Chapter 3 Exercise 23, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

**3.23 (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, as shown in Figure 3.7b. (Hint: A point is in the rectangle if its horizontal distance to (0, 0) is less than or equal to 10 / 2 and its vertical distance to (0, 0) is less than or equal to 5.0 / 2. Test your program to cover all cases.) Here are two sample runs.
Enter a point with two coordinates: 2 2
Point (2.0, 2.0) is in the rectangle

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

import java.util.Scanner;
 
public class ProgrammingEx3_23 {
 
 public static void main(String[] args) {
 
  Scanner input = new Scanner(System.in);
 
  System.out.print("Enter a point with two coordinates:");
  double x = input.nextDouble();
  double y = input.nextDouble();
 
  String s = " ";
 
  if (Math.abs(x) > 5 || Math.abs(y) > 2.5) {
   s = " not ";
  }
 
  System.out.print("Point (" + x + ", " + y + ") is" + s
    + "in the rectangle");
 
 }
 
}