in this code i select mp3 path is "D:/camera.wav". when i make jar file of this code, it play in only my system. please tell me how to add camera.wav file to my project and give that url to my project. because i want same music should play for all systems, even though they don't have that music.
import java.io.File;
import javax.media.Format;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.Player;
import javax.media.PlugInManager;
import javax.media.format.AudioFormat;
public class maintest
{
public static void main(String[] args)
{
//float v=1;
Format input1 = new AudioFormat(AudioFormat.MPEGLAYER3);
Format input2 = new AudioFormat(AudioFormat.MPEG);
Format output = new AudioFormat(AudioFormat.LINEAR);
PlugInManager.addPlugIn("com.sun.media.codec.audio.mp3.JavaDecoder",
new Format[]{input1, input2},
new Format[]{output},
PlugInManager.CODEC );
try
{
Player player = Manager.createPlayer(new MediaLocator(new File("D:/camera.wav").toURI().toURL()));
//player.getGainControl().setLevel(v);
player.start();
}
catch(Exception ex){
ex.printStackTrace();
}
}
}
JMF is .. ancient. it hasn't been maintained/updated for years, so especially if you want to have some "modern" code, JMF is not the best option.
personally, I once created (al be it a simple one) a small mp3 player, using the JLayer library which you can find here
it has plenty of documentation and examples so it shouldn't take too long to get you going.
You need the MP3 Plugin. Or if that doesn't work, this plugin is also a good resource.
You can also use JavaFX for playing MP3's. If you use Netbeans just create a new project and select JavaFX project instaed of a normal Java project
Related
ok i am a new one here and tried to write an awesome program:
package f;
import javax.swing.*;
public class dasMain {
public static void main(String[] args) {
ImageIcon img = new ImageIcon("pics/daFaq.png");
JOptionPane.showMessageDialog(null, img, "u r heck", JOptionPane.PLAIN_MESSAGE);
}
}
the thing is that if I run the program from Intellij Idea, then everything works fine, but after compilation the picture disappears
here are the source files of the project:
https://i.ibb.co/Njc8jYp/screen.png
i want to run this awesome code with pictures on other computers, but i only know this way and it doesn't work :(
You probably do not know where your program expects the picture to be. If you modify your code slightly, this information would be evident. Make use of
ImageIcon(URL)
File.toURI()
URI.toURL()
With that your code can look like this:
package f;
import javax.swing.*;
import java.io.File;
public class dasMain {
public static void main(String[] args) {
File png = new File("pics/daFaq.png");
System.out.println("Loading image from " + png.getAbsolutePath());
ImageIcon img = new ImageIcon(png.toURI().toURL());
JOptionPane.showMessageDialog(null, img, "u r heck", JOptionPane.PLAIN_MESSAGE);
}
}
Also I am pretty sure you intend to ship the png together with your code, so you better load it as a resource from the classpath. Here is an example.
I also investigated a bit why you would not see any error message or exception. This is documented in ImageIcon. So you might want to verify the image was loaded using getImageLoadStatus().
If you access the resource with the path like pics/file_name.png, then the pics - is the package name. And it must be located in the directory, marked as resource type. For example, create the directory, named resources in your project root, mark this directory as resource type, and move the pics there:
P. S. I would advise to use Maven or Gradle build system for managing project builds. As it is commonly accepted build management systems for the JVM projects. IDE New Project Wizard has the option to create Maven or Gradle based projects.
i'm trying to use itext (5.5.13) in IBM i (AKA iseries, Power, long ago AS/400). It could be done embedding java code into RPG ILE procedures, or executing plain java. We use Apache POI for Excel for a while, and it works well. We are testing itext now, but some issue persist yet.
