Convert this java code to MIPS assembly:

import java.util.Scanner;

public class Shapes $\{$

static int a$,$b;

public static void main$($String$[]$ args$)\{$

System.out.println$("$welcome to the shape calculator

please choose a

shape from the menu:"$)$;

System.out.print ln$("1.$ Square

$2.$Rectangle"$)$;

Scanner scn $=$ new Scanner$($

System.in$)$;

int choice $=$ scn$.$ nextint $()$ ;

switch $($choice$)\{$

case $1$:

System.out.print ln$("$Enter the side"$)$;

$a=scn.$ nextint $()$;

square$($a$)$;

break;

case $2$ :

System.out.print ln$("$Enter the first side"$)$;

$a=scn.$nextint $()$;

System.out.print ln$("$Enter the second side"$)$;

$b=scn.$ nextint $()$;

rectang $le(a,b)$;

default:

System.out.print ln$("$invalid choice"$)$;

$\}$

break;

$\}$

public static void square$($int a$)\{$

$\}$

rectangle$($a$,$ a$)$;

public static void rectangle$($int a$,$ int b$)\{$

System.out.print ln$("$The area is: $"+($a$*$b$))$;

$\}$

system.out.print The perimeter is: $\{$:$+((2^{***}a)+(2^{**}b)))$;

$\}$