STARTING OUT W/JAVA PLUS ACCESS >IP<
19th Edition
ISBN: 9780135396094
Author: MUGANDA
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 6, Problem 1FTE
Find the error in the following class:
public class MyClass
{
private int x;
private double y;
public void MyClass(int a, double b)
{
x = a;
y = b;
}
}
Expert Solution & Answer
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Students have asked these similar questions
Consider the following class:
public class theClass
{
private double value;
private string str;
public static int count;
public theClass ()
{
}
public theClass (double d, int, x, String s)
{
}
public void print()
{
}
public static void incrementCount()
{
}
}
a) How many members do class theClass have?
b) Compare the purpose of the two constructors.
c) Use the reference this to write the definition of a method print( )to output the value of the instance data members separated by commas.
d) Write a statement to create an object myClass of the class theClass and initialise the instance variables to 5, 10.75 and the string Class.
e) Write a definition (heading) for a copy constructor for the class.
True or False,
An abstract class must have at least one abstract method.
QUESTION 15
public class numClass {
private int a;
private static int y = 10;
public numClass(int newX)
{a=newx; }
public void set(int newx)
{ a=newx; y+=a; }
public void setY(int newy)
{ y=newY; }
public static int getY()
{ return y; }
}// end of class
public class output {
public static void main(String[] args) {
numClass one = new numClass(10);
numClass two = new numClass (2);
try{
one. sety(30);
two.set(4);
if(one.getY()==30)
throw new Exception ("30");
one.setY(40);
}
catch (Exception e) {
two.sety (50);
}
System.out.println(two.getY());
}// end of main
} // end of class
Chapter 6 Solutions
STARTING OUT W/JAVA PLUS ACCESS >IP<
Ch. 6.1 - What does an object use its fields for?Ch. 6.1 - Prob. 6.2CPCh. 6.1 - How is a class like a blueprint?Ch. 6.1 - You have programs that create Scanner, Random, and...Ch. 6.1 - Prob. 6.5CPCh. 6.1 - What values do reference variables hold?Ch. 6.1 - Prob. 6.7CPCh. 6.2 - You hear someone make the following comment: A...Ch. 6.2 - Prob. 6.9CPCh. 6.2 - When a variable is said to reference an object,...
Ch. 6.2 - Prob. 6.11CPCh. 6.2 - Prob. 6.12CPCh. 6.2 - Prob. 6.13CPCh. 6.2 - Prob. 6.14CPCh. 6.2 - Prob. 6.15CPCh. 6.2 - What is a stale data item?Ch. 6.3 - Assume that r1 and r2 are variables that reference...Ch. 6.4 - How is a constructor named?Ch. 6.4 - What is a constructors return type?Ch. 6.4 - Prob. 6.20CPCh. 6.7 - Prob. 6.21CPCh. 6.7 - What is a methods signature?Ch. 6.7 - Look at the following class: public class...Ch. 6.7 - How many default constructors may a class have?Ch. 6.9 - Prob. 6.25CPCh. 6.9 - When designing an object-oriented application, who...Ch. 6.9 - How do you identify the potential classes in a...Ch. 6.9 - What are a classs responsibilities?Ch. 6.9 - What two questions should you ask to determine a...Ch. 6.9 - Will all of a classs actions always be directly...Ch. 6 - This is a collection of programming statements...Ch. 6 - A class is analogous to a(n) _______. a. house b....Ch. 6 - An object is a(n) ________. a. blueprint b....Ch. 6 - This is a class member that holds data. a. method...Ch. 6 - This key word causes an object to be created in...Ch. 6 - This is a method that gets a value from a classs...Ch. 6 - This is a method that stores a value in a field or...Ch. 6 - When the value of an item is dependent on other...Ch. 6 - This is a method that is automatically called when...Ch. 6 - When a local variable has the same name as a...Ch. 6 - This is automatically provided for a class if you...Ch. 6 - Prob. 12MCCh. 6 - Prob. 13MCCh. 6 - A classs responsibilities are __________. a. the...Ch. 6 - True or False: The new operator creates an...Ch. 6 - True or False: Each instance of a class has its...Ch. 6 - True or False: When you write a constructor for a...Ch. 6 - True or False: A class may not have more than one...Ch. 6 - True or False: To find the classes needed for an...Ch. 6 - Find the error in the following class: public...Ch. 6 - Prob. 2FTECh. 6 - The following statement attempts to create a...Ch. 6 - Find the error in the following class: public...Ch. 6 - Find the error in the following class: public...Ch. 6 - Design a class named Pet, which should have the...Ch. 6 - Look at the following partial class definition,...Ch. 6 - Consider the following class declaration: public...Ch. 6 - Look at the following description of a problem...Ch. 6 - The bank offers the following types of accounts to...Ch. 6 - Assume that you are writing an application that...Ch. 6 - What is the difference between a class and an...Ch. 6 - A contractor uses a blueprint to build a set of...Ch. 6 - What is an accessor method? What is a mutator...Ch. 6 - is it a good idea to make fields private? Why or...Ch. 6 - If a class has a private field, what has access to...Ch. 6 - Prob. 6SACh. 6 - Assume a program named MailList.java is stored in...Ch. 6 - Why are constructors useful for performing...Ch. 6 - Under what circumstances does Java automatically...Ch. 6 - What do you call a constructor that accepts no...Ch. 6 - Prob. 11SACh. 6 - How does method overloading improve the usefulness...Ch. 6 - Employee Class Write a class named Employee that...Ch. 6 - Car Class Write a class named Car that has the...Ch. 6 - Personal Information Class Design a class that...Ch. 6 - Retail Item Class Write a class named RetailItem...Ch. 6 - Payroll Class Design a Payroll class that has...Ch. 6 - TestScores Class Design a TestScores class that...Ch. 6 - Circle Class Write a Circle class that has the...Ch. 6 - Temperature Class Write a Temperature class that...Ch. 6 - Days in a Month Write a class named MonthDays, The...Ch. 6 - A Game of Twenty-One For this assignment, you will...Ch. 6 - Freezing and Boiling Points The following table...Ch. 6 - SavingsAccount Class Design a SavingsAccount class...Ch. 6 - Deposit and Withdrawal Files Use Notepad or...Ch. 6 - Patient Charges Write a class named Patient that...Ch. 6 - Dice Game Write a program that uses the Die class...Ch. 6 - Roulette Wheel Colors On a roulette wheel, the...Ch. 6 - Coin Toss Simulator Write a class named Coin. The...Ch. 6 - Tossing Coins for a Dollar For this assignment you...Ch. 6 - Fishing Game Simulation For this assignment, you...
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