Concept explainers
Videos
Program Plan:
- Include the required import statement.
- Define the main class.
- Define the main method using public static main.
- Declare the input scanner.
- Get the three sides of the triangle from the user.
- Create an object for the “Triangle” class.
- Get the color from the user and call the “setColor” method with the parameter “color”.
- Get the Boolean value for filled the triangle and call the “setFilled” method with the parameter “filled”.
- Display the output.
- Define the main method using public static main.
- Define the “GeometricObject” class.
- Declare the required variables.
- Define the default constructor and constructor for the class.
- Define the accessor and matator.
- The “isFilled” and “setColor” method will return the value to the main class.
- Define the derived class “Triangle” from the “GeometricObject” class.
- Declare the required variables.
- Define the default constructor and constructor for the class.
- Define the accessor.
- The “getArea()” method will calculate the area of triangle and then return the result.
- The “getPerimeter()” method will return the perimeter of the triangle.
- The “toString()” method will return the three sides of the triangle.
The below program is used to display the area, perimeter and sides of the triangle as follows:
Explanation of Solution
Program:
//import statement
import java.util.Scanner;
//class Excersise11_01
public class Exercise11_01
{
// main method
public static void main(String[] args)
{
// declare the scanner variable
Scanner input = new Scanner(System.in);
//get the input from the user
System.out.print("Enter three sides: ");
//declare the variables
double side1 = input.nextDouble();
double side2 = input.nextDouble();
double side3 = input.nextDouble();
//create an object for the "Triangle" class
Triangle triangle = new Triangle(side1, side2, side3);
//get the input from the user
System.out.print("Enter the color: ");
String color = input.next();
//call the "setColor" function
triangle.setColor(color);
//get the input from the user
System.out.print("Enter a boolean value for filled: ");
boolean filled = input.nextBoolean();
//call the "setFilled" function
triangle.setFilled(filled);
//print the output
System.out.println("The area is " + triangle.getArea());
System.out.println("The perimeter is "
+ triangle.getPerimeter());
System.out.println(triangle);
}
}
//definition of class "GeometricObject"
class GeometricObject
{
/* declare the required variables and initialize it */
private String color = "white";
private boolean filled;
private java.util.Date dateCreated;
//definition of default constructor
public GeometricObject()
{
//create an object
dateCreated = new java.util.Date();
}
//definition of constructor
public GeometricObject(String color, boolean filled)
{
//create an object
dateCreated = new java.util.Date();
//set the value
this.color = color;
this.filled = filled;
}
//definition of accessor
public String getColor()
{
//return the color
return color;
}
//definition of mutator
public void setColor (String color)
{
//set the color
this.color = color;
}
//definition of the "isFilled" method
public boolean isFilled()
{
//return the value
return filled;
}
//definition of the "setFilled" method
public void setFilled(boolean filled)
{
//set the value
this.filled = filled;
}
//definition of the "getDateCreated" method
public java.util.Date getDateCreated()
{
//return the value
return dateCreated;
}
//definition of the "toString" method
public String toString()
{
//return the value
return "created on " + dateCreated + "\ncolor: " + color + " and filled: " + filled;
}
}
//definition of derived class "Triangle"
class Triangle extends GeometricObject
{
/* declare the required variables and initialize it */
private double side1 = 1.0, side2 = 1.0, side3 = 1.0;
/*definition of Constructor */
public Triangle()
{
}
/* definition of Constructor */
public Triangle(double side1, double side2, double side3)
{
this.side1 = side1;
this.side2 = side2;
this.side3 = side3;
}
//definition of accessor
public double getSide1()
{
//return the value
return side1;
}
//definition of accessor
public double getSide2()
{
//return the value
return side2;
}
//definition of accessor
public double getSide3()
{
//return the value
return side3;
}
/*override method of "getArea" in GeometricObject */
public double getArea()
{
//declare and calculate the value
double s = (side1 + side2 + side3) / 2;
//return the value
return Math.sqrt(s * (s - side1) * (s - side2) * (s - side3));
}
/*override method of "getPerimeter" in GeometricObject */
public double getPerimeter()
{
//return the value
return side1 + side2 + side3;
}
//definition of "toString" method
public String toString()
{
// return the three sides
return "Triangle: side1 = " + side1 + " side2 = " + side2 +" side3 = " + side3;
}
}
UML diagram:
Explanation:
The above UML diagram the “GeometricObject” is a parent class which contains “color”, “filled”, “dateCreated” variables and “GeometricObject()”, “GeometricObject(String color, boolean filled)”, “getColor()”, “getColor(String color)”, “isFilled()”, “setFilled(boolean filled)”, “getDateCreated()” and “toString()” methods.
The “Triangle” is the child class extended from “GeometricObject” class it contains “side1”, “side2” and “side3” variables and “Triangle()”, “Triangle(double side1, double side2, double side3)”, “getSide1()”, “getSide2()”, “getSide3()”, “getArea()”, “getPerimeter()” and “toString()” methods.
Enter three sides: 2
3
4
Enter the color: black
Enter a boolean value for filled: true
The area is 2.9047375096555625
The perimeter is 9.0
Triangle: side1 = 2.0 side2 = 3.0 side3 = 4.0
Want to see more full solutions like this?
