Flashcards

Logging

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Flashcards do conjunto (5)

1Welche Logging Levels gibt esSevere
Warning
Info
Config
Fine
Finer
Finest
2Debugging Exceptions - ClassNotFoundExceptionCause: Class we are trying to use is not present on the classpath
Missing class -> if the class we are referencing is not present in any of the directories or jar files on the class path
Incorrect path -> Even if the class exists if the path specified in our code to access it is incorrect the JVM wont find it
Conflicting Jars -> In rare cases if we have multiple jar files with the same class name but different implementations the jvm might pick the wrong one
3Was ist class path?it is a directory structure that the java virtual machine searches for classes and libraries when running our program
4ClassCastExceptionCause: Cast an object to a type its not actually an instance of
5NullPointerExceptionnulll reference is used in a piece of code that expects a non null value