I have a problem during compilation of the program. The code itself has no errors.
Program code:
package plate;
import java.io.File;
import net.sourceforge.tess4j.Tesseract;
public class OcrReader {
public static void main(String[] args) throws Exception {
String inputFilePath = "C:\\Users\\Me\\eclipse-workspace\\platerecognition\\picture.tif";
Tesseract tesseract = new Tesseract();
String fullText = tesseract.doOCR(new File(inputFilePath));
System.out.println(fullText);
}
}
And the error after running the program:
Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/jna/Pointer
at plate.OcrReader.main(OcrReader.java:11)
Caused by: java.lang.ClassNotFoundException: com.sun.jna.Pointer
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
Related
I am having a problem with use of this open source development kit - https://github.com/cdk/cdk
Here is the java code for BasicProgram:
import org.openscience.cdk.interfaces.IAtom;
import org.openscience.cdk.Atom;
public class BasicProgram {
public static void main(String args[]) throws Exception {
IAtom atom = new Atom("C");
System.out.println(atom);
}
}
When I go to compile the class file is generated without errors, but doesn't seem to find the references in the jar file:
E:\Cheminformatics>javac -cp cdk-2.0.jar BasicProgram.java
E:\Cheminformatics>java -cp . BasicProgram
Exception in thread "main" java.lang.NoClassDefFoundError: org/openscience/cdk/Atom
at BasicProgram.main(BasicProgram.java:6)
Caused by: java.lang.ClassNotFoundException: org.openscience.cdk.Atom
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
package photo;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import com.github.sarxos.webcam.Webcam;
public class capture {
public static void main(String arg[]) throws IOException {
Webcam webcam = Webcam.getDefault();
webcam.open();
BufferedImage image = webcam.getImage();
ImageIO.write(image, "JPG", new File("test.jpg"));
}
}
I have written this java code to capture photo through webcam, but this code is throwing an error/exception please tell how can I fix it.?
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at com.github.sarxos.webcam.Webcam.<clinit>(Webcam.java:97)
at photo.capture.main(capture.java:12)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 2 more
Download SLF4J and put the slf4j-api-1.7.2.jar file onto your class path.
I've been messing around with ClassLoaders in java recently, trying to run my automation script code which uses dynamic loading of classes and geting ClassNotFoundException.
##MyCode
package com.actitime5.frameworkengine;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
import com.gmail5.Testcases.LoginLogout;
import org.junit.runner.JUnitCore;
public class Init {
public static void main(String args[]) throws Exception
{
Init in=new Init();
String url=in.getConfigValue("url");
ExcelLibrary lib=new ExcelLibrary();
JUnitCore core = new JUnitCore();
int numberofTestcases=lib.getRowCont("Scenario");
System.out.println(numberofTestcases);
for(int i=1;i<=numberofTestcases;i++)
{String status=lib.getExcelData("Scenario", i, 1);
if(status.equals("yes"))
{String scriptnam=lib.getExcelData("Scenario", i, 0);
System.out.println("Sheet Name"+" "+scriptnam);
Class scriptToRun= Class.forName("com.gmail5.Testcases."+scriptnam);
core.run(scriptToRun);
}
}}
##Errors that i am getting :
1
Sheet Name LoginLogout
Exception in thread "main" java.lang.ClassNotFoundException:com.gmail5.Testcases.LoginLogout
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.gmail5.frameworkengine.Init.main(Init.java:24)
The class which I am trying to load is available in package: com.gmail5.Testcases.*;,but still it throws exception
I think your class name has trailing whitespace. Try trim()ming it off before attempting to load the class.
You can confirm this by replacing
System.out.println("Sheet Name"+" "+scriptnam);
with
System.out.println("Sheet Name"+" '"+scriptnam+"'");
I expect this will print out something like the following:
Sheet Name 'LoginLogout '
When I clicked 'edit' to edit your question, I could see there was trailing whitespace after the class name in the stack trace and in your Sheet Name message. (I didn't change anything in your question: I just used the Edit function to see the raw text of your question, and then clicked Cancel.)
I have a Maven project in Eclipse created through m2e. It obtains client libraries from a project on GitHub called alternator. The classes seem to be imported fine, in my project, but on running them, it shows a NoClassDefFound error. Here's the code and the error:
Code:
public class Main{
private AlternatorDBClient client;
private DynamoDBMapper mapper;
private AlternatorDB db;
public static void main(String args[]) throws Exception{
new Main().run();
}
public void run() throws Exception {
this.client = new AlternatorDBClient();
this.mapper = new DynamoDBMapper(this.client);
this.db = new AlternatorDB().start();
}
}
Error:
Exception in thread "main" java.lang.NoClassDefFoundError: com/michelboudreau/alternator/AlternatorDBClient
at Main.run(Main.java:17)
at Main.main(Main.java:13)
Caused by: java.lang.ClassNotFoundException: com.michelboudreau.alternator.AlternatorDBClient
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 2 more
The AlternatorDBClient class is importing one or more classes which are not on your class path:
import com.amazonaws.*;
import com.amazonaws.handlers.HandlerChainFactory;
import com.amazonaws.http.ExecutionContext;
import com.amazonaws.http.HttpResponseHandler;
import com.amazonaws.http.JsonErrorResponseHandler;
import com.amazonaws.http.JsonResponseHandler;
import com.amazonaws.services.dynamodb.AmazonDynamoDB;
import com.amazonaws.services.dynamodb.model.*;
import com.amazonaws.services.dynamodb.model.transform.*;
import com.amazonaws.transform.JsonErrorUnmarshaller;
import com.amazonaws.transform.JsonUnmarshallerContext;
import com.amazonaws.transform.Unmarshaller;
import com.amazonaws.util.json.JSONObject;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
You are somehow missing:
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk</artifactId>
</dependency>
as a dependency in your project pom. As AlexR stated, please post your pom.
When I generated a Java Client through the web page of wso2esb for a deployed service "Hello". In addition to the HelloServiceCallBackHandler.java and HelloServiceStub.java I created the class entitled HelloClient.java:
package org.wso2.cs.helloservices;
import java.rmi.RemoteException;
import org.wso2.cs.helloservices.HelloServiceStub.SayHello;
import org.wso2.cs.helloservices.HelloServiceStub.SayHelloResponse;
public class HelloClient {
public static void main(String[] args) {
try {
String name= new String("Test");
HelloServiceStub stub= new HelloServiceStub();
SayHello sh= new SayHello();
sh.setName(name);
SayHelloResponse resp=stub.sayHello(sh);
System.out.println("Response : "+resp);
}catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
I have the following error:
<font color="red"> Exception in thread "main" java.lang.NoClassDefFoundError: javax/wsdl/extensions/soap/SOAPAddress
at org.wso2.cs.helloservices.HelloServiceStub.populateAxisService(HelloServiceStub.java:41)
at org.wso2.cs.helloservices.HelloServiceStub.<init>(HelloServiceStub.java:88)
at org.wso2.cs.helloservices.HelloServiceStub.<init>(HelloServiceStub.java:77)
at org.wso2.cs.helloservices.HelloServiceStub.<init>(HelloServiceStub.java:126)
at org.wso2.cs.helloservices.HelloServiceStub.<init>(HelloServiceStub.java:118)
at org.wso2.cs.helloservices.HelloClient.main(HelloClient.java:13)
Caused by: java.lang.ClassNotFoundException: javax.wsdl.extensions.soap.SOAPAddress
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 6 more</font>
This seems to be required jars not found (This complains about wsld4j). Please add AXIS2_HOME/lib folder to your program's classpath .