Develop Reference

java.lang.IncompatibleClassChangeError: Implementing class while reading the shape file

import org.opengis.feature.*;
import org.geotools.feature.*;
import org.geotools.data.*;
import java.io.*;
import java.util.*;
public class GeoOpen
{
public static void main(String[] args) {
File file = new File("states.shp");
try {
Map<String, String> connect = new HashMap();
connect.put("url", file.toURI().toString());
DataStore dataStore = DataStoreFinder.getDataStore(connect);
String[] typeNames = dataStore.getTypeNames();
String typeName = typeNames[0];
System.out.println("Reading content " + typeName);
FeatureSource featureSource = dataStore.getFeatureSource(typeName);
FeatureCollection collection = featureSource.getFeatures();
FeatureIterator iterator = collection.features();
try {
while (iterator.hasNext()) {
Feature feature = iterator.next();
GeometryAttribute sourceGeometry = feature.getDefaultGeometryProperty();
}
} finally {
iterator.close();
}
} catch (Throwable e) {
e.printStackTrace();}}
}
I have been trying to read the shape file in this code. But when executed the above file, getting java.lang.IncompatibleClassChangeError. I saw posts getting similar errors which were solved by using latest jars. Even though using the latest jars, I am getting this error.
java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.geotools.data.shapefile.ShpFiles.exists(ShpFiles.java:981)
at org.geotools.data.shapefile.ShpFiles.init(ShpFiles.java:172)
at org.geotools.data.shapefile.ShpFiles.<init>(ShpFiles.java:129)
at org.geotools.data.shapefile.ShapefileDataStoreFactory.createDataStore(ShapefileDataStoreFactory.java:195)
at org.geotools.data.shapefile.ShapefileDataStoreFactory.createDataStore(ShapefileDataStoreFactory.java:63)
at org.geotools.data.DataAccessFinder.getDataStore(DataAccessFinder.java:129)
at org.geotools.data.DataStoreFinder.getDataStore(DataStoreFinder.java:87)
at GeoOpen.main(GeoOpen.java:16)
Thanks in advance.

Unable to instrument apache httpclient using javaagent for spring boot uber jar application

