NoClassDefFoundError是一个错误(Error),而ClassNOtFoundException是一个异常,在Java中对于错误和异常的处理是不同的,我们可以从异常中恢复程序但却不应该尝试从错误中恢复程序。 ClassNotFoundException的产生原因: Java支持使用Class.forName方法来动态地加载类,任意一个类的类名如果被作为参数传递给这个方法都将导致该类...
从两个异常的定义看,NoClassDefFoundError是一种unchecked exception(也称 runtime exception),而ClassNotFoundException 是checked exception。 NoClassDefFoundError Java 规范(源码) /** * Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a ...
1. The forName method in class Class. 2. The findSystemClass method in class ClassLoader . 3. The loadClass method in class ClassLoader. but no definition for the class with the specified name could be found. 从规范说明看, java.lang.ClassNotFoundException 异常抛出的根本原因是类文件找不到...
所以,类的动态加载有可能引发ClassNotFoundException异常时,我们可以在此处catch这个异常来处理。 NoClassDefFoundError产生的原因 源码注释 同样,来看一下源码注释 Thrownifthe Java Virtual Machineora*ClassLoader*instance triestoloadinthe definition of aclass(aspart of a normal method calloraspart of creating a ...
Java ClassNotFoundException thrown when an application tries to load in a class through its string name using: The forName method in class Class. The findSystemClass method in class ClassLoader . The loadClass method in class ClassLoader. ...
ThefindSystemClassmethod in classClassLoader. TheloadClassmethod in classClassLoader. but no definition for the class with the specified name could be found. As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism. The "optional exception ...
In this tutorial, we will discuss the java.lang.classnotfoundexception –ClassNotFoundException. Thisexceptionis thrown when an application tries to load a class through its string name, but no definition for the specified class name could be found. A class can be loaded using one of t...
当出现这个异常时,我的第一反应是,它跟ClassNotFoundException有什么不同。为了找到确切的答案我查看了它的api, /*Thrown if the Java Virtual Machine or aClassLoaderinstance * tries to load in the definition of a class (as part of a normal method call ...
As the Javadoc states "The searched-for class definition existed when the currently executing class was compiled, but the definition can no longer be found." ClassNotFoundException is only thrown when trying to load a class that is not known during compile time using Class.forName or similar...
Definition Namespace: Java.Lang Assembly: Mono.Android.dll Thrown when an application tries to load in a class through its string name using: The forName method in class Class. C# コピー [Android.Runtime.Register("java/lang/ClassNotFoundException", DoNotGenerateAcw=true)] public class ...