Core Java Interview Questions 1 What is the difference between an Abstract class and Interface?



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core java interview ques

93) What is an abstract method?
An abstract method is a method whose implementation is deferred to a subclass.
94) How are Java source code files named?
A Java source code file takes the name of a public class or interface that is defined within
the file. A source code file may contain at most one public class or interface. If a public class
or interface is defined within a source code file, then the source code file must take the
name of the public class or interface. If no public class or interface is defined within a source
code file, then the file must take on a name that is different than its classes and interfaces.
Source code files use the .java extension.

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