaaaand i don't understand .
This is my file structure at present:
/mainProject //includes .java and .class files, and where I've successfully placed .jar files before.
The apache commons zip file was extracted here, making:
/mainProject/commons-lang3/apidocs/orgs/apache/commons/<folders> //the commons-lang3 folder contains the jars I'm navigating to the /mainProject folder in cmd prompt and typing (amongst many other things) javac -cp /mainProject/commons-lang3 MonsterGame.java //with the -cp being pointed at the folder the .jar is in i've tried pointing it at the root folder where the import statement begins in the code (ie mainProject/commons-lang3/apidocs), tried moving the .jar files to the mainProject folder (pointing -cp at it) and more. No luck.
it seems everytime i try to import a new library something goes wrong..... its become a bit of a stumbling block to be honest. I seem to spend most of my time dealing with the 'administrative' side of coding (that was the politest way i could put it ), am I not doing it right?
I've read I'm supposed to include the .jar in the classpath, not just the directory. is this correct? (it still doesn't work...!)
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Mar 17, 2012
i am getting the following errors.
Exception in thread "main" java.lang.NullPointerException
at java.io.Reader.<init>(Unknown Source)
at java.io.InputStreamReader.<init>(Unknown Source)
at ToHtml.printStyles(ToHtml.java:215)
at ToHtml.printInlineStyle(ToHtml.java:199)
[code]...
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May 13, 2015
I am having some serious difficulty getting my project off the ground. I have the following code:
FileInputStream file = new FileInputStream(new File("src/retestchecker/test_sheet.xlsx"));
//Get the workbook instance for XLS file
XSSFWorkbook workbook = new XSSFWorkbook(file);
//Get first sheet from the workbook
XSSFSheet sheet = workbook.getSheetAt(0);
Row row = sheet.getRow(0);
Cell x = row.getCell(3);
System.out.println(x);
Everything is properly imported, etc etc.. But I am getting this error and I am not sure what it means:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlException
at retestchecker.RetestChecker.main(RetestChecker.java:23)
Caused by: java.lang.ClassNotFoundException: org.apache.xmlbeans.XmlException
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
[Code] .....
Java Result: 1
I am using Netbeans and the latest version of Apache POI that was released May 11, 2015.
The line 23 that the error refers to is this line:
XSSFWorkbook workbook = new XSSFWorkbook(file);
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Sep 17, 2014
I'm using Apache Poi to create an Excel file from a JTable.
I want to open the file directly in Excel, rather than first write it to disk and then open it from the disk.
FileOutputStream output = new FileOutputStream( StolleExcel.xls" );
workBook.write( output );
Desktop dt = Desktop.getDesktop();
dt.open( new File( "StolleExcel.xls" ) );
output.close();
Is there a temporary way of saving the Excel object then just opening it with Excel, so the user can save or edit whatever they want?
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Apr 16, 2013
I keep getting an error in my browser:
java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
[Code] .....
I see the file "myApache.log" got created but there's no info in it when i re-test the error, I have other existing appenders and categories in this same file which do give output so I know it has nothing to do with the file or the path itself.
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Apr 5, 2014
I am trying to install Java on my Debain based Linux OS and can`t seen to figure it out. I first typed "chmod +x jdk-8-nb-8-linux-i586.sh", than typed "./ jdk-8-nb-8-linux-i586.sh" to install it. It started to install, but than it gave my this message: (computer name has been changed)
bobsmith@bobsmiht-OptiPlex-GX620:~/Downloads$ ./jdk-8-nb-8-linux-i586.sh
Configuring the installer...
Searching for JVM on the system...
Preparing bundled JVM ...
./jdk-8-nb-8-linux-i586.sh: 1: eval: /tmp/.nbi-5045119.tmp/jre-7u4-linux-i586.bin: not found
Cannot prepare bundled JVM to run the installer.
Most probably the bundled JVM is not compatible with the current platform.
How do I fix this? My Linux computer is not connected to the internet, I don`t know if this is a problem or not.
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Apr 19, 2014
I used Ubuntu 13.10 on a Chromebook and Java7 and Java8 both worked nicely. Not on Ubuntu14.04, however.