I'm trying to write a javaagent with Bytebuddy to intercept apache httpclient requests and I want to use this agent for spring boot application. The agent works fine when I start my test spring boot application from Idea (run the main method directly). However, when I package the application into a spring boot uber jar and run it using java -javaagent:myagent.jar -jar myapplication.jar,
it throws the following exception.
onError:org.apache.http.impl.client.AbstractHttpClient
java.lang.NoClassDefFoundError: org/apache/http/HttpHost
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at net.bytebuddy.description.method.MethodList$ForLoadedType.<init>(MethodList.java:106)
at net.bytebuddy.description.type.TypeDescription$ForLoadedType.getDeclaredMethods(TypeDescription.java:985)
at net.bytebuddy.implementation.MethodDelegation$MethodContainer$ForExplicitMethods.ofStatic(MethodDelegation.java:1037)
at net.bytebuddy.implementation.MethodDelegation.to(MethodDelegation.java:247)
at net.bytebuddy.implementation.MethodDelegation.to(MethodDelegation.java:226)
at com.yiji.dtrace.agent.httpclient4.interceptor.HttpClient4Interceptors$1.transform(HttpClient4Interceptors.java:48)
at net.bytebuddy.agent.builder.AgentBuilder$Transformer$Compound.transform(AgentBuilder.java:457)
at net.bytebuddy.agent.builder.AgentBuilder$Default$Transformation$Simple$Resolution.apply(AgentBuilder.java:2791)
at net.bytebuddy.agent.builder.AgentBuilder$Default$ExecutingTransformer.transform(AgentBuilder.java:3081)
at sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at org.springframework.boot.loader.LaunchedURLClassLoader.doLoadClass(LaunchedURLClassLoader.java:170)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:142)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at org.springframework.boot.loader.LaunchedURLClassLoader.doLoadClass(LaunchedURLClassLoader.java:170)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:142)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at org.springframework.boot.loader.LaunchedURLClassLoader.doLoadClass(LaunchedURLClassLoader.java:170)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:142)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.yjf.common.net.HttpUtil.<init>(HttpUtil.java:118)
at com.yjf.common.net.HttpUtil.<init>(HttpUtil.java:81)
at com.yjf.common.net.HttpUtil.<clinit>(HttpUtil.java:78)
at com.daidai.dtrace.agent.test.Main.main(Main.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:53)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.apache.http.HttpHost
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 60 more
and here is my agent related code.
public class DTraceAgent {
public static TypeDescription abstractHttpClientDescription() {
return new TypeDescription.Latent("org.apache.http.impl.client.AbstractHttpClient",
Modifier.PUBLIC|Modifier.ABSTRACT,
TypeDescription.OBJECT,
Arrays.asList(httpClientDescription()));
}
public static TypeDescription httpHostDescription() {
return new TypeDescription.Latent("org.apache.http.HttpHost",
Modifier.PUBLIC|Modifier.FINAL,
TypeDescription.OBJECT,
Arrays.asList(new TypeDescription.ForLoadedType(Cloneable.class),
new TypeDescription.ForLoadedType(Serializable.class)));
}
public static TypeDescription httpContextDescription() {
return new TypeDescription.Latent("org.apache.http.protocol.HttpContext",
getInterfaceModifiers(),
TypeDescription.OBJECT,
null);
}
public static TypeDescription httpRequestDescription() {
return new TypeDescription.Latent("org.apache.http.HttpRequest",
getInterfaceModifiers(),
httpMessageDescription(),
null);
}
public static void premain(String arguments, Instrumentation instrumentation) {
new AgentBuilder.Default()
//.withBinaryLocator(binaryLocatorFor(instrumentation))
.withListener(DebugListener.getListener())
.type(is(abstractHttpClientDescription()))
.transform(new AgentBuilder.Transformer() {
public DynamicType.Builder transform(DynamicType.Builder builder,
TypeDescription typeDescription) {
return builder.method(named("execute")
.and(takesArguments(httpHostDescription(), httpRequestDescription(), httpContextDescription()))
.and(returns(named("org.apache.http.HttpResponse"))))
.intercept(MethodDelegation.to(HttpClientInterceptor4dot3Plus.class));
}
}).installOn(instrumentation);
}
}
public class HttpClientInterceptor4dot3Plus {
public static CloseableHttpResponse doExecute(
#SuperCall Callable<CloseableHttpResponse> client, #Argument(1)HttpRequest request
) throws Exception {
StringBuilder builder = new StringBuilder(1024);
if (request != null && request.getRequestLine() != null) {
RequestLine requestLine = request.getRequestLine();
builder.append(requestLine.getMethod()).append(" ").append(requestLine.getUri());
}
try (TraceScope scope = Trace.startSpanForEntry(builder.toString())) {
Trace.spanType(Span.SPAN_TYPE_HTTP);
try {
return client.call();
} catch (Exception e) {
Trace.exception(e);
throw e;
}
}
}
}
public class DebugListener {
public static AgentBuilder.Listener getListener() {
return new AgentBuilder.Listener() {
#Override
public void onTransformation(TypeDescription typeDescription, DynamicType dynamicType) {
System.err.println("onTransformation:" + typeDescription.getCanonicalName());
try {
dynamicType.saveIn(new File("generated_classes"));
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onIgnored(TypeDescription typeDescription) {
//System.err.println("onIgored:" + typeDescription.getCanonicalName());
}
#Override
public void onError(String typeName, Throwable throwable) {
System.err.println("onError:" + typeName);
throwable.printStackTrace();
}
#Override
public void onComplete(String typeName) {
//System.err.println("onComplete:" + typeName);
}
};
}
}
I think this problem is caused by the way spring boot uber jar bootstraps an application. Spring boot provides a dedicated class loader named LaunchedURLClassLoader to load application related classes from the uber jar, while javaagent jar is loaded by default system classloader (if my understanding is correct). So the apache httpclient lib (included in the uber jar) is not visible to the system classloader.
I tried to provider a BinaryLocator to the AgentBuilder, but it didn't work. Maybe the BinaryLocator was not correctly constructed. Anyway, a proper BinaryLocator maybe a possible solution.
Thanks a lot for any solutions or suggestions.
Other infomation may be helpful:
spring-boot version 1.3.1.RELEASE
byte-buddy 0.7.7, packaged into the agent using maven-assembly-plugin's jar-with-dependencies descriptorRef
apache httpclient 4.3.2

I solved this problem through two steps:
Use Spring Boot's dedicated ClassLoader to deligate to an unloaded type:
public static void premain(String arguments, Instrumentation instrumentation) {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
ClassFileLocator.Compound compound = new ClassFileLocator.Compound(ClassFileLocator.ForClassLoader.of(classLoader), ClassFileLocator.ForClassLoader.ofClassPath());
TypeDescription delegator = TypePool.Default.of(compound).describe(delegatorClass).resolve();
new AgentBuilder.Default()
//.withBinaryLocator(binaryLocatorFor(instrumentation))
.withListener(DebugListener.getListener())
.type(is(abstractHttpClientDescription()))
.transform(new AgentBuilder.Transformer() {
#Override
public DynamicType.Builder transform(DynamicType.Builder builder,
TypeDescription typeDescription) {
return builder.method(named("execute")
.and(takesArguments(httpHostDescription(), httpRequestDescription(), httpContextDescription()))
.and(returns(named("org.apache.http.HttpResponse"))))
.intercept(MethodDelegation.to(delegator));
}
}).installOn(instrumentation);
}
Package the javaagent jar into Spring Boot's uber-jar such that the delegator class can reference classes related to the intecepted classes.
This issue is discussed in greater detail in Byte Buddy's issue tracker.

