basic-python/AbstractTriangle.java at master · Madmaxcoder2612/basic-python · GitHub

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importjava.util.Scanner;
publicabstractclassGeometricObject {
privateStringcolor = "white";
privatebooleanfilled;


protectedGeometricObject(Stringcolor, booleanfilled) {

this.color = color;
this.filled = filled;
 }


publicStringgetColor() {
returncolor;
 }

publicvoidsetColor(Stringcolor) {
this.color = color;
 }


publicbooleanisFilled() {
returnfilled;
 }


publicvoidsetFilled(booleanfilled) {
this.filled = filled;
 }


voiddisplay()
{
System.out.println( "\ncolor: " + color + " and filled: " + filled);
 }


publicabstractdoublegetArea();
publicabstractdoublegetPerimeter();
}

classTriangleextendsGeometricObject
{
doubleside1;
doubleside2;
doubleside3;

Triangle()
{
side1 = 1.0;
side2 = 1.0;
side3 = 1.0;
}
Triangle(doubleside1,doubleside2,doubleside3)
{
this.side1=side1;
this.side2=side2;
this.side3=side3;
}

Triangle(doubleside1,doubles2,doubleside3,Stringcolor,booleanfilled)
{
this(side1,side2,side3);//constructor chaining
setColor(color);
setFilled(filled);
}

publicvoidgetArea() //overriding abstract method
{
doubles = (side1 + side2 + side3) / 2;
doublea= Math.sqrt(s * (s - side1) * (s - side2) * (s - side3));
System.out.println("Area="+a);
 }


publicvoidgetPerimeter()//overriding abstract method
 {
doublep= side1 + side2 + side3;
System.out.println("Perimeter="+p);
 }


publicvoiddisplay()
 {
System.out.println( "Triangle: side1 = " + side1 + " side2 = " + side2 +" side3 = " + side3);
super.display();
}
}

classPracticeProgram5
{
publicstaticvoidmain(String...s)
{

Scannerin=newScanner(System.in);
System.out.println("Enter the three sides of triangle");

doubleside1=input.nextDouble();
doubleside2=input.nextDouble();
doubleside3=input.nextDouble();

System.out.println("Enter the color");
Stringcolor=input.nextLine();

System.out.println("is triangle filled or not");
booleanfilled=input.nextBoolean();

Trianglet=newTriangle(side1,side2,side3,color,filled);
t.display();
}

}