including jar files to a classpath

Question

im trying to run a Sphinx's HelloWOrd program, it needs a .jar file to work.

im trying to add a jar file in the classpath, but im getting some errors

contend.util does not exist import edu.cmu.sphinx.frontend.util.Microphone; ^ home/karen/workspace/hola/src/hola/HelloWorld.java:4: package edu.cmu.sphinx.recognizer does not exist import edu.cmu.sphinx.recognizer.Recognizer; ^ home/karen/workspace/hola/src/hola/HelloWorld.java:5: package edu.cmu.sphinx.result does not exist import edu.cmu.sphinx.result.Result; ^ home/karen/workspace/hola/src/hola/HelloWorld.java:6: package edu.cmu.sphinx.util.props does not exist import edu.cmu.sphinx.util.props.ConfigurationManager; ^ home/karen/workspace/hola/src/hola/HelloWorld.java:11: cannot find symbol symbol : class ConfigurationManager location: class hola.HelloWorld ConfigurationManager cm; ^ home/karen/workspace/hola/src/hola/HelloWorld.java:14: cannot find symbol symbol : class ConfigurationManager location: class hola.HelloWorld cm = new ConfigurationManager(args[0]); ^ home/karen/workspace/hola/src/hola/HelloWorld.java:16: cannot find symbol symbol : class ConfigurationManager location: class hola.HelloWorld cm = new ConfigurationManager(HelloWorld.class.getResource("helloworld.config.xml")); ^ home/karen/workspace/hola/src/hola/HelloWorld.java:19: cannot find symbol symbol : class Recognizer location: class hola.HelloWorld Recognizer recognizer = (Recognizer) cm.lookup("recognizer"); ^ home/karen/workspace/hola/src/hola/HelloWorld.java:19: cannot find symbol symbol : class Recognizer location: class hola.HelloWorld Recognizer recognizer = (Recognizer) cm.lookup("recognizer"); ^ home/karen/workspace/hola/src/hola/HelloWorld.java:23: cannot find symbol symbol : class Microphone location: class hola.HelloWorld Microphone microphone = (Microphone) cm.lookup("microphone"); ^ home/karen/workspace/hola/src/hola/HelloWorld.java:23: cannot find symbol symbol : class Microphone location: class hola.HelloWorld Microphone microphone = (Microphone) cm.lookup("microphone"); ^ home/karen/workspace/hola/src/hola/HelloWorld.java:36: cannot find symbol symbol : class Result location: class hola.HelloWorld Result result = recognizer.recognize(); ^ 12 errors

my question is: I have to add all the packages that needs my project or only the jar file and the main class?

Sugest please!

This is the HelloWord Program:

package hola;

import edu.cmu.sphinx.frontend.util.Microphone;
import edu.cmu.sphinx.recognizer.Recognizer;
import edu.cmu.sphinx.result.Result;
import edu.cmu.sphinx.util.props.ConfigurationManager;

public class HelloWorld {
    public static void main(String [] args){
        System.out.println("VIcente y karen");
        ConfigurationManager cm;
        System.out.println("Karen entiende esto");
                if (args.length > 0) {
                    cm = new ConfigurationManager(args[0]);
                } else {
                    cm = new ConfigurationManager(HelloWorld.class.getResource("helloworld.config.xml"));
                }

                Recognizer recognizer = (Recognizer) cm.lookup("recognizer");
                recognizer.allocate();

                // start the microphone or exit if the programm if this is not possible
                Microphone microphone = (Microphone) cm.lookup("microphone");
                if (!microphone.startRecording()) {
                    System.out.println("Cannot start microphone.");
                    recognizer.deallocate();
                    System.exit(1);
                }

                System.out.println("Say: (Good morning | Hello) ( Bhiksha | Evandro | Paul | Philip | Rita | Will )");

                // loop the recognition until the programm exits.
                while (true) {
                    System.out.println("Start speaking. Press Ctrl-C to quit.\n");

                    Result result = recognizer.recognize();

                    if (result != null) {
                        String resultText = result.getBestFinalResultNoFiller();
                        System.out.println("You said: " + resultText + '\n');
                    } else {
                        System.out.println("I can't hear what you said.\n");
                    }
                }
    }

}

Answer 1

Most probably you did not import the right classes or packages in your program (are the package names correct? Seems like the compiler is not recognising them from the first few error lines).

Even though you have the JAR file with the classes in your classpath, you still have to import them in your specific class for the compiler to know which external classes you need.

You also have to do it for the inbuilt Java classes (java.util.ArrayList for example). If you provide your program we would be able to help you better.

If the Jar file you have also depends on other libraries, then they have to be provided too.

Open your JAR file with a zip program (such as winrar) and check if the packages you are importing exist. You should see a folder named edu, inside it further folders cmu/sphinx/frontend/util and then inside it Microphone.class. Similarly for edu.cmu.sphinx.recognizer with a file Recognizer.class.

If you are using an IDE (such as Eclipse, Netbeans or IntelliJ IDEA) make sure you are adding the jar file to the list of project libraries.

For Eclipse, you have to follow the procedure here