Question

Its java class pratice  problem (Geometry: point in a rectangle?)

Write a program that prompts the user to enter a point (x, y) and checks whether the point is within the rectangle centered at (0, 0) with width 10 and height 5.

For example, (2, 2) is inside the rectangle and (6, 4) is outside the rectangle.

(Hint: A point is in the rectangle if its horizontal distance to (0, 0) is less than or equal to10 / 2 and its vertical distance to (0, 0) is less than or equal to 5.0 / 2. Test your program to cover all cases.)

Sample Run 1

Enter a point with two coordinates: 2 2
Point (2.0, 2.0) is in the rectangle

Sample run 2

Enter a point with two coordinates: 6 4
Point (6.0, 4.0) is not in the rectangle

Sample Run 3

Enter a point with two coordinates: -5.1 -2.4
Point (-5.1, -2.4) is not in the rectangle

Sample Run 4

Enter a point with two coordinates: -4.9 2.49
Point (-4.9, 2.49) is in the rectangle

Sample Run 5

Enter a point with two coordinates: -4.99 -2.499
Point (-4.99, -2.499) is in the rectangle

Class Name: Exercise03_23

Answer 1

SOLUTION

Instruction:

• Save java File by their class name i.e
  • Exercise03_23.java
• Run Program as
  • javac Exercise03_23.java
  • java Exercise03_23
• Kindly Comment if there is any issue.

CODE IN PLAINTEXT============================================

import java.util.Scanner;

public class Exercise03_23
{

public static void main(String args[])
{
Scanner sc =new Scanner(System.in);
System.out.print("Enter a point with two coordinates:");
double x=sc.nextDouble();
double y=sc.nextDouble();
StringBuffer strbuf=new StringBuffer();
strbuf.append("The point");
strbuf.append("(");
strbuf.append(x);
strbuf.append(",");
strbuf.append(y);
strbuf.append(")");
if(CheckInside(x,y))
System.out.println(strbuf+ " is in the rectangle");
else
System.out.println(strbuf+ " is not in the rectangle");

}
public static boolean CheckInside(double x,double y)
{

if(x>=-5 && x<=5)
if (y>=-2.5 && y<=2.5)
return true;
return false;
}

}

Code Snapshot In IDE=============================

1- rogram to check whether the given point are within a rectanglr the user to enter a point (x, y) and checks whether the point is within the rectangle centered at (0, 0) with width 10 and height 5. */ // For Input Methods import java.util.Scanner; 3 4 5 public class Geometry { public static void main(String args[]) { // Scanner for input Scanner sc = new Scanner(System.in); System.out.print("Enter a point with two coordinates:"); double x = sc.nextDouble(); // X coordiante double y = sc.nextDouble(); // Y coordiante // Making String to to print in the ouptut StringBuffer strbuf = new StringBuffer(); strbuf.append("The point"); strbuf.append("("); strbuf.append(x); strbuf.append(","); strbuf.append(y); strbuf.append(")"); // Function Call to check given point within a rectangir if (CheckInside(x, y)) System.out.println(strbuf + " is in the rectangle"); else System.out.println(strbuf + " is not in the rectangle");

- TOUPI ILI }//END main // Function to check given point within a rectangir public static boolean CheckInside (double x, double y) { if (x >= -5 && x <= 5) // Checking X coordinate is within -5 to 5 if (y >= -2.5 && y <= 2.5) // Checking Y coordinate is within -2.5 to 2.5 return true; return false; }//END CheckInside

OUTPUT=============================

C:\Users\Asus\Documents\Java>javac Geometry.java C:\Users\Asus\Documents\Java>java Geometry ?Enter a point with two coordinates:2 2 The point(2.0,2.0) is in the rectangle, C:\Users\Asus\Documents\Java>java Geometry ?Enter a point with two coordinates: 6 4 The point(6.0,4.0) is not in the rectangle, C:\Users\Asus\Documents\Java>java Geometry ?Enter a point with two coordinates: -5.1 -2.4, The point(-5.1,-2.4) is not in the rectangle C:\Users\Asus\Documents\Java>java Geometry ?Enter a point with two coordinates: -4.9 2.49 The point(-4.9,2.49) is in the rectangle C:\Users\Asus\Documents\Java>java Geometry ?Enter a point with two coordinates:-4.99 -2.499 The point(-4.99,-2.499) is in the rectangle