a)
“abstract” class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather it can be sub classed.
Legal “abstract” class:
- The conditions for a class to be considered as legal abstract class are mentioned below:
- If a class includes abstract methods, then the class must be declared as abstract.
- The abstract method that is declared within the abstract class must be declared without braces and followed by a semicolon.
Example of a Legal “abstract” class:
The example of a legal abstract class is mentioned below:
public abstract class GraphicRectangle {
//declare fields
//declare methods
abstract void drawRectangle();
}
Given code:
//class definition
class A {
//declaration of an abstract method
abstract void unfinished() {
}
//end of class
}
b)
“abstract” class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Legal “abstract” class:
The conditions for a class to be considered as legal abstract class are mentioned below:
- If a class includes abstract methods, then the class must be declared as abstract.
- The abstract method that is declared within the abstract class must be declared without braces and followed by a semicolon.
Example of a Legal “abstract” class:
The example of a legal abstract class is mentioned below:
public abstract class GraphicRectangle {
//declare fields
//declare methods
abstract void drawRectangle();
}
Given code:
//class definition
public class abstract A {
//declaration of an abstract method
abstract void unfinished();
//end of class
}
c)
“abstract” class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Legal “abstract” class:
The conditions for a class to be considered as legal abstract class are mentioned below:
- If a class includes abstract methods, then the class must be declared as abstract.
- The abstract method that is declared within the abstract class must be declared without braces and followed by a semicolon.
Example of a Legal “abstract” class:
The example of a legal abstract class is mentioned below:
public abstract class GraphicRectangle {
//declare fields
//declare methods
abstract void drawRectangle();
}
Given code:
//class definition
class A {
//declaration of an abstract method
abstract void unfinished();
//end of class
}
d)
“abstract” class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Legal “abstract” class:
The conditions for a class to be considered as legal abstract class are mentioned below:
- If a class includes abstract methods, then the class must be declared as abstract.
- The abstract method that is declared within the abstract class must be declared without braces and followed by a semicolon.
Example of a Legal “abstract” class:
The example of a legal abstract class is mentioned below:
public abstract class GraphicRectangle {
//declare fields
//declare methods
abstract void drawRectangle();
}
Given code:
//class definition
abstract class A {
//declaration of a protected method
protected void unfinished();
//end of class
}
e)
“abstract” class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Legal “abstract” class:
The conditions for a class to be considered as legal abstract class are mentioned below:
- If a class includes abstract methods, then the class must be declared as abstract.
- The abstract method that is declared within the abstract class must be declared without braces and followed by a semicolon.
Example of a Legal “abstract” class:
The example of a legal abstract class is mentioned below:
public abstract class GraphicRectangle {
//declare fields
//declare methods
abstract void drawRectangle();
}
Given code:
//class definition
abstract class A {
//declaration of an abstract method
abstract void unfinished();
//end of class
}
f)
“abstract” class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Legal “abstract” class:
The conditions for a class to be considered as legal abstract class are mentioned below:
- If a class includes abstract methods, then the class must be declared as abstract.
- The abstract method that is declared within the abstract class must be declared without braces and followed by a semicolon.
Example of a Legal “abstract” class:
The example of a legal abstract class is mentioned below:
public abstract class GraphicRectangle {
//declare fields
//declare methods
abstract void drawRectangle();
}
Given code:
//class definition
abstract class A {
//declaration of an abstract method
abstract int unfinished();
//end of class
}
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Chapter 13 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)
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- a) Show a possible trace of the OSPF algorithm for computing the routing table in Router 2 forthis network.b) Show the messages used by RIP to compute routing tables.arrow_forwardusing r language to answer question 4 Question 4: Obtain a 95% standard normal bootstrap confidence interval, a 95% basic bootstrap confidence interval, and a percentile confidence interval for the ρb12 in Question 3.arrow_forwardusing r language to answer question 4. Question 4: Obtain a 95% standard normal bootstrap confidence interval, a 95% basic bootstrap confidence interval, and a percentile confidence interval for the ρb12 in Question 3.arrow_forward
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