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Java Beans Interview Questions and Answers

Ques. Why do I get a NullPointerException when loading a JAR file into the BeanBox?
Ans. Usually this is because of a mistake in the JAR file being loaded. In the meantime, typical errors include:

► The MANIFEST file uses classes using the wrong file separator ("/" should be used in all platforms).
► The MANIFEST file refers to classes in a package but the actual .class files are not really in that package.
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