Chapter 11 Solutions
Instructor Solutions Manual For Introduction To Java Programming And Data Structures, Comprehensive Version, 11th Edition
Additional Engineering Textbook Solutions
Database Concepts (8th Edition)
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Starting Out with C++ from Control Structures to Objects (9th Edition)
Elementary Surveying: An Introduction To Geomatics (15th Edition)
Starting Out with Python (4th Edition)
Introduction To Programming Using Visual Basic (11th Edition)
- 2) Assume a local area network has four host computers (h1, h2, h3 & h4) and they are connected to the internet through a NAT router (s1). The host computers use private IP address space: 192.168.2/24. Each host is trying to establish 2 TCP connections to a remote webserver through the NAT router. The IP address of the webserver is: 130.12.11.9. Now do the following: 1 a. Assign IP addresses to the interfaces of the hosts and the router. For the router, assign arbitrary addresses. List these addresses. b. Now create a NAT translation table as taught in the class for all TCP connections. Assign arbitrary port numbers as required.arrow_forward1) Consider the following network. Host h6 10.3.0.6 Host h5 10.3.0.5 Host h1 10.1.0.1 OpenFlow controller m 2 3 4 Host h4 10.2.0.4 Host h2 10.1.0.2 Host h3 10.2.0.3 The desired forwarding behavior for the datagrams arriving at s2 is as follows: a) any datagrams arriving on input port 1 from hosts h5 or h6 that are destined to hosts h1 or h2 should be forwarded over output port 2; b) any datagrams arriving on input port 2 from hosts h1 or h2 that are destined to hosts h5 or h6 should be forwarded over output port 1; c) any arriving datagrams on input ports 1 or 2 and destined to hosts h3 or h4 should be delivered to the host specified; d) hosts h3 and h4 should be able to send datagrams to each other. Create a flow table for s2 that implement these forwarding behaviors. Your table should have 2 columns one for match and the other for actions, as taught in the class.arrow_forwardBased on the last digit of your Kean ID: Create an LC-3 program that compares 3 personally assigned to you numbers stored in memory and finds the maximum of them. Compile and run on https://wchargin.com/lc3web/. Screenshot and explain your result. ID 0 A 7 B с -3 12 1 0 5 -1 Expected max 12 5 2 -8 -2 6 9 My Kean ID: 1233321 3 14 3 6 14 4 -5 -6 -1 -1 сл 5 10 0 4 10 6 2 11 1 11 7 -9 7 -4 7 8 00 66 00 8 5 13 13 9 -2 3 0 3arrow_forward
- 8 9 See the program below that we worked on in class and that multiplies A=4 by B=5, the result 20 is stored in a particular register: Address 15 14 པPy"BI" ༦ དད་པས་ས་་ 12 11 11 10 9 8 7 6 109876543210 13 12 x3000 0 0 0 0 0 1000 000110 x3001 0 0 1 0 0 1 0000 000110 x3002 0 1 0 1 0 1 101 1 100000 x3003 0 0 0 1 0 1 x3004 0 0 0 1 0 101 1 000001 10010 111111 x3005 0 0 0 0 1 01 1 11 1 1 1 1 0 1 x3006 1 1 1 1 0 00000100101 x3007 0 0 0 0 0 00000000101 x3008 0 00 00 0 0000 0000100 Based on the last digit of your Kean ID, you need to modify it to multiply the personally assigned A and B to you and store the result exactly in the register assigned. Write a program in machine language (in binary) so it looks similar to the above. 3 4 ID 0 A 3 B Result Register 6 R4 1 4 7 R5 2 7 3 R6 My Kean ID: 1233321 2 2 00 8 6 5 9 1 6 R7 33 34 R4 6 0 7 R5 55 7 5 5 R6 6 1 12 R7 RR 7 R3 Trace the program/loop step by step and provide the result of your tracing. SHOW ALL YOUR WORK.arrow_forwardYou are tasked with developing a portable system that can be worn to collect health and fitness data. The challenge is to integrate all functions into the smaller form of an ear clip. The device should include heart rate, movement and temperature sensor and wireless communication with a mobile app. Draw a diagram- hardware architecture of the system- including the selection of suitable sensors, communication modules, and an energy-efficient microcontroller. (visualize the components and their connections)arrow_forwardDraw out an example of 3 systems using Lamport’s logical clock and explain the steps in words.arrow_forward
- “Systems have become very powerful and sophisticated, providing quality information fordecisions that enable the firm to coordinate both internally and externally.”With reference to the above statement compare the operations of any three data gatheringsystems today’s organisations use to aid decision making.arrow_forwardlabmas Course Home XDocument courses/13810469/menu/a2c41aca-b4d9-4809-ac2e-eef29897ce04 There are three ionizable groups (weak acids and/or bases) in glutamic acid. Label them on the structure below Drag the appropriate labels to their respective targets. OOH [] CH³N CH CH2 CH2 IC HO Reset Helparrow_forwardPython - Need help! How do I have an input in turtle to display my name below the circle it draws and another input to display my age written below that? Code: import turtlebackground = "#FFFFFF" def draw_circle(radius, line_color, fill_color): my_turtle.color(line_color) my_turtle.fillcolor(fill_color) my_turtle.begin_fill() my_turtle.circle(radius) my_turtle.end_fill() def move_turtle(x, y): my_turtle.penup() my_turtle.goto(x, y) my_turtle.pendown() turtle.done()arrow_forward
- Need help fixing my python code! Images attached on the required modficications I dont know how to do. Simpler the better.Code: (in images)arrow_forwardAnswer all of the questions with steps by step explanation to every question.arrow_forwardW Go Tools Window Help mac283_quiz3_fall2025.pdf Page 2 of 2 @ Q Q Û • ¨ ® - Qy Search X 00 01 11 10 0 1 1 1 0 1 1 1 1 1 A ABC 88% Problem 3. Draw the combinational circuit that directly implements the Boolean expression: F(x, y, z) = xyz + (y²+z) Problem 4. Find the truth table that describes the following circuit. y- z - X Problem 5. a) Describe how a decoder works and indicate typical inputs and outputs. b) How many inputs does a decoder have if it has 64 outputs? NOV 6 M tv♫ zoomarrow_forward
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr