Absolute Java (6th Edition)
6th Edition
ISBN: 9780134041674
Author: Walter Savitch, Kenrick Mock
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 15STE
Something could go wrong with the following code. Identify and fix the problem.
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there are 2 errors in this code can you fix it for me?
public class Exercise09_10 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter a, b, c: ");
double a = input.nextDouble();
double b = input.nextDouble();
double c = input.nextDouble();
QuadraticEquation equation = new QuadraticEquation(a, b, c);
double discriminant = equation.getDiscriminant();
if (discriminant < 0) {
System.out.println("The equation has no roots");
}
else if (discriminant == 0)
{
System.out.println("The root is " + equation.getRoot1());
}
else // (discriminant >= 0)
{
System.out.println("The roots are " + equation.getRoot1()
+ " and " + equation.getRoot2());
}
}
}
Hi, I am struggling a bit with this problem. (This is in Java by the way.)
Provided code:
import java.util.Scanner;
public class LabProgram { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String userText; // Add more variables as needed userText = scnr.nextLine(); // Gets entire line, including spaces.
/* Type your code here. */ }}
Can somebody explain to me why the output isn't showing how many questions the user got right or wrong? I know the fun facts are all the same at the moment. Just can't figure out the part where it won't output the amount of correct answers.
import java.util.Scanner;
public class AssignmentAttempt {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println("Welcome to Tamriel!");
System.out.println("What is your name traveler?:");
String entrdname = scan.nextLine();
System.out.println(entrdname);
System.out.println("Huh... not exactly what I imagined it would be.");
System.out.print("Regardless, thank you for the information, ");
System.out.print(entrdname);System.out.println(".");
System.out.println(" To make sure that you are stable enough to continue your journeys without further assistance, I will give you a short quiz.");
String answer1 = "";
String answer2 = "";
String answer3 = "";
String answer4 = "";
String answer5 =…
Chapter 2 Solutions
Absolute Java (6th Edition)
Ch. 2 - Prob. 1STECh. 2 - Write Java statements that will cause the...Ch. 2 - What is the difference between System.out.println...Ch. 2 - Prob. 4STECh. 2 - What output is produced by the following code?
Ch. 2 - What output is produced by the following code? For...Ch. 2 - Write a Java statement to output the value in...Ch. 2 - What output is produced by the following code?...Ch. 2 - Suppose the class Robot is a part of the standard...Ch. 2 - Write an import statement that makes the Scanner...
Ch. 2 - Prob. 11STECh. 2 - Write a line of code that uses the object frank...Ch. 2 - Write a complete Java program that reads in a line...Ch. 2 - Write a complete Java program that reads in a line...Ch. 2 - Something could go wrong with the following code....Ch. 2 - Suppose your code creates an object of the class...Ch. 2 - Continue with the object keyboard from Self-Test...Ch. 2 - Prob. 18STECh. 2 - What is missing from the following code, which...Ch. 2 - The Babylonian algorithm to compute the square...Ch. 2 - (This is a version with input of an exercise from...Ch. 2 - Write a program that reads in two numbers typed on...Ch. 2 - John travels a distance of 55 miles at an average...Ch. 2 - Grade point average (GPA) in a 4-point scale is...Ch. 2 - (This is a better version of an exercise from...Ch. 2 - Write a program that determines the change to be...Ch. 2 - Write a program that reads in a string containing...Ch. 2 - (This is a better version of an exercise from...Ch. 2 - Write a program that inputs the name, quantity,...Ch. 2 - Write a program that calculates the total grade...Ch. 2 - (This is a variant of an exercise from Chapter 1.)...Ch. 2 - (This is an extension of an exercise from Chapter...Ch. 2 - From Programming Project 10 in Chapter 1,...
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