tester.java

public class tester {
    public static void main(String[] args) {
        int[][] jaggedArray = new int[5][];

        // Filling the jagged array with increasing values
        int counter = 1;
        for (int i = 0; i < jaggedArray.length; i++) {
            jaggedArray[i] = new int[i + 1];
            for (int j = 0; j < jaggedArray[i].length; j++) {
                jaggedArray[i][j] = counter++;
            }
        }

        // Printing the jagged array
        for (int i = 0; i < jaggedArray.length; i++) {
            for (int j = 0; j < jaggedArray[i].length; j++) {
                System.out.print(jaggedArray[i][j] + " ");
            }
            System.out.println();
        }
    }
}

// public class tester {
// // test the triangle circle and rectangle classes
// public static void main(String[] args) {
// Triangle t = new Triangle(3, 4, 5);
// Circle c = new Circle(5);
// Rectangle r = new Rectangle(3, 4);
// System.out.println("Triangle area: " + t.getArea());
// System.out.println("Triangle perimeter: " + t.getPerimeter());
// System.out.println("Circle area: " + c.getArea());
// System.out.println("Circle perimeter: " + c.getPerimeter());
// System.out.println("Rectangle area: " + r.getArea());
// System.out.println("Rectangle perimeter: " + r.getPerimeter());
// }
// }