Refer My Notes

As the name suggest ClassNotFoundException is of Exception type and the NoClassDefFoundError is a type of Error. ClassNotFoundException can be handled inside code while NoClassDefFoundError can't. ClassNotFoundException and NoClassDefFoundError occur when the particular required class is not found during run-time. It occurs in different scenarios. 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. but not available during run time. For example, you might have come across this exception when you would have tried to connect to MySQL or Oracle databases and you have not updated the classpath with required JAR files. Most of the time, this exception occurs when you try to run an application without updating the classpath with required JAR files. For example, the below program will throw ClassN...