I tried to to include an exe-file into a jar-Application and to run it. The idea is to extract it temporary at first and then to run the temp-exe-file. How to do that? That is what I have tried. There is my code. It occurs the exception java.io.FileNotFoundException because of the source file "ffmpeg.exe". I verified, but the file is included and the directory is correct.
package extractffmpeg;
import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.stage.Stage;
import org.apache.commons.io.FileUtils;
public class ExtractFFmpeg extends Application {
public void start(Stage primaryStage) throws IOException, URISyntaxException {
extractExe();
System.out.println("extract successfull");
Platform.exit();
}
public static void main(String[] args) {
launch(args);
}
public void extractExe() throws URISyntaxException, IOException{
final String resourcesPath = "ffmpeg/ffmpeg.exe";
URL url = ExtractFFmpeg.class.getResource(resourcesPath);
File source = new File(url.toString());
System.out.println("shows url of ffmpeg: " + url.getPath());
System.out.println("shows file of ffmpeg: " + source);
File destination = new File("C:/Users/FNI2Abt/Desktop/ffmpeg.exe");
FileUtils.copyFile(source, destination);
}
}
The idea is to create a self-extracting archive. The archive shall contain both JAR and EXE. The JAR file shall contain a class which would call Process.exec(...) on the adjacent EXE. Starting there, you can follow this tutorial:
How do I make a self extract and running installer
Related
I am currently having trouble creating a folder and a file if not present. I keep getting and error about it not being specified and I don't really know how to fix it.
this is my main
import java.io.IOException;
public class main {
/**
* #param args the command line arguments
*/
public static void main(String[] args) throws IOException{
timeKeepHome ja = new timeKeepHome();
//ja.setVisible(true);
fileTimeLog log = new fileTimeLog();
log.checkFile();
}
}
and this is my class to create the file/ folder.
import java.io.IOException;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Formatter;
public class fileTimeLog
{
File log = new File("log/sixWeek.dat");
File folder = new File("log");
PrintWriter logW = new PrintWriter("log/sixWeek.dat");
public fileTimeLog() throws IOException
{
System.out.println("successful");
checkFile();
}
public void checkFile() throws IOException
{
if(!(log.exists()))
{
createFile();
}
}
public void saveTime() throws IOException
{
}
public void saveDate()
{
}
public void createFile() throws IOException
{
folder.mkdir();
logW = new PrintWriter(log);
logW.println("DONT MODIFY THIS FILE IF UNLESS YOU KNOW WHAT YOUR ARE DOING ");
logW.close();
}
}
and the error i'm getting
Exception in thread "main" java.io.FileNotFoundException: log\sixWeek.dat (The system cannot find the path specified)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
at java.io.FileOutputStream.<init>(FileOutputStream.java:101)
at java.io.PrintWriter.<init>(PrintWriter.java:184)
at fileTimeLog.<init>(fileTimeLog.java:17)
at main.main(main.java:18)
I would make everything look nicer and neater but I'm just really frustrated and I've done research but don't really understand.
The Printwriter will try and create a file, so when you do this
PrintWriter logW = new PrintWriter("log/sixWeek.dat");
in your class defintion, then it will try to create it, but the folder does not exist until you do createFile
As you re-initialize logW in createFile anyway, you do not need to initialize it in your class defintion
I want to create a RapidMiner classifier on Java that classifies a user based on his/her touch input. I have searched for days now, I have RapidMiner Studio and have downloaded the rapidMiner-studio from github - but I don't know which one should I include on my library/build path.
Do I just include all of them? Any help would be greatly appreciated.
I found the answer to my question, so far I found out that you can run a process ( a .rmp) file you created from RapidMiner in Eclipse, and the JAR files i added are located at C:\Program Files\RapidMiner\RapidMiner Studio\lib
Here's my code:
package rapid_process;
import com.rapidminer.Process;
import com.rapidminer.RapidMiner;
import com.rapidminer.operator.Operator;
import com.rapidminer.operator.OperatorException;
//import com.rapidminer.operator.io.ExcelExampleSource;
import com.rapidminer.tools.XMLException;
import java.io.File;
import java.io.IOException;
import java.lang.Object;
public class process {
public static void main(String[] args) throws IOException, XMLException, OperatorException {
/*// Path to process-definition
final String processPath = "C:/Users/Evie/.RapidMiner/repositories/Local Repository/processes/Compare ROCs.rmp";
// Init RapidMiner
RapidMiner.setExecutionMode(ExecutionMode.COMMAND_LINE);
RapidMiner.init();
// Load process
final com.rapidminer.Process process = new com.rapidminer.Process(new File(processPath));
process.run();*/
try {
RapidMiner.setExecutionMode(RapidMiner.ExecutionMode.COMMAND_LINE);
RapidMiner.init();
Process process = new Process(new File("C:/Users/YourUser/.RapidMiner/repositories/Local Repository/processes/Compare ROCs.rmp"));
process.run();
} catch (IOException | XMLException | OperatorException ex) {
ex.printStackTrace();
}
}
}
It is possible to update individual files in a JAR file using the jar command as follows:
jar uf TicTacToe.jar images/new.gif
Is there a way to do this programmatically?
