Interface is a set of abstract methods. A class in Java implements an interface and inherits the abstract methods of the interface. It is not a class. Writing an interface is the same as writing a class. A class tells us about the attributes and behaviors of an object. An interface contains behaviors that a class implements.
Class is a template/blueprint that describes the behavior that an object supports.
Exception is a problem that arises during the execution of a program.
Here is the list of some packages to be used in Java code:
org.apache.hadoop.hbase
: This package contains a base class for HBaseorg.apache.hadoop.hbase.backup
: This package contains classes related to backup tasksorg.apache.hadoop.hbase.client
: This package contains a client-related classorg.apache.hadoop.hbase.codec
: This package contains theCodec
interfaceorg.apache.hadoop.hbase.coprocessor
: This package is used to write coprocessorsorg.apache.hadoop.hbase.exceptions
: This...