Given that, I'm trying to test itext in plain java into IBM i. I prepared a very simple example, taken from listing 1.1 of "Itext in action", and run it. It seems to work well, but nothing is generated. No pdf file results. And no error appears while running.
am i forgetting something? are there some other aspects to take in account?
here is the code:
package QOpenSys.CONSUM.Testjeu;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
public class test1{
public static final String filePdf = "/QOpenSys/MyFolder/Testjeu/PdfRead1.pdf";
public static void main(String[] args)
throws DocumentException, IOException
{
///QOpenSys/MyFolder/Test/WrkBookRead1.pdf
//pdfDocument = new_DocumentVoid()
Document pdfDocument = new Document();
//pdfWriter = get_PdfWriter( pdfDocument: pdfFilePath);
PdfWriter.getInstance(pdfDocument, new FileOutputStream( filePdf ));
// jItxDocumentOpen( pdfDocument );
pdfDocument.open();
//pdfParagraph = new_PdfParagraphStr( PhraseString );
Paragraph jItxParagraph = new Paragraph("Hola, pdf");
//addToDocPg = jItxDocumentAddParagraph( pdfDocument: pdfParagraph );
pdfDocument.add(jItxParagraph);
//jItxDocumentClose( pdfDocument );
pdfDocument.close();
}
}
Solved. As said before, there was a first issue: it seems java function ran well because not errors/warnings were visible at qshell. It was false: errors were sent to outq, and were available at spool file. Being reviewed, it was a simple classpath issue. It required a full day to figure out what failed locating classpath.
Now it works, and pdf is created. I ran it on qshell, declaring environment variables for java_home (three jvm are executed concurrently by several applications), for classpath, and a couple required for tracing. Classpath declares first my class and secondly itext classes. Remaining classes comes from JRE. I have a full list of classes loaded by class loader. I hope it will help to find what fails in our embedded RPG ILE call to itext.
I am trying to abtain the output (for example: cat: 0,988; dog: 0.012) from NeurophStudio using java. The neural net recognises the images well. I found the code below. I get errors in the first two import lines. Does anyone know where I can find/download these packages? I searched through all my directories already and didn't find it.
import org.neuroph.core.NeuralNetwork; // ! error
import org.neuroph.contrib.imgrec.ImageRecognitionPlugin; // ! error
import java.util.HashMap;
import java.io.File;
import java.io.IOException;
public class ImageRecognitionSample {
public static void main(String[] args) {
// load trained neural network saved with Neuroph Studio (specify some existing neural network file here)
NeuralNetwork nnet = NeuralNetwork.load("Neural Networks/Iconnet25-8.nnet"); // load trained neural network saved with Neuroph Studio
// get the image recognition plugin from neural network
ImageRecognitionPlugin imageRecognition = (ImageRecognitionPlugin)nnet.getPlugin(ImageRecognitionPlugin.class); // get the image recognition plugin from neural network
try {
// image recognition is done here (specify some existing image file)
HashMap<String, Double> output = imageRecognition.recognizeImage(new File("testimage.png"));
System.out.println(output.toString());
} catch(IOException ioe) {
ioe.printStackTrace();
}
}
}
source : http://neuroph.sourceforge.net/image_recognition.html
I found the package code here : https://github.com/neuroph/neuroph/tree/master/neuroph-2.9/Core/src/main/java/org/neuroph/core
Problem: this is not downloadable and I will probably need multiple files/entire package.
Does anyone have experience with this? Any solutions?
download neuroph.jar
then locate it to your project
like this
right click on your project
properties
Libraries
add jar/folder
then show the path where you put the neuroph.jar
hope it will help you!!!!
I need capture a video stream from my USB webcam, for this i use Opencv 2.4.6 for developing in Java. I follow the steps listed in here
I add the "C:\opencv\build\java\x64" dir to my System PATH and include the "opencv-246.jar" file into my libraries on ECLIPSE. When y run the explame
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
public class Main {
public static void main(String[] args) {
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
Mat m = Mat.eye(3, 3, CvType.CV_8UC1);
System.out.println("m = " + m.dump());
}
}
i get
m = [1, 0, 0;
0, 1, 0;
0, 0, 1]
OK =)
but when i run
import org.opencv.highgui.VideoCapture;
public class Main {
public static void main(String[] args) {
VideoCapture vc = new VideoCapture(0);
if(vc.isOpened()){
System.out.println("Works!");
}
}
}
i get
Exception in thread "main" java.lang.UnsatisfiedLinkError: org.opencv.highgui.VideoCapture.n_VideoCapture(I)J
at org.opencv.highgui.VideoCapture.n_VideoCapture(Native Method)
at org.opencv.highgui.VideoCapture.<init>(VideoCapture.java:113)
at Main.main(Main.java:5)
i add all the routes containes in:
C:\opencv\build\x64\vc10
one by one,but doesn`t work.
