Issue
I am trying to create a Twitter app with Java, running the application from Idea works and the Tweet gets sent, however after running mvn clean package and java -jat TwitterClient-1.0-SNAPSHOT.jar, then clicking the send tweet button I get the following error:
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: twitter4j/conf/ConfigurationBuilder
at company.fourleafclover.TwitterClient.Main$1.actionPerformed(Main.java:59)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2313)
at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
at java.desktop/java.awt.Component.processMouseEvent(Component.java:6617)
at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
at java.desktop/java.awt.Component.processEvent(Component.java:6382)
at java.desktop/java.awt.Container.processEvent(Container.java:2264)
at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4993)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2322)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4934)
at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4563)
at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4504)
at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2308)
at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2773)
at java.desktop/java.awt.Component.dispatchEvent(Component.java:4825)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.lang.ClassNotFoundException: twitter4j.conf.ConfigurationBuilder
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
... 36 more
my Main class and pom.xml:
package company.fourleafclover.TwitterClient;
import twitter4j.*;
import twitter4j.Status;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.auth.AccessToken;
import twitter4j.conf.ConfigurationBuilder;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
public class Main {
public static void main(String[] args) {
System.out.println("Started!");
final JFrame frame = new JFrame("Twitter Client");
JLabel lblKey = new JLabel("API Key:");
JTextField tfKey = new JTextField(20);
lblKey.setLabelFor(tfKey);
JLabel lblSecret = new JLabel("API Secret:");
JTextField tfSecret = new JTextField(20);
lblSecret.setLabelFor(tfSecret);
JLabel lblToken = new JLabel("Access Token:");
JTextField tfToken = new JTextField(20);
lblToken.setLabelFor(tfToken);
JLabel lblASecret = new JLabel("Access Secret:");
JTextField tfAsecret = new JTextField(20);
lblASecret.setLabelFor(tfAsecret);
JLabel lblmsg = new JLabel("Message:");
JTextField tfmsg = new JTextField(20);
lblmsg.setLabelFor(tfmsg);
JButton btnGet = new JButton("Send tweet");
btnGet.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
String consumerKey = new String(tfKey.getText());
String consumerSecret = new String(tfSecret.getText());
String oAuthAccessToken = new String(tfToken.getText());
String oAuthAccessTokenSecret = new String(tfAsecret.getText());
String Msg = new String(tfmsg.getText());
ConfigurationBuilder cb = new ConfigurationBuilder();
cb.setDebugEnabled(true)
.setOAuthConsumerKey(consumerKey)
.setOAuthConsumerSecret(consumerSecret)
.setOAuthAccessToken(oAuthAccessToken)
.setOAuthAccessTokenSecret(oAuthAccessTokenSecret);
TwitterFactory tf = new TwitterFactory(cb.build());
Twitter twitter = tf.getInstance();
try {
Status status = twitter.updateStatus(Msg);
System.out.println("Successfully updated the status to [" + status.getText() + "].");
} catch (Exception te) {
te.printStackTrace();
}
JOptionPane.showMessageDialog(frame,
"Tweet sent!");
}
});
JButton btnLogin = new JButton("button");
JPanel panel = new JPanel();
panel.setLayout(new SpringLayout());
panel.add(lblKey);//API Key
panel.add(tfKey);//Api Key
panel.add(lblSecret);//Access Secret
panel.add(tfSecret);panel.add(lblToken);//API Token
panel.add(tfToken);//API Token
panel.add(lblASecret);
panel.add(tfAsecret);
panel.add(lblmsg);
panel.add(tfmsg);
panel.add(btnLogin);
panel.add(btnGet);
jtextfielddemo.SpringUtilities.makeCompactGrid(panel,
6, 2, //rows, cols
6, 6, //initX, initY
6, 6); //xPad, yPad
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(470, 200);
frame.getContentPane().add(panel);
frame.setVisible(true);
}
}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>company.fourleafclover</groupId>
<artifactId>TwitterClient</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>16</maven.compiler.source>
<maven.compiler.target>16</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.14.1</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.14.1</version>
</dependency>
<dependency>
<groupId>io.github.cdimascio</groupId>
<artifactId>dotenv-java</artifactId>
<version>2.2.0</version>
</dependency>
<dependency>
<groupId>org.twitter4j</groupId>
<artifactId>twitter4j-core</artifactId>
<version>4.0.7</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<!-- Build an executable JAR -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<mainClass>company.fourleafclover.TwitterClient.Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
I have also tried downladoing and importing Twitter4j-core into the Module Settings, which had no effect. Module Settings
Solution
Something is wrong with your build tag.
This works fine for me. You than have to take the one with jar-with-dependencies
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>Your.MainClass</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id> <!-- this is used for inheritance merges -->
<phase>package</phase> <!-- bind to the packaging phase -->
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>16</source>
<target>16</target>
</configuration>
</plugin>
</plugins>
</build>
Answered By - Luis
Answer Checked By - Clifford M. (JavaFixing Volunteer)
