What does this error mean "Error: Invalid or corrupt jarfile" has a solution? [closed]

Create a program in java and then I wanted to see if it worked so try to open it and I get this error, if you have a solution tell me please and if you can explain what that means and why it happens.

public class CalcularAreaDeUnCiculo {
    public static void main(String[] args) {
        int radius = 3;
        System.out.print1n("el radio del circulo es " + radius); /* * Area del circulo es pi * r * r es r el radio. */
        double area = Math.PI * radius * radius;
        System.out.print1n("area es " + area);
    }
}