Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
11th Edition
ISBN: 9780134743356
Author: Paul J. Deitel, Harvey Deitel
Publisher: PEARSON
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Expert Solution & Answer
Chapter 3, Problem 4.1E
Explanation of Solution
Using Classes without importing them:
- The “String” class provides a number of methods that examines for a string inside of a string.
- The Scanner class helps to create an object for Scanner method for reading the input strings from console and inputs are delimited by whitespace characters.
- The syntax to create an object for Scanner class using System.in is given below:
Scanner objName = new Scanner(System...
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Instructions
Assuming you are registered in a class with several activities/categories (quizzes, labs, homework, attendance, etc.), you would like to keep track of your grades throughout the quarter. For each category, you need to add your grade, e.g., for the labs you got 100 in lab 1, 95 in lab 2, etc.
How are we going to store our grades for each category?
Remember that in our main program, we keep the information for various grade categories. This information is stored as a list of lists, which can, for example, look like this:
[["Lab", 35], ["Quiz", 35]]
Each list that is contained in the main “database” (a list of lists) contains information about a category and its corresponding grade percentage.
If for the labs, you got 100 in lab 1, 95 in lab 2, we can store this information for the “Lab” category as an additional list:
["Lab", 35, [100, 95]]
This means that our database would then look like this (note the nesting of the grades):
[["Lab", 35, [100, 95]], ["Quiz", 35]]
In order…
Discussion: Advantages of Methods
This discussion has 2 parts: What are the advantages of using methods? Name at least 2 advantages and how you benefit from each. List at least 1 scenario you would want to use methods instead of having the code in the main class.
Objectives:
• More practice designing and writing classes
• Use Java loop structures
• More practice rounding numbers
• Write boolean expression(s)
Background
Companies raise money (to be able to do more) by selling shares of stock. You can buy whole shares of stocks. Stocks prices vary over time. If you buy some shares and then sell them when they are higher, you make money :). For
stocks, the cost basis is the amount that you spent purchasing the shares. It is calculated as the sum of the number of shares purchased multiplied by the purchase price (at the time of the purchase). After selling shares, the profit is
the number of shares sold multiplied the current price, then minus the cost basis.
Look at the following examples for illustrations of calculating the profit.
Example 1 - Acme Corporation
Number of Shares Price per Share
5.50
5.15
100
100
100
6.16
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Chapter 3 Solutions
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Ch. 3 - Fill in the blanks in each of the following: Each...Ch. 3 - Fill in the blanks in each of the following:...Ch. 3 - Fill in the blanks in each of the following:...Ch. 3 - Fill in the blanks in each of the following: Each...Ch. 3 - Prob. 1.5SRECh. 3 - Fill in the blanks in each of the following: Java...Ch. 3 - Prob. 1.7SRECh. 3 - Prob. 1.8SRECh. 3 - Prob. 1.9SRECh. 3 - Prob. 1.10SRE
Ch. 3 - Prob. 1.11SRECh. 3 - Prob. 1.12SRECh. 3 - Fill in the blanks in each of the following: A(n)...Ch. 3 - Prob. 1.14SRECh. 3 - Prob. 1.15SRECh. 3 - Prob. 1.16SRECh. 3 - Fill in the blanks in each of the following: Types...Ch. 3 - Prob. 2.1SRECh. 3 - Prob. 2.2SRECh. 3 - State whether each of the following is true or...Ch. 3 - Prob. 2.4SRECh. 3 - Prob. 2.5SRECh. 3 - Prob. 2.6SRECh. 3 - State whether each of the following is true or...Ch. 3 - State whether each of the following is true or...Ch. 3 - Prob. 2.9SRECh. 3 - Prob. 2.10SRECh. 3 - State whether each of the following is true or...Ch. 3 - Prob. 3.1SRECh. 3 - Prob. 4.1SRECh. 3 - (Keyword new) Whats the purpose of keyword new?...Ch. 3 - Prob. 2.1ECh. 3 - (Instance Variables) Explain the purpose of an...Ch. 3 - Prob. 4.1ECh. 3 - (Using a Class without Importing It) Explain how a...Ch. 3 - (set and get Methods) Explain why a class might...Ch. 3 - Prob. 7.1ECh. 3 - (Invoice Class) Create a class called Invoice that...Ch. 3 - (Employee Class) Create a class called Employee...Ch. 3 - Prob. 10.1ECh. 3 - (Target-Heart-Rate Calculator) While exercising,...Ch. 3 - (Computerization of Health Records) A health-care...
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