Added Java lab programs

point/MyPoint.java

@@ -0,0 +1,53 @@
+class MyPoint {
+
+    private int x;
+    private int y;
+
+    // No-argument constructor
+    MyPoint() {
+        x = 0;
+        y = 0;
+    }
+
+    // Overloaded constructor
+    MyPoint(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    // Set both x and y
+    void setXY(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    // Return x and y as a 2-element array
+    int[] getXY() {
+        return new int[] { x, y };
+    }
+
+    // String representation
+    public String toString() {
+        return "(" + x + ", " + y + ")";
+    }
+
+    // Distance to given (x, y)
+    double distance(int x, int y) {
+        return Math.sqrt(
+            (this.x - x) * (this.x - x) + (this.y - y) * (this.y - y)
+        );
+    }
+
+    // Distance to another MyPoint object
+    double distance(MyPoint another) {
+        return Math.sqrt(
+            (this.x - another.x) * (this.x - another.x) +
+                (this.y - another.y) * (this.y - another.y)
+        );
+    }
+
+    // Distance to origin (0, 0)
+    double distance() {
+        return Math.sqrt(x * x + y * y);
+    }
+}

point/TestMyPoint.java

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+import java.util.Scanner;
+
+public class TestMyPoint {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        // Test default constructor
+        MyPoint p1 = new MyPoint();
+        System.out.println("p1: " + p1);
+
+        // Test overloaded constructor
+        System.out.print("Enter x coordinate: ");
+        int x = sc.nextInt();
+        System.out.print("Enter y coordinate: ");
+        int y = sc.nextInt();
+
+        MyPoint p2 = new MyPoint(x, y);
+        System.out.println("p2: " + p2);
+
+        // Test setXY()
+        System.out.print("Enter new x for p1: ");
+        int x1 = sc.nextInt();
+        System.out.print("Enter new y for p1: ");
+        int y1 = sc.nextInt();
+
+        p1.setXY(x1, y1);
+        System.out.println("Updated p1: " + p1);
+
+        // Test getXY()
+        int[] coords = p1.getXY();
+        System.out.println("getXY(): (" + coords[0] + ", " + coords[1] + ")");
+
+        // Test distance() to origin
+        System.out.println("Distance from p1 to origin: " + p1.distance());
+
+        // Test distance(int x, int y)
+        System.out.print("Enter x of another point: ");
+        int x2 = sc.nextInt();
+        System.out.print("Enter y of another point: ");
+        int y2 = sc.nextInt();
+
+        System.out.println(
+            "Distance from p1 to (" +
+                x2 +
+                ", " +
+                y2 +
+                "): " +
+                p1.distance(x2, y2)
+        );
+
+        // Test distance(MyPoint another)
+        System.out.println("Distance from p1 to p2: " + p1.distance(p2));
+
+        sc.close();
+    }
+}