diff --git a/src/main/java/Rectangle.java b/src/main/java/Rectangle.java
new file mode 100644
index 0000000..7dbed74
--- /dev/null
+++ b/src/main/java/Rectangle.java
@@ -0,0 +1,65 @@
+/**
+ * This class represents a rectangle.
+ * It has width and height.
+ * @see Rectangles
+ * @version 1.0
+ * @author Rémi Heredero
+ */
+public class Rectangle {
+    private int width; // Width of rectangle.
+    private int height; // Height of rectangle.
+
+    /**
+     * Constructor. Initializes width and height.
+     * @param width Width of rectangle.
+     * @param height Height of rectangle.
+     */
+    public Rectangle(int width, int height) {
+        this.width = width;
+        this.height = height;
+        System.out.println("New rectangle: " + width + "x" + height);
+    }
+
+    /**
+     * Constructor. Initializes width and height to 0.
+     */
+    public Rectangle(){
+        this(0, 0);
+    }
+
+    /**
+     * Get width of rectangle.
+     * @return width of rectangle
+     */
+    public int getWidth() {
+        return width;
+    }
+
+    /**
+     * Set width of rectangle.
+     * @param width width of rectangle
+     */
+    public void setWidth(int width) {
+        this.width = width;
+    }
+
+    /**
+     * Get height of rectangle.
+     * @return height of rectangle
+     */
+    public int getHeight() {
+        return height;
+    }
+
+    /**
+     * Set height of rectangle.
+     * @param height height of rectangle
+     */
+    public void setHeight(int height) {
+        this.height = height;
+    }
+
+    public String toString() {
+        return width + "x" + height;
+    }
+}
diff --git a/src/main/java/Rectangles.java b/src/main/java/Rectangles.java
new file mode 100644
index 0000000..848500d
--- /dev/null
+++ b/src/main/java/Rectangles.java
@@ -0,0 +1,84 @@
+import com.fasterxml.jackson.core.JsonGenerationException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Rectangles class. Contains list of rectangles and methods for importing and exporting rectangles to JSON file.
+ * @version 1.0
+ * @author Rémi Heredero
+ */
+public class Rectangles {
+    private List<Rectangle> rectangles; // List of rectangles.
+    private ObjectMapper objectMapper; // Object mapper for JSON serialization.
+
+    /**
+     * Constructor. Initializes rectangles list and object mapper.
+     */
+    public Rectangles() {
+        rectangles = new ArrayList<Rectangle>();
+        objectMapper = new ObjectMapper();
+    }
+
+    /**
+     * Add rectangle to list.
+     * @param rectangle rectangle to add
+     */
+    public void addRectangle(Rectangle rectangle) {
+        rectangles.add(rectangle);
+    }
+
+    /**
+     * Get all rectangles.
+     * @return list of rectangles
+     */
+    public List<Rectangle> getRectangles() {
+        return rectangles;
+    }
+
+    /**
+     * Export rectangles to JSON file.
+     * @return true if export was successful
+     */
+    public boolean exportToJSON() {
+        objectMapper.enable(SerializationFeature.INDENT_OUTPUT); // Enable JSON pretty printing.
+        try {
+            objectMapper.writeValue(new FileOutputStream("rectangles.json"), rectangles);
+            return true;
+        } catch (FileNotFoundException e) {
+            throw new RuntimeException(e);
+        } catch (JsonMappingException e) {
+            throw new RuntimeException(e);
+        } catch (JsonGenerationException e) {
+            throw new RuntimeException(e);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * Import rectangles from JSON file.
+     * @return true if import was successful
+     */
+    public boolean importFromJSON(){
+        try {
+            rectangles =  objectMapper.readValue(new FileInputStream("rectangles.json"), ArrayList.class);
+            return true;
+        } catch (FileNotFoundException e) {
+            throw new RuntimeException(e);
+        } catch (JsonMappingException e) {
+            throw new RuntimeException(e);
+        } catch (JsonGenerationException e) {
+            throw new RuntimeException(e);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}
diff --git a/src/main/java/Task1.java b/src/main/java/Task1.java
new file mode 100644
index 0000000..8646877
--- /dev/null
+++ b/src/main/java/Task1.java
@@ -0,0 +1,20 @@
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+
+public class Task1 {
+    public static void main(String[] args) {
+
+        Rectangles rectangles = new Rectangles();
+        rectangles.addRectangle(new Rectangle(10, 20));
+        rectangles.addRectangle(new Rectangle(20, 30));
+        rectangles.addRectangle(new Rectangle(30, 40));
+        rectangles.addRectangle(new Rectangle(40, 50));
+        rectangles.addRectangle(new Rectangle(50, 60));
+        rectangles.exportToJSON();
+        rectangles.addRectangle(new Rectangle(60, 70));
+        System.out.println("BREAKPOINT HERE");
+        rectangles.importFromJSON();
+        System.out.println("BREAKPOINT HERE");
+
+    }
+}
\ No newline at end of file