Find the issues in the following Java code, then correct them. public class Rectangular $\{$ private int length; private int width; public Rectangular$($int length, int width$)\{$ this.length $=$ length; this.width $=$ width; $\}$ public String area $()\{$ return length $*$ width; $\}\}$ public class RectangularTest $\{$ public static void main $($String$[]$ args$)\{$ Rectangular r$1=$ new Rectangular$(3,5)$; System.out.println$($area$())$; $\}\}$

IT$401($Java$)$