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3. Look at the following code. Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Line 11 public class ClassA { } public class ClassB extends ClassA { } Line 12 Line 13 { Line 14 public class classC extends ClassA Line 15 Line 16 Line 17 } public ClassA() { public int method1(int a){} public int method2(int b){} public ClassB(){} public int method2(double c){} Assume the classes ClassA, ClassB, ClassC are defined similar to the above. If the reference variables var1, var2, var3, and var4 are declared as: A. var3 = var1; B. var2 = var3; public ClassC(){ public int method1(int b){} public int method2(double c){} ClassA var1 = new ClassA(); ClassC var3 = new ClassC(); ClassB var2 = new ClassB(); ClassB var4 = new ClassB(); Which of the following lines is indicative of polymorphism in Java? C. var1 = var3; D. var4 = var1:

3. Look at the following code. Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Line 11 public class ClassA { } public class ClassB extends ClassA { } Line 12 Line 13 { Line 14 public class classC extends ClassA Line 15 Line 16 Line 17 } public ClassA() { public int method1(int a){} public int method2(int b){} public ClassB(){} public int method2(double c){} Assume the classes ClassA, ClassB, ClassC are defined similar to the above. If the reference variables var1, var2, var3, and var4 are declared as: A. var3 = var1; B. var2 = var3; public ClassC(){ public int method1(int b){} public int method2(double c){} ClassA var1 = new ClassA(); ClassC var3 = new ClassC(); ClassB var2 = new ClassB(); ClassB var4 = new ClassB(); Which of the following lines is indicative of polymorphism in Java? C. var1 = var3; D. var4 = var1:

Computer Networking: A Top-Down Approach (7th Edition)
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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3. Look at the following code. Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Line 11 Line 12 Line 13 Line 14 public class ClassA { } = public class ClassB extends ClassA { } public ClassA() { public int method1(int a){} public int method2(int b){} Line 15 Line 16 Line 17 } public ClassB(+ public int method2(double c){ public class classC extends ClassA { public ClassC(+ public int method1(int b){} public int method2(double c){ Assume the classes ClassA, ClassB, ClassC are defined similar to the above. If the reference variables var1, var2, var3, and var4 are declared as: ClassA var1 = new ClassA(); ClassC var3 = new ClassC(); ClassB var2 = new ClassB(): ClassB var4 = new ClassB(): Which of the following lines is indicative of polymorphism in Java? A. var3 = var1; B. var2 = var3; C. var1 = var3; D. var4 var1;
Transcribed Image Text:3. Look at the following code. Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Line 11 Line 12 Line 13 Line 14 public class ClassA { } = public class ClassB extends ClassA { } public ClassA() { public int method1(int a){} public int method2(int b){} Line 15 Line 16 Line 17 } public ClassB(+ public int method2(double c){ public class classC extends ClassA { public ClassC(+ public int method1(int b){} public int method2(double c){ Assume the classes ClassA, ClassB, ClassC are defined similar to the above. If the reference variables var1, var2, var3, and var4 are declared as: ClassA var1 = new ClassA(); ClassC var3 = new ClassC(); ClassB var2 = new ClassB(): ClassB var4 = new ClassB(): Which of the following lines is indicative of polymorphism in Java? A. var3 = var1; B. var2 = var3; C. var1 = var3; D. var4 var1;
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