java.lang.ClassNotFoundException: org.postgresql.Driver, Android

You need to add the PostgreSQL JDBC Driver in your project as mentioned in Gradle: implementation ‘org.postgresql:postgresql:42.2.10’ Maven: <dependency> <groupId>org.postgresql</groupId> <artifactId>postgresql</artifactId> <version>42.2.10</version> </dependency> You can also download the JAR and import to your project manually. NOTE: Compile as used in this answer is deprecated. Replace with implementation as per 3.

Android E/Parcel﹕ Class not found when unmarshalling (only on Samsung Tab3)

For some strange reason it looks like the class loader isn’t set up properly. Try one of the following in TestActivity.onCreate(): TestParcel cfgOptions = getIntent().getParcelableExtra(“cfgOptions”); Intent intent = getIntent(); intent.setExtrasClassLoader(TestParcel.class.getClassLoader()); TestParcel cfgOptions = intent.getParcelableExtra(“cfgOptions”); Bundle extras = getIntent().getExtras(); extras.setClassLoader(TestParcel.class.getClassLoader()); TestParcel cfgOptions = extras.getParcelable(“cfgOptions”); Alternatively, wrap the parcelable into a bundle: Bundle b = new Bundle(); … Read more

Android ClassNotFoundException

I can’t help but notice that your Activity name is couk.doridori.goigoFull.Board but your missing custom View class is couk.doridori.goigo.customUI.GoBoardView … it looks like you might have two different packages (goigo vs goigoFull). Are you by any chance doing clever things with library projects? You’ll want to be really careful with fully-qualified classnames in code and … Read more

org.glassfish.jersey.servlet.ServletContainer ClassNotFoundException

The problem: java.lang.ClassNotFoundException: org.glassfish.jersey.servlet.ServletContainer indicates that you try to use the Jersey 2.x servlet, but you are supplying the Jersey 1.x libs. For Jersey 1.x you have to do it like this: <servlet> <servlet-name>Jersey REST Service</servlet-name> <servlet-class> com.sun.jersey.spi.container.servlet.ServletContainer </servlet-class> <init-param> <param-name></param-name> <param-value>sample.hello.resources</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>Jersey REST Service</servlet-name> <url-pattern>/rest/*</url-pattern> </servlet-mapping> For more information check … Read more

android.content.ActivityNotFoundException: Unable to find explicit activity class

You declared package name in the manifest as com.Android.myApp and Activity Name .Example.So android will search it from com.Android.myApp.Example. But your activity is residing in “com.Android.myApp/com.Android.myApp.Facebook.Example“.So give the activity name as .Facebook.Example or full path as given below In the manifest <activity android:name=”com.Android.myApp.Facebook.Example”> </activity>

java.lang.ClassNotFoundException on working app

Yep, I had this exact same problem. It was because I specified the android:name attribute in the application node in the manifest file. Your Android Manifest file probably looks something like this: <application android:name=”Novak ESC Track guide” android:icon=”@drawable/icon” android:label=”@string/app_name” android:description=”@string/help_text” > Do not use the android:name attribute! unless you’ve implemented a custom Application object. The … Read more

java.lang.ClassNotFoundException in spite of using CLASSPATH environment variable

The CLASSPATH environment variable is only used by the java.exe command and even then only when used without any of the -cp, -classpath, -jar arguments. It is ignored by IDEs like Eclipse, Netbeans and IDEA. That environment variable is in real world also considered a poor practice since it breaks portability. I.e. program X will … Read more

java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener

I had a similar problem when running a spring web application in an Eclipse managed tomcat. I solved this problem by adding maven dependencies in the project’s web deployment assembly. Open the project’s properties (e.g., right-click on the project’s name in the project explorer and select “Properties”). Select “Deployment Assembly”. Click the “Add…” button on … Read more