diff --git a/task04/src/com/example/task04/Line.java b/task04/src/com/example/task04/Line.java
new file mode 100644
index 00000000..2b87697b
--- /dev/null
+++ b/task04/src/com/example/task04/Line.java
@@ -0,0 +1,27 @@
+package com.example.task04;
+
+public class Line {
+    private final Point p1;
+    private final Point p2;
+
+    public Line(Point p1, Point p2){
+        this.p1 = p1;
+        this.p2 = p2;
+    }
+
+    public Point getP1() {
+        return p1;
+    }
+
+    public Point getP2() {
+        return p2;
+    }
+
+    public String toString() {
+        return String.format("%d, %d", p1.toString(), p2.toString());
+    }
+
+    public boolean isCollinearLine(Point p) {
+        return Math.abs(p.distance(p1) + p.distance(p2) - p1.distance(p2)) < 1e-10;
+    }
+}
diff --git a/task04/src/com/example/task04/Point.java b/task04/src/com/example/task04/Point.java
new file mode 100644
index 00000000..9ae478bb
--- /dev/null
+++ b/task04/src/com/example/task04/Point.java
@@ -0,0 +1,35 @@
+package com.example.task04;
+
+public class Point {
+    int x;
+    int y;
+
+    public Point(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    public Point() {
+
+    }
+
+    void print() {
+        String pointToString = String.format("(%d, %d)", x, y);
+        System.out.println(pointToString);
+    }
+
+    void flip() {
+        int tmp;
+        tmp = x;
+        x = -y;
+        y = -tmp;
+    }
+
+    double distance(Point point) {
+        return Math.sqrt(Math.pow((x - point.x), 2) + Math.pow((y - point.y), 2));
+    }
+
+    public String toString() {
+        return "(" + x + "," + y + ")";
+    }
+}
\ No newline at end of file