In JAVA please Using as reference the design model below, write the java code fo

Question

In JAVA please

Using as reference the design model below, write the java code for the implementation of the classes Point2D and Point3D Point2D x:float -0.0f y:float 0.0f +Point2D(x:float,y:float) +Point2D() +getx():float +setX(x:float) void tgety():float +setY(y:float) void setx(x:float,y:float): void +getXY):float[2] +toStrine):Strine"(x,y) Array of (x,yj extends Point3D z:float 0.0f +Point3D(x:float,y:float,z:float) +Point3D) tgetZ):float +setZ(z: flaot) void +setXYZ(x:float,y:flaot,z:float):voidArray of tx,y,z) +getXYZ():float[3] +toString ():String Concepts in practice: Classes and objects, Inheritance, UML.

Explanation / Answer

import java.util.*;

//Class Point2D definition.

class Point2D{

private

float x;

float y;

public

//Parametrised constructor

Point2D(float x,float y){

this.x = x;

this.y = y;

}

//Default constructor

Point2D(){

this.x=0.0f;

this.y=0.0f;

}

//getter function to get x

float getX(){

return this.x;

}

//setter function to set x

void setX(float x){

this.x = x;

}

//getter function to get y

float getY(){

return this.y;

}

//setter function to set y

void setY(float y){

this.y = y;

}

//getter function to get value of x and y

float[] getXY(){

float arr[] = new float[2];

arr[0]=this.x;

arr[1]=this.y;

return arr;

}

//setter function to set value of x and y

void setXY(float x,float y){

this.x = x;

this.y = y;

}

@Override

public String toString(){

String str1,str2;

str1 = Float.toString(getX());

str2 = Float.toString(getY());

return str1+" "+str2;

}

}

//Derived class definition

class Point3D extends Point2D{

private

float z;

public

//Parametrised constructor

Point3D(float x,float y,float z){

setXY(x,y);

this.z = z;

}

//Default constructor

Point3D(){

setXY(0.0f,0.0f);

this.z = 0.0f;

}

//getter function to get value of z

float getZ(){

return this.z;

}

//setter function to set value of z

void setZ(float z){

this.z = z;

}

//getter function to get value of x,y and z

float[] getXYZ(){

float arr[] = new float[3];

arr[0]=getX();

arr[1]=getY();

arr[2]=this.z;

return arr;

}

//setter function to get value of x,y and z

void setXYZ(float x,float y,float z){

setXY(x,y);

this.z = z;

}

@Override

public String toString(){

String str1,str2,str3;

str1 = Float.toString(getX());

str2 = Float.toString(getY());

str3 = Float.toString(getZ());

return str1+" "+str2+" "+str3;

}

}

//Tester class

public class Main

{

public static void main(String[] args) {

Point2D p2 = new Point2D(2.0f,3.5f);

Point3D p3 = new Point3D(-1.0f,2.9f,4.3f);

System.out.println("x = "+p2.getX()+" y = "+p2.getY());

System.out.println("x = "+p3.getX()+" y = "+p3.getY()+" z = "+p3.getZ());

p2.setXY(20.0f,30.5f);

p3.setXYZ(-10.0f,20.9f,40.3f);

System.out.println(p2.toString());

System.out.println(p3.toString());

}

}

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