1. a class Rodent has two subclasses Rat and Mouse. Rodent has the public method "squeak" and Rat has the public method "hiss." Which of the following statements will cause a compiler error? A. Rat rat = new Mouse(); B. new Rodent().hiss(); C. new Mouse().squeak(); D. A and B but not c will compiler errors E. A, B and C will cause compiler errors
1. a class Rodent has two subclasses Rat and Mouse. Rodent has the public method "squeak" and Rat has the public method "hiss." Which of the following statements will cause a compiler error? A. Rat rat = new Mouse(); B. new Rodent().hiss(); C. new Mouse().squeak(); D. A and B but not c will compiler errors E. A, B and C will cause compiler errors
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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1. a class Rodent has two subclasses Rat and Mouse. Rodent has the public method "squeak" and Rat has the public method "hiss." Which of the following statements will cause a compiler error?
A. Rat rat = new Mouse();
B. new Rodent().hiss();
C. new Mouse().squeak();
D. A and B but not c will compiler errors
E. A, B and C will cause compiler errors
2. The Java Graphics class is _______ with subclasses specified for _______
A. abstract; different font sets
B. abstract; different hardware profiles
C. non-abstract; different font sets
D. non-abstract; different hardware profiles
E. non-abstract; transparency and shadowing
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