Finally i create a variable called OPENCV_DIR with C:\opencv\build\x64\vc10 but still getting UnsatisfiedLinkError.
PLEASE HELP ME!
in your second example , you skipped this line
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
so the opencv libs werent loaded, UnsatisfiedLinkError, etc...
[edit]:
thanks to #Jishnu Prathap for highlighting the java.library path issue, if you run into problems setting that, you can still try to use an absolute path to the java wrapper so/dll/dylib like:
System.load("/path to/our/java_wrapper");
I had a similar error while using OpenCV with java.I did 2 things to resolve it.
static{ System.loadLibrary(Core.NATIVE_LIBRARY_NAME); }
I added the path to OpenCV dll or .so to javalibpath or path. which actually didnt work for some reason and i ended up putting the OpenCV dll in the system32 folder.
Try the below code
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import nu.pattern.OpenCV;
public class OpencvMain
{
public static void main( String[] args )
{
OpenCV.loadLocally();
Mat mat = Mat.eye( 3, 3, CvType.CV_8UC1 );
System.out.println( "mat = " + mat.dump() );
}
}
For general users using opencv3.x:
HighGUI module does not exist anymore in Java for opencv 3.0 and above.
import org.opencv.videoio.VideoCapture;
instead of
import org.opencv.highgui.VideoCapture;
videoio includes VideoCapture, VideoWriter.
Similarly:
imgcodecs includes imread/imwrite and friends
Example:
Highgui.imread(fileName)
-->
Imgcodecs.imread(fileName)
So, I was having this problem too and I did what you all suggested, it worked fine in my x64 windows, but in a x86 couldn't make it work.
At last I found a solution by changing:
VideoCapture capture = new VideoCapture(0);
for
VideoCapture capture = new VideoCapture();
capture.open("resources/vid.MP4");
I don't know why this worked but I hope it may help somebody with my same problem.
I tried a lot of tutorials online for the resolution, only one of them have helped me.
There are two steps that are different in this method,
Firstly, while importing the java project from Opencv SDK into the Android studio, make sure to uncheck all the checkboxes presented in the import dialog.
Secondly, make sure you import the OpenCV.mk file that is in the native/jdk of the SDK..
The System.loadLibrary() seems to return true after this, which was a huge relief for me as it took me several hours to figure this out
Here's the link to the tutorial that helped me
https://medium.com/#rdeep/android-opencv-integration-without-opencv-manager-c259ef14e73b
I am currently putting a program into a .jar, and have difficulties telling it where to get its data from. The data was inside of a file in the project, and I am sure that it is located in the jar as well. But I have no clue on how to get a path into a jar.
I found the getClass().getClassLoader().getResourceAsStream() method online to get an input stream into the jar, but since I used FileReaders all the time, I dont know what to do with it as well..
I`d be very thankful for any help.
Edit:
Here is a picture of how the directory is organized:
My command window shows what happens if I run the .jar. Nullpointer in line 30. I tried it with and without .getClassLoader(), it just wont find it.
Here is the inside of the jar:
again, app is where the class files are in. Hence, via class.getResource.. I should be able to search in DataPackeg. Man, this is wearing me out.
A key concept to understand is that files don't exist inside of jars. You must instead get your data as a read-only resource, and you will need to use a path that is relative to path of your class files.
If you're still stuck, you may need to tell us more specifics about your current program, its structure, what type of data you're trying to get, where it's located in the jar file, and how you're trying to use it.
For instance, say your package structure looked like this:
So the class file is located in the codePackage package (this is Eclipse so the class files live in a universe parallel to the java files), and the resource's location is in the codePackage.images package, but relative to the class file it is the images directory, you could use the resource like so:
package codePackage;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
public class ClassUsesResources {
private JLabel label = new JLabel();
public ClassUsesResources() {
try {
BufferedImage img = ImageIO.read(getClass().getResourceAsStream(
"images/img001s.jpg"));
ImageIcon icon = new ImageIcon(img);
label.setIcon(icon);
JOptionPane.showMessageDialog(null, label);
} catch (IOException e) {
e.printStackTrace();
System.exit(-1);
}
}
public static void main(String[] args) {
new ClassUsesResources();
}
}