Apache Spark MySQL JavaRDD.foreachPartition - why I getting ClassNotFoundException

I would like to save data from each partition to MySQL Database. For doing that I created Class which implements VoidFunction<> :
public class DatabaseSaveFunction implements VoidFunction<Iterator<String>> {
/**
*
*/
private static final long serialVersionUID = -7039277486852158360L;
public void call(Iterator<String> it) {
Connection connect = null;
PreparedStatement preparedStatement = null;
try {
Class.forName("com.mysql.jdbc.Driver");
connect = DriverManager.getConnection("jdbc:mysql://"
+ "xxx.us-west-2.rds.amazonaws.com" + "/"
+ "xxx", "xxx", "xxx");
preparedStatement = connect
.prepareStatement("insert into testdatabase.test values (default, ?)");
while (it.hasNext()) {
String outputElement = it.next();
preparedStatement.setString(1, "" + outputElement.length());
preparedStatement.executeUpdate();
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
connect.close();
preparedStatement.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
And in my main method class I'm calling:
output.foreachPartition(new DatabaseSaveFunction());
I'm getting following error:
15/05/06 15:34:00 WARN scheduler.TaskSetManager: Lost task 0.0 in stage 1.0 (TID 4, ip-172-31-36-44.us-west-2.compute.internal): java.lang.ClassNotFoundException: DatabaseSaveFunction
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
Worker log:
15/05/06 15:34:00 ERROR executor.Executor: Exception in task 1.0 in stage 1.0 (TID 5)
java.lang.ClassNotFoundException: DatabaseSaveFunction
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
Can anybody tell me what I'm doing wrong ? I would be very grateful for that.

Export the external class to jar and add that like sc.addJar("/path/x.jar") where sc is JavaSparkContext in your main. Then you wont get this error. The error is because you spark program is not able to find the class. Moreover in spark 1.3 and greater you can simple use a map options of jdbc and then use load("jdbc", options) to create a data frame and load data from any RDBMS. its really handy. I am not sure if this method works for connecting any RDBMS into spark. Please tell me if you have any other question.

