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Building Java Programs 3rd Edition Exercise Answers

Building Java Programs, 3rd Edition. NOTE: Use the user name and password you were given in class. Exercise 2.2: loopSquares: 20. Java exercises here are indented to provide you the opportunity to practice the Java programming language concepts. You will start from basic Java exercises to more complex exercises. The solution is provided for each exercise. You should try to solve each problem by yourself first before checking the solution. Avoid phishing: Practice-It will never ask you to reply to any email with any personal information such as your account name or password. We will also never ask you to disclose any financial information such as bank or credit card numbers. How is Chegg Study better than a printed Building Java Programs 4th Edition student solution manual from the bookstore? Our interactive player makes it easy to find solutions to Building Java Programs 4th Edition problems you're working on - just go to the chapter for your book.

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  1. Building Java Programs Answer Key
  2. Building Java Programs 3rd Edition Exercise Answers For Beginners
  3. Building Java Programs 3rd Edition Exercise Answers Free
  4. Building Java Programs 3rd Edition Exercise Solutions
  5. Building Java Programs 3rd Edition Exercise Answers For Kids
  6. Building Java Programs 3rd Edition Exercise Answers Pdf
  7. Building Java Programs 3rd Edition Exercise Answers Key

BJP4 Exercise 18.14: toStringHeapIntPriorityQueue BJP4 Exercise 18.15: mergeHeapIntPriorityQueue Building Java Programs, 3rd edition (617) These problems are copyright Pearson Education. Practice-It is not officially associated with this textbook nor with Pearson. Chapter 1 Building Java Programs AP Computer Science A. Based on Chapter 1 of 'Building Java Programs', Third Edition. Top 10 Job Interview Questions & Answers (for 1st & 2nd Interviews). Building Java Programs, 4th edition - Chapter 2 Self-Check Solutions Raw. Rewrite the following code from the previous exercise to be shorter, by declaring the.

Building Java Programs, 4th edition - Chapter 2 Self-Check Solutions
2.10: Oops2-errors
The following program contains 9 errors. Correct the errors and submit a working version of the program. The corrected version of the program should produce the following output:
x is 0
x is now 15
x and y are 15 and 16
// FIND ERRORS
public class Oops2 {
public static void main(String[] args) {
int x;
System.out.println('x is ' x);
int x = 15.2; // set x to 15.2
System.out.println('x is now + x');
int y; // set y to 1 more than x
y = int x + 1;
System.out.println('x and y are ' + x + and + y);
}
}
// Solution
public class Oops2 {
public static void main(String[] args) {
int x = 0;
System.out.println('x is ' + x);
x = 15; // set x to 15
System.out.println('x is now ' + x);
int y = 0; // set y to 1 more than x
y = x + 1;
System.out.println('x and y are ' + x + ' and ' + y);
}
}
2.11: digitExpressions
Suppose you have an int variable called number. What Java expression produces the second-to-last digit of the number (the 10s place)?
What expression produces the third-to-last digit of the number (the 100s place)?
number / 10 % 10
number / 100 % 10
2.12: valueOfX
What is the value of variable x after the following code executes?
int x = 3;
x = x + 2;
x = x + x;
A:
10
2.13: valuesOfABC
What are the values of a, b, and c after the following code statements?
int a = 5;
int b = 10;
int c = b;
a = a + 1;
b = b - 1;
c = c + a;
A;
a = 6
b = 9
c = 16
2.14: firstSecond
What are the values of first and second at the end of the following code?
int first = 8;
int second = 19;
first = first + second;
second = first - second;
first = first - second;
A:
first = 19
second = 8
2.15: firstSecond2
Third
Rewrite the following code from the previous exercise to be shorter, by declaring the variables together on the same line,
and by using the special assignment operators (e.g., +=, -=, *=, and /=) as appropriate.
int first = 8;
int second = 19;
first = first + second;
second = first - second;
first = first - second;
A:
int first = 8, second = 19;
first += second;
second = first - second;
first -= second;
2.16: valuesOfIJK

Building Java Programs Answer Key

What are the values of i, j, and k after the following code statements?
int i = 2;
int j = 3;
int k = 4;
int x = i + j + k;
i = x - i - j;
j = x - j - k;
k = x - i - k;
A:
i = 4
j = 2
k = 1