I can try
sudo apt-get install openjdk-7-jdk
javac -version
java -version
… and it tells me 1.7.0_51 IcedTea etc. I haven't found an OpenJDK version of Java8, so I tried the usual technique of unzipping the Oracle download into /usr/java (which I have created and given “campbell” ownership of).
campbell@xxxxx:~$ /usr/java/jdk1.8.0_05/bin/java -version
bash: /usr/java/jdk1.8.0_05/bin/java: cannot execute binary file: Exec format error
campbell@xxxxx:~$ /usr/java/jdk1.7.0_55/bin/java -version
bash: /usr/java/jdk1.7.0_55/bin/java: No such file or directory
Same download in my home directory as I had last week. I repeated the download and got the same error. It is different from the error for Oracle Java7, which I haven't actually got installed at the moment.
I shall probably revert to Ubuntu13.10 for a bit.
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Feb 7, 2015
I'm trying to make my first servlet, however since I have only installed the Java SE, the javac compiler is complaining about missing packages (javax.servlet.http...)
I've realized now that I need javax.servlet jar or class files from Java EE, but after downloading java_ee_sdk-7u1.zip from Oracle here I'm not seeing any .sh or java_ee_sdk-7-jdk7-macosx-x64.sh installer (which I saw mentioned elsewhere). The oracle page only instructs to unzip the downloaded file, and searching for javax.servlet only reveals a few files which I'm not sure what to do with:
javax.servlet-api.jar,
javax.servlet.jsp.jar,
javax.servlet.jsp-api.jar,
javax.servlet.jsp.jstl.jar,
javax.servlet.jsp.jstl-api.jar,
javax.servlet.ServletContainerInitializer,
How do I go about installing the Java EE libraries I need? I am on a mac, and I'd like to do this without IDE, using the command prompt if necessary.
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Dec 2, 2014
I am attaching a document which shows the current state of my registry.What I want to know is if I can [safely] delete the JavaSoft folder with all lower subfolders, then re-install jdk1.6/0_31 which, I am told, is the current version being used here by developers.According to others on the development team (not my team), there COULD be something in the registry that is preventing both the installation of java jdk AND its uninstallation.Since I cannot seem to attach any kind of document.
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Sep 22, 2014
I have created a java file and coverted it into exe file.. that exe file can be run directly by clicking the icon.... i dont need this, i want to install this java exe file and then use it.. is there any possible way?
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Aug 22, 2014
In my web application there is a need to provide a custom plugin to client , so I need to inform the browser to show plugin install window so that client can install that particular plugin.
how to do it from my JSP page . ?
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Sep 1, 2014
I have uninstalled JAVA because I needed to download the 64-bit version but no matter WHAT I do I still get the same installation error message "keyset as registered in invalid" and I was downloading it from [URL] .... I will do whatever it takes to fix this!
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Jul 16, 2014
I want to make a touchable program to install on my costumer information server that my client can search and register via my local database, how can i do this????
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Jun 23, 2014
How the cacerts file if populated within the java install directory?
Are there standard certificates that come with the jre install? Are they pulled from the OS somehow?
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Dec 23, 2014
We are using Kronos and when our staff trys to run reports -- they get three java prompts.The first one is asking if they would like to update java.The second one is do you want to run this application.The third one is allow access to the following application from this website
We are in a non persistent VDI environment so these prompts come up over and over and over.how to edit the Windows 7 image to disable all three of these prompts.Is there a way to install java from the command prompt with the parameters to disable these prompts from ocurring? if so i will uninstall and re-install with those prompts.
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Aug 5, 2014
I'm trying to install java_ee_sdk-6u3-jdk7-windows-x64.exe on our new Windows Server 2012 machine but the installer starts and I then get a Setup box appear that says Error: The Java(TM) Virtual Machine has aborted. I've looked in the Event Viewer and there are no messages and I've tried to get the installer to create a log file (by passing the parameter -l <loglocation>) but it doesn't seem to get that far as no log is created.
The very first time I tried to run the JavaEE install on this machine, it installed everything ok but didn't create the windows service as .NET Framework 3.5 was missing. So I uninstalled JavaEE and added in the .NET Framework 3.5 and then my problems began. I have already installed these versions of Java and JavaEE successfully on a previous Windows Server 2012 machine which had the .NET Framework 3.5 on it.
The JRE installed already on the computer is jre-6u45-windows-x64.exe and I am logged in as an administrator. I've tried uninstalling the JRE and reinstalling and also doing a registry clean using CCleaner incase there are any old references to the JRE/JavaEE but it didn't work.
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