My JavaFx (Java 1.7) project won't run in Java 1.8.0.0_5

I have a project that I did in java 1.7. Now I'm in Java 1.8. I have trouble compiling. It starts compiling well, but then brings an error:
file:/D:/standAloneDev/java/workingDir/live/WakiliProject/dist/run1908724736/WakiliProject.jar!/wakiliproject/Home.fxml
Location is not set.
screen hasn't been loaded!!!
The stack-trace
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:367)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:305)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:894)
at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:56)
at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:158)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at wakiliproject.WakiliProject.start(WakiliProject.java:68)
at com.sun.javafx.application.LauncherImpl$8.run(LauncherImpl.java:837)
at com.sun.javafx.application.PlatformImpl$7.run(PlatformImpl.java:335)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:301)
at com.sun.javafx.application.PlatformImpl$6$1.run(PlatformImpl.java:298)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$6.run(PlatformImpl.java:298)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$300(WinApplication.java:39)
at com.sun.glass.ui.win.WinApplication$4$1.run(WinApplication.java:112)
... 1 more
Exception running application wakiliproject.WakiliProject
Java Result: 1
Deleting directory D:\standAloneDev\java\workingDir\live\WakiliProject\dist\run1908724736
jfxsa-run:
BUILD SUCCESSFUL (total time: 34 seconds)
The error is at:
HomeController.iconifyStageLabel.setOnMousePressed((MouseEvent event) -> {
primaryStage.setIconified(true);
});
HomeController.closeStageLabel.setOnMousePressed((MouseEvent event) -> {
primaryStage.close();
});
The rest of the class looks something like:
Please note line: // This is where compilation seems to stop at ... below
public class HomeController implements Initializable, ControlledScreen {
Agenda lAgenda;
Pane visibleCenterPane;
Map<String, Agenda.AppointmentGroup> lAppointmentGroupMap;
public static boolean currentSessionState = true;
List countriesTableInitItems = RetrieveInitialDBItems.retrieveCountriesList();
#FXML
public static TableView<NewBeautifulKiwiPOJO> KIWI_TABLE;
#FXML
public static TableColumn<NewBeautifulKiwiPOJO, Object> KiwiId;
#FXML
public static TableColumn<NewBeautifulKiwiPOJO, String> Kiwi;
#FXML
public static TableColumn<NewBeautifulKiwiPOJO, Boolean> KiwiAction;
#FXML
private TableColumn<NewBeautifulKiwiPOJO, String> selectablesKiwi;
#FXML
public static TableView<InitialDBItemsPOJO> COUNTRIES_TABLE;
#FXML
private TableColumn<InitialDBItemsPOJO, Integer> countryID;
#FXML
private TableColumn<InitialDBItemsPOJO, String> country;
// Settings TableView
#FXML
public static TableView<SettingsPOJO> settingsTableView;
#FXML
public static TableColumn<SettingsPOJO, Integer> userID;
#FXML
public static TableColumn<SettingsPOJO, String> primaryEmail;
ScreensController myController;
private IntegerProperty index = new SimpleIntegerProperty();
// Initializes the controller class.
#Override
public void initialize(URL url, ResourceBundle rb) {
// Set up Tables
// SettingsTableView.settingsTableView();
new KiwiTableView().kiwiTableView();
KIWITextField.addEventFilter(KeyEvent.KEY_TYPED, maxLength(140));
System.out.println("KIWITextField initialized to check fo count....");
visibleCenterPane = homeContentDisplay;
countryID.setCellValueFactory(new PropertyValueFactory<InitialDBItemsPOJO, Integer>("countriesListID"));
country.setCellValueFactory(new PropertyValueFactory<InitialDBItemsPOJO, String>("countriesList"));
COUNTRIES_TABLE.setItems((ObservableList<InitialDBItemsPOJO>) countriesTableInitItems);
// Set the total number of Kiwis posted
totalKiwiStatus.setText(totalKiwiStatus());
// This is where compilation seems to stop at
lAgenda = new Agenda();
lAgenda.setPrefWidth(498);
lAgenda.setPrefHeight(191);
for (CalendarPOJO e : new RetrieveAgenda().RetrieveAgenda()) {
lAgenda.appointments().add(
new Agenda.AppointmentImpl()
.withStartTime(e.getStartTime())
.withEndTime(e.getEndTime())
.withSummary(e.getSummury())
.withDescription(e.getDescription())
.withAppointmentGroup((new AgendaAppointmentGroups().lAppointmentGroupMap(e.getAppointmentGroup()))));
}
// accept new appointments
lAgenda.createAppointmentCallbackProperty().set(new Callback<Agenda.CalendarRange, Agenda.Appointment>() {
public Agenda.Appointment call(Agenda.CalendarRange calendarRange) {
return new Agenda.AppointmentImpl()
.withStartTime(calendarRange.getStartCalendar())
.withEndTime(calendarRange.getEndCalendar())
.withSummary("Add new appointment here")
.withDescription("new")
.withAppointmentGroup(lAppointmentGroupMap.get("group1"));
}
});
agendaPane.getChildren().add(lAgenda);
}
#Override
public void setScreenParent(ScreensController screenParent) {
myController = screenParent;
}
}
What could I be doing wrong? Thank you all.

NoClassDefFoundError while trying to use NxParser

I am trying to read a N-Triples (.nt) DBpedia file with NxParser, but I had the following error, and I don't know what to do.
Exception in thread "main" java.lang.NoClassDefFoundError: org/semanticweb/yars/nx/parser/NxParser$1
at org.semanticweb.yars.nx.parser.NxParser.stringItFromBufferedReader(Unknown Source)
at org.semanticweb.yars.nx.parser.NxParser.<init>(Unknown Source)
at org.semanticweb.yars.nx.parser.NxParser.<init>(Unknown Source)
at SentencesMatching_prova.main(SentencesMatching_prova.java:29)
Caused by: java.lang.ClassNotFoundException: org.semanticweb.yars.nx.parser.NxParser$1
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 4 more
The source code of the script is:
import java.io.*;
import org.semanticweb.yars.nx.parser.*;
public class SentencesMatching_prova {
public static void main(String[] args) {
try {
String relationFileName = "../zzz-trash/revisions_en.nt";
FileInputStream is = new FileInputStream(relationFileName);
NxParser nxp = new NxParser(is);
while (nxp.hasNext()) {
// do stuff
}
} catch (Exception ex) {
ex.printStackTrace(System.out);
}
}
}