We can resolve the java. lang. ExceptionInInitializerError by ensuring that static initializer block of classes does not throw any Runtime Exception. We can resolve also resolve this exception by ensuring that the initializing static variable of classes also doesn’t throw any Runtime Exception.
What does Java Lang ExceptionInInitializerError mean?
An ExceptionInInitializerError is thrown to indicate that an exception occurred during evaluation of a static initializer or the initializer for a static variable. As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism.
What is exception in thread main Java Lang ExceptionInInitializerError?
lang. NoClassDefFoundError is a common error in Java that occurs if a ClassLoader cannot find a particular class in the classpath while trying to load it. The Exception in thread “main” suggests that this error has occurred in the main thread, the thread which is responsible for running the Java application.
How do you handle exception initializer error?
getException() : Returns the exception that occurred during a static initialization that caused this error to be created. However, after the exception has conformed to the general-purpose exception chaining, the preferred method to use is getCause . getCause() :Returns the exception that caused this error to be thrown.
How do you solve NoClassDefFoundError?
NoClassDefFoundError, which means the Class Loader file responsible for dynamically loading classes can not find the . class file. So to remove this error, you should set your classpath to the location where your Class Loader is present.
Why do we get InvocationTargetException?
2. Cause of InvocationTargetException. It mainly occurs when we work with the reflection layer and try to invoke a method or constructor that throws an underlying exception itself. The reflection layer wraps the actual exception thrown by the method with the InvocationTargetException.
How do you handle Java Lang ClassNotFoundException?
How to Resolve ClassNotFoundException in Java
- Find out which JAR file contains the problematic Java class. …
- Check whether this JAR is present in the application classpath. …
- If that JAR is already present in the classpath, make sure the classpath is not overridden (e.g. by a start-up script).
What is exception in thread in Java?
JVM (Java Runtime System) will throw an exception named IllegalThreadStateException whenever we attempt to call a method that a thread cannot handle in the given state. …
What is not initialize exception?
If the arguments are not OK, you can throw IllegalArgumentException, if some file is not there, you can throw FileNotFoundException, if the factory is not initialized properly, you can throw IllegalStateException, etc., etc… However, creating your own Exception is easy.
What is illegal state exception in Java?
Exception thrown when an app tries to start a foreground Service when it’s not allowed to do so. Signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.
How do you fix assertion errors?
In order to handle the assertion error, we need to declare the assertion statement in the try block and catch the assertion error in the catch block.
Why do we get NoClassDefFoundError?
Just like ClassNotFoundException, NoClassDefFoundError occurs at runtime. We get this error when the class is not available in the program at runtime. It is an unchecked exception which a program throws when the requested class is not present at runtime.
What is a Java Lang NoClassDefFoundError?
java. lang. NoClassDefFoundError is runtime error thrown when a required class is not found in the classpath and hence JVM is unable to load it into memory.
What is Java Lang ClassNotFoundException?
lang. ClassNotFoundException is thrown when the Java Virtual Machine (JVM) tries to load a particular class and the specified class cannot be found in the classpath. The Java ClassNotFoundException is a checked exception and thus, must be declared in a method or constructor’s throws clause.