classnotfound

问题 I cannot import JSONObject, I thought this was something that came with java and an external jar is not needed, why is it saying it cannot find it? 回答1: I thought this was something that came with java and an external jar is not needed No - JsonObject is only in JavaEE . JSONObject isn't included in JavaSE, it needs an external library. You can find it on github. However, if you use JavaEE, it is included. If you are using gradle, add the following to your build.gradle file (available in

问题 I am trying to use Firebird 3.0 from Laravel 6.0 and I am following https://firebirdsql.org/file/documentation/reference_manuals/fbdevgd-en/html/fbdevgd30-php-Laravel-crt-project.html where the package https://github.com/sim1984/laravel-firebird is suggested. Unfortunately, this package is intended for Laravel 5.7 (or maybe it has not been published in composer repositories) that is why I received the following message while I was trying to install this package: [InvalidArgumentException]

问题 I am trying to use Firebird 3.0 from Laravel 6.0 and I am following https://firebirdsql.org/file/documentation/reference_manuals/fbdevgd-en/html/fbdevgd30-php-Laravel-crt-project.html where the package https://github.com/sim1984/laravel-firebird is suggested. Unfortunately, this package is intended for Laravel 5.7 (or maybe it has not been published in composer repositories) that is why I received the following message while I was trying to install this package: [InvalidArgumentException]

问题 I was working on a project in Android Studio in which I had to use a navigation drawer, everything was running well. Recently Android Studio updated to 1.2 version and suddenly the activity where the the nav drawer was stopped rendering giving me that error. I know that it is a known error and it happened to me before, but this time I can´t get it fixed. The dependencies are set like this: dependencies { compile fileTree(include: ['*.jar'], dir: 'libs') compile 'com.android.support:support-v4

问题 I need some common behaviors in all controllers. Is a good idea have a BaseController and make all controllers extend that class? If so, What is the correct way to avoid the Fatal error: Class 'BaseController' not found error. 回答1: It's certainly a common approach. But an article by ZF project lead Matthew Weier O'Phinney explains how action-helpers can provide the same benefits with more flexibility. In particular, a common base controller often becomes a dumping ground for functionality

问题 When I create an ALIAS for registering the java function in the H2 database, it gives error of class not found. I am running the h2 database on a tcp connection. sample, public class TimeFrame { public static void main(String... args) throws Exception { Class.forName("org.h2.Driver"); Connection conn = DriverManager.getConnection("jdbc:h2:tcp://MYIP:9092/~/test", "sa", ""); Statement stat = conn.createStatement(); //Setup Table stat.execute("DROP TABLE IF EXISTS timeframe"); stat.execute(

问题 I am writing a simple Hibernate program on Eclipse. I did everything steps by steps but then after compiling its showing: Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [Employee] Caused by: java.lang.ClassNotFoundException: Could not load requested class : Employee I added all the required jar library too. This is my project structure: 回答1: Using resource mapping As you are using a mapping resource, the problem is with class path mentioned

问题 I'm new to the Xamarin. I'm trying to create my own view in an Android aplication, but it's throwing an ClassNotFoundException on constructor. I was searching for similar issues but I haven't found similar one (only here is something that I think may be quite similar, but it isn't solved in fact — answers tell to edit java file, but it's not possible when working in Xamarin). Here's my code of MainActivity.cs: using Android.App; using Android.OS; namespace App5 { [Activity(Label = "App5",

问题 I'm new to the Xamarin. I'm trying to create my own view in an Android aplication, but it's throwing an ClassNotFoundException on constructor. I was searching for similar issues but I haven't found similar one (only here is something that I think may be quite similar, but it isn't solved in fact — answers tell to edit java file, but it's not possible when working in Xamarin). Here's my code of MainActivity.cs: using Android.App; using Android.OS; namespace App5 { [Activity(Label = "App5",

问题 I'm attempting to get a local Tomcat environment running and am consistently encountering the following error: Can't load log handler "2localhost.org.apache.juli.FileHandler" java.lang.ClassNotFoundException: 2localhost.org.apache.juli.FileHandler java.lang.ClassNotFoundException: 2localhost.org.apache.juli.FileHandler 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