I have to rewrite the entire jar file if I use JarOutputStream, so I was wondering if there was a similar "random access" way to do this. Given that it can be done using the jar tool, I had expected there to be a similar way to do it programmatically.
It is possible to update just parts of the JAR file using Zip File System Provider available in Java 7:
import java.net.URI;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.HashMap;
import java.util.Map;
public class ZipFSPUser {
public static void main(String [] args) throws Throwable {
Map<String, String> env = new HashMap<>();
env.put("create", "true");
// locate file system by using the syntax
// defined in java.net.JarURLConnection
URI uri = URI.create("jar:file:/codeSamples/zipfs/zipfstest.zip");
try (FileSystem zipfs = FileSystems.newFileSystem(uri, env)) {
Path externalTxtFile = Paths.get("/codeSamples/zipfs/SomeTextFile.txt");
Path pathInZipfile = zipfs.getPath("/SomeTextFile.txt");
// copy a file into the zip file
Files.copy( externalTxtFile,pathInZipfile,
StandardCopyOption.REPLACE_EXISTING );
}
}
}
Yes, if you use this opensource library you can modify it in this way as well.
https://truevfs.java.net
public static void main(String args[]) throws IOException{
File entry = new TFile("c:/tru6413/server/lib/nxps.jar/dir/second.txt");
Writer writer = new TFileWriter(entry);
try {
writer.write(" this is writing into a file inside an archive");
} finally {
writer.close();
}
}
I am trying to retrieve the owner of a file, using this code:
Path file = Paths.get( fileToExtract.getAbsolutePath() );
PosixFileAttributes attr = Files.readAttributes(file, PosixFileAttributes.class); //line that throws exception
System.out.println(attr.owner.getName());
taken from oracle's page (http://docs.oracle.com/javase/tutorial/essential/io/fileAttr.html)
but i always get a UnsupportedOperationException at the line i indicate above.
java.lang.UnsupportedOperationException
at sun.nio.fs.WindowsFileSystemProvider.readAttributes(WindowsFileSystemProvider.java:192)
at java.nio.file.Files.readAttributes(Files.java:1684)
I think that 'readAttributes' method is abstract and this cause the exception, but (if this is true) i don't know how to implement this method in order to give me the file attributes.
Does anyone know how to implement this method, or an alternative method (that is tested) to get the file owner?
Try this - works also on Windows
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.FileOwnerAttributeView;
import java.nio.file.attribute.UserPrincipal;
public class FileOwner {
public static void main(String[] args) throws IOException {
Path path = Paths.get("/tmp");
FileOwnerAttributeView ownerAttributeView = Files.getFileAttributeView(path, FileOwnerAttributeView.class);
UserPrincipal owner = ownerAttributeView.getOwner();
System.out.println("owner: " + owner.getName());
}
}
Use BasicFileAttributes instead.
BasicFileAttributes attr = Files.readAttributes(file, BasicFileAttributes.class);
Posix file attributes are not supported in Windows.
Here is is a sample for files permissions on UNIX/Linux platforms
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.PosixFileAttributes;
import java.nio.file.attribute.PosixFilePermission;
import java.nio.file.attribute.PosixFilePermissions;
import java.util.Set;
class A {
public static void main(String[] args) throws Exception
{
//Make sure file exists e.g. Unix path structure
Path p = Paths.get("/a/b/Log.txt");
PosixFileAttributes posix = Files.readAttributes(p,
PosixFileAttributes.class);
//Set Permissions if needs be for the file Log.txt
Set<PosixFilePermission> perms =
PosixFilePermissions.fromString("rw-r--r--");
Files.setPosixFilePermissions(p, perms);
//Output the various attributes of the file named Log.txt
System.out.println(posix.group());
System.out.println(posix.permissions());
System.out.println(posix.owner());
}
}
I have this code:
import java.net.URI;
import java.util.List;
import net.moraleboost.streamscraper.Stream;
import net.moraleboost.streamscraper.Scraper;
import net.moraleboost.streamscraper.scraper.IceCastScraper;
public class Harvester
{
public static void main(String[] args) throws Exception
{
Scraper scraper = new IceCastScraper();
List<Stream> streams = scraper.scrape(new URI("http://host:port/"));
for (Stream stream: streams) {
System.out.println("Song Title: " + stream.getCurrentSong());
System.out.println("URI: " + stream.getUri());
}
}
}
Where do I download JAR for import net.moraleboost.streamscraper.* to work? I can find source code for it but I gives me load of errors, can someone just provide me .jar so I could include in java build path library?
You can clone the repository at https://code.google.com/p/streamscraper/
You can also download the code from here: https://code.google.com/p/streamscraper/source/browse/