Welcome to the Triangles program
Enter length 1: 3
Enter length 2: 5
Enter length 3: 5
Enter the base: 5
Enter the height: 8
---------------------
The triangle is Isosceles since it has two equal length
sides.
Isosceles triangle also has two equal angles
The area is: 20
The permimeter is: 13
Continue? (y/n): y
Enter length 1: 10
Enter length 2: 10
Enter length 3: 10
Enter the base: 10
Enter the height: 7
---------------------
The triangle is Equilateral since it has equal
length on all three sides.
All Equilateral triangle are equiangular triangles.
The area is: 35
The permimeter is: 30
Continue? (y/n): y
Enter length 1: 10
Enter length 2: 3
Enter length 3: 9
Enter the base: 10
Enter the height: 7
---------------------
The triangle is Scalene with all no equal side.
Scalene triangles have no equal angles.
The area is: 35
The permimeter is: 22
Continue? (y/n): n
Goodbye.
------------------------------------------------
Requirements:
DBPM Template
**DBPM TEMPLATE **
package triangles;
import java.util.Scanner;
public class Triangles
{
private double area;
private double permimeter;
//CREATE A DEFAULT CONSTRUCTOR TO INITIALIZE area and
permimeter
//CREATE THE TWO SETTER METHODS FOR area and permimeter
//CREATE THE TWO GETTER METHODS FOR area and permimeter
public void triangleType(double side1, double side2, double
side3)
{
if (side1 == side2 && side1 == side3) {
System.out.println("The triangle is Equilateral since it has equal
length on all three sides.");
System.out.println("All Equilateral triangle are equiangular
triangles.");
} else {
if (side1 == side2 && side1 != side3 || side1 != side2
&& side2 == side3 || side1 == side3 && side1 !=
side2) {
System.out.println("The triangle is Isosceles since it has two
equal length sides.");
System.out.println("Isosceles triangle also has two equal
angles");
} else {
if (side1 != side2 && side1 != side3) {
System.out.println("The triangle is Scalene with all no equal
side.");
System.out.println("Scalene triangles have no equal
angles.");
}
}
}
}
//WRITE THE AREA METHOD WITH TWO DOUBLE PARAMETERS WITH A VOID
RETURN TYPE
{
// CALCULATE THE AREA (this.area)
System.out.println(this.area);
}
//WRITE THE PERMIMETER METHOD WITH THREE DOUBLE PARAMETERS WITH A
VOID RETURN TYPE
{
// CALCULATE THE PERMIMETER (this.permimeter)
System.out.println(this.permimeter);
}
public static void main(String[] args)
{
System.out.println("Welcome to the triangles program");
Scanner key = new Scanner(System.in);
int x = 1;
String y = "y";
//CREATE A TRIANGLES OBJECT CALLED triangleObj
do {
try {
while ("y".equalsIgnoreCase(y)) {
x = 1;
System.out.print("Enter length 1: ");
double side1 = key.nextDouble();
System.out.print("Enter length 2: ");
double side2 = key.nextDouble();
System.out.print("Enter length 3: ");
double side3 = key.nextDouble();
System.out.println(" ");
System.out.print("Enter the Base: ");
double base = key.nextDouble();
System.out.print("Enter the Height: ");
double height = key.nextDouble();
System.out.println(" ");
System.out.println("---------------------");
System.out.println(" ");
triangleObj.triangleType(side1, side2, side3);
triangleObj.area(base, height);
triangleObj.permimeter(side1, side2, side3);
x = 2;
System.out.print("Continue? Y/N: ");
y = key.nextLine();
y = key.nextLine();
}
}
//CREATE THE CATCH CLAUSE WITH Exception e
{
System.out.println("Please enter a valid number.");
key.next();
}
} while (x == 1);
}
}
Note: Done accordingly. Please comment for any further help. Please give thumbs up.
Code:
import java.util.Scanner;
public class Triangles {
private double area;
private double perimeter;
// CREATE A DEFAULT CONSTRUCTOR TO INITIALIZE area and
permimeter
Triangles() {
this.area = 0;
this.perimeter = 0;
}
// CREATE THE TWO SETTER METHODS FOR area and permimeter
void setArea(double area) {
this.area = area;
}
void setPerimeter(double perimeter) {
this.perimeter = perimeter;
}
// CREATE THE TWO GETTER METHODS FOR area and permimeter
double getPerimeter() {
return this.perimeter;
}
double getArea() {
return this.area;
}
public void triangleType(double side1, double side2, double
side3) {
if (side1 == side2 && side1 == side3) {
System.out.println("The triangle is Equilateral since it has equal
length on all three sides.");
System.out.println("All Equilateral triangle are equiangular
triangles.");
} else {
if (side1 == side2 && side1 != side3 || side1 != side2
&& side2 == side3 ||
side1 == side3 && side1 != side2) {
System.out.println("The triangle is Isosceles since it has two
equal length sides.");
System.out.println("Isosceles triangle also has two equal
angles");
} else {
if (side1 != side2 && side1 != side3) {
System.out.println("The triangle is Scalene with all no equal
side.");
System.out.println("Scalene triangles have no equal
angles.");
}
}
}
}
// WRITE THE AREA METHOD WITH TWO DOUBLE PARAMETERS WITH A VOID
RETURN TYPE
void area(double base, double height) {
this.area = (1 / 2.0) * base * height;
}
// WRITE THE PERMIMETER METHOD WITH THREE DOUBLE PARAMETERS WITH
A VOID
// RETURN TYPE
void perimeter(double side1, double side2, double side3) {
this.perimeter = side1 + side2 + side3;
}
public static void main(String[] args) {
System.out.println("Welcome to the triangles program");
Scanner key = new Scanner(System.in);
int x = 1;
String y = "y";
//CREATE A TRIANGLES OBJECT CALLED triangleObj
while ("Y".equalsIgnoreCase(y)) {
Triangles triangleObj = new Triangles();
try {
System.out.print("Enter length 1: ");
double side1 = key.nextDouble();
System.out.print("Enter length 2: ");
double side2 = key.nextDouble();
System.out.print("Enter length 3: ");
double side3 = key.nextDouble();
System.out.println(" ");
System.out.print("Enter the Base: ");
double base = key.nextDouble();
System.out.print("Enter the Height: ");
double height = key.nextDouble();
System.out.println(" ");
System.out.println("---------------------");
System.out.println(" ");
triangleObj.triangleType(side1, side2, side3);
triangleObj.area(base, height);
triangleObj.perimeter(side1, side2, side3);
System.out.println("The area is: "+triangleObj.area);
System.out.println("The perimeter is:
"+triangleObj.perimeter);
System.out.print("Continue? Y/N: ");
key.nextLine();//to clear buffer
y = key.nextLine();
}
//CREATE THE CATCH CLAUSE WITH Exception e
catch (Exception e) {
System.out.println("Please enter a valid number.");
key.nextLine();//to clear buffer
System.out.print("Continue? Y/N: ");
y = key.nextLine();
}
}
System.out.println("Goodbye.");
}
}
Output:
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