I need help and wanted to ask if somebody knows where to get the JAR Files for my system library (eclipse helios), cause I need to use those classes PPM and PPMImage but the import declarations seem not to work
package com.sun.media.imageio.plugins.pnm;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.*;
import java.lang.*;
import com.apple.*;
import de.medieninf.ads.*;
this is what I have implemented so far
I googled this hard but couldnt find anything.
You need to install Java Advanced Image and its plugin Java Advanced Image I/O Tools: JAI 1.1.3 and JAI I/O Tools 1.1
These provide you the PNM plugins are trying to use.
Related
Im using eclipse Photon. The code worcked fine on old computer. When I got a new computer and tried to run the program The following imports are give me a import cannot be resolved error
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClients;
I'm assuming im missing some jar files. Could some one tell me what jar files I need and whare i can find them? Also why does it work find on ole computer with same jars being added?
Those two classes are part of Apache HTTP Components which you can access from https://hc.apache.org/index.html.
i need to import java.nio.file.* but cannot find the jar containing this package
I installed new version of jdk 1.8 but still i cannot import this package .Can anybody tell me the jar file containing this package.
Thanks
I think the package want you to import is java input output.
Used this
import java.io.file.*;
Instead of
import java.nio.file.*;
So i made it finally to the final stage of my simple java app that runs under windows and is used to get the user name and log it in an remote excel file. up until now everything is ok.
When i Externelize (does that word exist?) the app to make it a runnable jar the size of the app was 22Mo! wich is huge since i want to use it in an email (outlook).
Here come the question (finally). Can i delete any of the default java jars in the classpath and the app will still run ?? if yes, which ones??
NB: i tried including the imports in the SS if it does help
NB2: the Jar of the app it self is just 20Ko , the ressources are around 22Mo .
By the way thank you all for helping me make this app it was thanks to this website eventhought i didn't ask any question up until now you'll still answered them all..You rock !
Those are my imports:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.wb.swt.SWTResourceManager;
EDIT: So after the discussions i managed to reduce the size of the app to 8Mo by deleting some of the jar in the referenced library (org.ibm.icu.jar). The app still runs perfectly without it
A jar file is just a zip file, so what I would do is simply unzip the file and see what comes with it and what is large. The standard java libraries, should not even be part of your JAR as they are part of the JRE.
However, my suspicion is that you use Apache POI and that is huge. So if you are writing to an Excel file you might have to stick with that size or find another library.
You could for example write the output as CSV which is very lightweight.
is it possible for me to use java library such as
import java.io.File;
import java.io.FileInputStream;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.HashMap;
in my j2me project?
Short answer: No.
Long answer: You can try to add the jars as third party libraries, but you may find conflicts. More important, when you finally deploy in the target system, you may find that these libraries do not work with that JVM.
I'm using Eclipse on Mac OS X 10.6.6.
For some reason when I'm trying to import the following libraries I get this error:-
java.apt (only java.apt.font is available)
javax.swing
The system is fully updated with the recent updates
Thanks in advance
Are you doing
import javax.swing;
or are you doing
import javax.swing.*;
The difference is very important.
As a general rule, I try to import only the exact classes I need.