In the previous article, we have seen Java Program to Check if Line Passes Through the Origin

**Area of overlapping rectangles java: **In this article we will discuss about Java Program to Find Total Area of Two Overlapping Rectangles.

## Java Program to Find Total Area Two Rectangles Overlap

**Area of two rectangles: **Before going into the program directly, let’s first know hoe we can get the total area of two overlapping rectangle.

**Explanation:**

We can add the area of both the rectangles first, then we can subtract the area of intersecting part as it is present twice.

Total Area of Two Overlapping Rectangle = (Area of First rectangle + Area of Second rectangle) - Area of Intersecting part

Let’s see different ways to see how to find total area of two overlapping rectangles.

### Method-1: Java Program to Find Total Area Two Rectangles Overlap By Using Static Value

**Approach:**

- Declare theĀ points.
- Then call the
`totalArea()`

method where we will get the total area of two overlapping rectangle. - Inside method we will find area of first rectangle and area of second rectangle and intersecting part.
- Then subtract the area of intersecting part from the addition of both area of first rectangle and second rectangle.
- Then Print the result.

**Program:**

// JAVA Code to Java Program //to Find Total Area of Two Overlapping Rectangles public class Main { //totaArea() method to find total area of two overlapping rectangles public static int totalArea(int l1x,int l1y,int l2x,int l2y,int r1x,int r1y,int r2x,int r2y) { // Area of first Rectangle int firstArea = Math.abs(l1x - r1x) * Math.abs(l1y - r1y); // Area of second Rectangle int secondArea = Math.abs(l2x - r2x) * Math.abs(l2y - r2y); // Length of intersecting part int intersectingArea = (Math.min(r1x, r2x) - Math.max(l1x, l2x)) * (Math.min(r1y, r2y) - Math.max(l1y, l2y)); //returning the totallength of overlapping rectangles return (firstArea + secondArea - intersectingArea); } /* Driver program to test above function */ public static void main(String[] args) { //Points are declared int l1x=2; int l1y=1; int l2x=3; int l2y=2; int r1x=5; int r1y=5; int r2x=5; int r2y=7; //Calling totaArea() method System.out.println("Total Area: " +totalArea(l1x,l1y,l2x,l2y,r1x,r1y,r2x,r2y)); } }

Output: Total Area: 16

### Method-2: Java Program to Find Total Area Two Rectangles Overlap By User Input Value

**Approach:**

- Take input of points.
- Then call the
`totalArea()`

method where we will get the total area of two overlapping rectangle. - Inside method we will find area of first rectangle and area of second rectangle and intersecting part.
- Then subtract the area of intersecting part from the addition of both area of first rectangle and second rectangle.
- Then Print the result.

**Program:**

import java.util.*; // JAVA Code to Java Program //to Find Total Area of Two Overlapping Rectangles public class Main { //totaArea() method to find total area of two overlapping rectangles public static int totalArea(int l1x,int l1y,int l2x,int l2y,int r1x,int r1y,int r2x,int r2y) { // Area of first Rectangle int firstArea = Math.abs(l1x - r1x) * Math.abs(l1y - r1y); // Area of second Rectangle int secondArea = Math.abs(l2x - r2x) * Math.abs(l2y - r2y); // Length of intersecting part int intersectingArea = (Math.min(r1x, r2x) - Math.max(l1x, l2x)) * (Math.min(r1y, r2y) - Math.max(l1y, l2y)); //returning the totallength of overlapping rectangles return (firstArea + secondArea - intersectingArea); } /* Driver program to test above function */ public static void main(String[] args) { //Scanner class object created Scanner sc=new Scanner(System.in); //Takinginput of points System.out.println("Enter x,y index of L1 : "); int l1x=sc.nextInt(); int l1y=sc.nextInt(); System.out.println("Enter x,y index of L2 : "); int l2x=sc.nextInt(); int l2y=sc.nextInt(); System.out.println("Enter x,y index of R1 : "); int r1x=sc.nextInt(); int r1y=sc.nextInt(); System.out.println("Enter x,y index of R2 : "); int r2x=sc.nextInt(); int r2y=sc.nextInt(); //Calling totaArea() method System.out.println("Total Area: " +totalArea(l1x,l1y,l2x,l2y,r1x,r1y,r2x,r2y)); } }

Output: Enter x,y index of L1 : 2 1 Enter x,y index of L2 : 3 2 Enter x,y index of R1 : 5 5 Enter x,y index of R2 : 5 7 Total Area: 16

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