type can hold/assume any object of its sub

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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JAVA PROGRAMMING (TRUE OR FALSE)

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  1. Classes in the java·lang package may be used directly if they are imported first using an import statement(True/False)
  2. The fields and methods of a child/sub class are only those inherited from the parent/super class.(True/False)
  3. A reference/object of super class type can hold/assume any object of its sub class type.(True/False)
  4. An import statement is necessary to use/access a classin the same package.(True/False)
  5. A private data field is accessible only by other classes via the exposed methods of its class.(True/False)
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