Building Java Programs 3rd Edition Exercise Answers For Beginners

2.17: maxMin
int max;
int min = 10;
max = 17 - 4 / 10;
max = max + 6;
min = max - min;
System.out.println(max * 2);
System.out.println(max + min);
System.out.println(max);
System.out.println(min);
A:
46
36
23
13
2.19: ComputePay
The following program redundantly repeats the same expressions many times.
Modify the program to remove all redundant expressions using variables of appropriate types.
public class ComputePay {
public static void main(String[] args) {
// Calculate pay at work based on hours worked each day
System.out.println('My total hours worked:');
System.out.println(4 + 5 + 8 + 4);
System.out.println('My hourly salary:');
System.out.println('$8.75');
System.out.println('My total pay:');
System.out.println((4 + 5 + 8 + 4) * 8.75);
System.out.println('My taxes owed:'); // 20% tax
System.out.println((4 + 5 + 8 + 4) * 8.75 * 0.20);
}
}
public class ComputePay {
public static void main(String[] args) {
// Calculate pay at work based on hours worked each day
int totalHours = 4 + 5 + 8 + 4;
double hourlyPay = 8.75;
double totalPay = (totalHours) * hourlyPay;
double taxesOwed = (totalHours) * hourlyPay * 0.20;
System.out.println('My total hours worked:');
System.out.println(totalHours);
System.out.println('My hourly salary:');
System.out.println('$' + hourlyPay);
System.out.println('My total pay:');
System.out.println(totalPay);
System.out.println('My taxes owed:'); // 20% tax
System.out.println(taxesOwed);
}
}
2.1: legalIntLiterals
Which of the following are legal int literals?
22
5.
2.3
10.0
1.5
'7'
-6875309
-1
A:
22
-6875309
-1
2.20: Receipt
The following program redundantly repeats the same expressions many times.
Modify the program to remove all redundant expressions using variables of appropriate types.
// This program computes the total amount owed for a meal,
// assuming 8% tax and a 15% tip.
public class Receipt {
public static void main(String[] args) {
System.out.println('Subtotal:');
System.out.println(38 + 40 + 30);
System.out.println('Tax:');
System.out.println((38 + 40 + 30) * .08);
System.out.println('Tip:');
System.out.println((38 + 40 + 30) * .15);
System.out.println('Total:');
System.out.println(38 + 40 + 30 +
(38 + 40 + 30) * .08 +
(38 + 40 + 30) * .15);
}
}
public class Receipt {
public static void main(String[] args) {
int subTotal = 38 + 40 + 30;
double taxOnTotal = subTotal * 0.08;
double totalWTip = subTotal * 0.15;
double total = subTotal + taxOnTotal + totalWTip;
System.out.println('Subtotal:');
System.out.println(subTotal);
System.out.println('Tax:');
System.out.println(taxOnTotal);
System.out.println('Tip:');
System.out.println(totalWTip);
System.out.println('Total:');
System.out.println(total);
}
}
2.21: Count2
Complete the following code, replacing the 'FINISH ME' parts with your own code, to produce the following output:
2 times 1 = 2
2 times 2 = 4
2 times 3 = 6
2 times 4 = 8
public class Count2 {
public static void main(String[] args) {
for (int i = 1; i <= 4; i++) {
System.out.println('2 times '+ i + ' = ' + (i * 2));
}
}
}

Building Java Programs 3rd Edition Exercise Answers Free

2.23: completeLoop
Complete the following for loop to produce the following output:
-4
14
32
50
68
86
for (int i = 1; i <= 6; i++) {
System.out.println((i * 18) - 22);
}
2.24: oddStuff
What is the output of the following oddStuff method?
public static void oddStuff() {
int number = 4;
for (int count = 1; count <= number; count++) {
System.out.println(number);
number = number / 2;
}
}
output:
4
2
2.25: numberTotal
What is the output of the following loop?
int total = 25;
for (int number = 1; number <= (total / 2); number++) {
total = total - number;
System.out.println(total + ' ' + number);
}
24 1
22 2
19 3
15 4
10 5
2.26: fingerTrap
What is the output of the following loop?
System.out.println('+----+');
for (int i = 1; i <= 3; i++) {
System.out.println(' /');
System.out.println('/ ');
}
System.out.println('+----+');
+----+
/
/
/
/
/
/
+----+
2.2: evaluatingExpressions
What is the result of the following expression?
1 + 2 * 3 + 7 * 2 % 5
A:
11

