Something

import java.awt.*;
import hsa.Console;

public class AvgRain
{
    static Console c;

    public static void main (String[] args)
    {
        c = new Console ();

        double x, y, z;

        c.print ("Rain fall for April = ");
        x = c.readDouble ();

        c.print ("Rain fall for May = ");
        y = c.readDouble ();

        c.print ("Rain fall for June = ");
        z = c.readDouble ();

        c.print ("The average rain fall = " + ((x + y + z) / 3));
    }
}