Building Java Programs 3rd Edition Exercise Solutions

2.3: expressions1
Trace the evaluation of the following expressions, and give their resulting values.
Make sure to give a value of the appropriate type (such as including a .0 at the end of a double).
2 + 3 * 4 - 6 = 8
14 / 7 * 2 + 30 / 5 + 1 = 11
(12 + 3) / 4 * 2 = 6
(238 % 10 + 3) % 7 = 4
(18 - 7) * (43 % 10) = 33
2 + 19 % 5 - (11 * (5 / 2)) = -16
813 % 100 / 3 + 2.4 = 6.4
26 % 10 % 4 * 3 = 6
22 + 4 * 2 = 30
23 % 8 % 3 = 1
12 - 2 - 3 = 7
6/2 + 7/3 = 5
6 * 7 % 4 = 2
3 * 4 + 2 * 3 = 18
177 % 100 % 10 / 2 = 3
89 % (5 + 5) % 5 = 4
392 / 10 % 10 / 2 = 4
8 * 2 - 7 / 4 = 15
37 % 20 % 3 * 4 = 8
17 % 10 / 4 = 1
2.4: expressions2
Trace the evaluation of the following expressions, and give their resulting values.
Make sure to give a value of the appropriate type (such as including a .0 at the end of a double).
4.0 / 2 * 9 / 2 = 9.0
2.5 * 2 + 8 / 5.0 + 10 / 3 = 9.6
12 / 7 * 4.4 * 2 / 4 = 2.2
4 * 3 / 8 + 2.5 * 2 = 6.0
(5 * 7.0 / 2 - 2.5) / 5 * 2 = 6.0
41 % 7 * 3 / 5 + 5 / 2 * 2.5 = 8.0
10.0 / 2/4 = 1.25
8 / 5 + 13 / 2 / 3.0 = 3.0
(2.5 + 3.5) / 2 = 3.0
9 / 4 * 2.0 - 5/4 = 3.0
9 / 2.0 + 7 / 3 - 3.0 / 2 = 5.0
813 % 100 / 3 + 2.4 = 6.4
27 / 2 / 2.0 * (4.3 + 1.7) - 8 / 3 = 37.0
53 / 5 / (0.6 + 1.4) / 2 + 13 / 2 = 8.5
2 * 3 / 4 * 2 / 4.0 + 4.5 - 1 = 4.0
89 % 10 / 4 * 2.0 / 5 + (1.5 + 1.0 / 2) * 2 = 4.8
2.5: expressions3
Trace the evaluation of the following expressions, and give their resulting values.
Make sure to give a value of the appropriate type (such as including a .0 at the end of a double or quotes around a String).
2 + 2 + 3 + 4 = 11
'2 + 2 ' + 3 + 4 = '2 + 2 34'
2 + ' 2 + 3 ' + 4 = '2 2 + 3 4'
3 + 4 + ' 2 + 2' = '7 2 + 2'
'2 + 2 ' + (3 + 4) = '2 + 2 7'
'(2 + 2) ' + (3 + 4) = '(2 + 2) 7'
'hello 34 ' + 2 * 4 = 'hello 34 8'
2 + '(int) 2.0' + 2 * 2 + 2 = '2(int) 2.042'
4 + 1 + 9 + '.' + (-3 + 10) + 11 / 3 = '14.73'
8 + 6 * -2 + 4 + '0' + (2 + 5) = '007'
1 + 1 + '8 - 2' + (8 - 2) + 1 + 1 = '28 - 2611'
5 + 2 + '(1 + 1)' + 4 + 2 * 3 = '7(1 + 1)46'
'1' + 2 + 3 + '4' + 5 * 6 + '7' + (8 + 9) = '123430717'
2.6: declareRealNumberSyntax
Building java programs 3rd edition exercise answers free
Which of the following choices is the correct syntax for declaring a real number variable named 'grade' and initializing its value to 4.0?
int grade : 4.0;
grade = double 4.0;
double grade = 4.0;
4.0 = grade;
grade = 4;
A:
double grade = 4.0;
2.7: fitnessVariables
Imagine you are writing a personal fitness program that stores the user's age, gender, height (in feet or meters), and weight (to the nearest pound or kilogram). Declare variables with the appropriate names and types to hold this information. Write a complete variable declaration statement with the type, the variable name, and a semicolon.
age
gender
height
weight
int age;
String gender;
double height;
int weight;
2.8: studentVariables
Imagine you are writing a program that stores a student's year (Freshman, Sophomore, Junior, or Senior), the number of courses the student is taking, and his or her GPA on a 4.0 scale. Declare variables with the appropriate names and types to hold this information. Write a complete variable declaration statement with the type, the variable name, and a semicolon.
year
courses taken
GPA
int year;
int courseTaken;
double gpa;
2.9: lastDigitExpression
Suppose you have an int variable called number. What Java expression produces the last digit of the number (the 1s place)?
number % 10

Building Java Programs 3rd Edition Exercise Answers For Kids

gistfile1.txt

Building Java Programs 3rd Edition Exercise Answers Pdf

What is the output of the following loop?
for (int i = 1; i <= 3; i++)
System.out.println('How many lines');
System.out.println('are printed?');
How many lines
How many lines
How many lines
are printed?

Building Java Programs 3rd Edition Exercise Answers Key

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