pick a Java method from the following class $($Simple$2.$java$)$and write a single JUnit test for it$.$ick a Java method from the following class $($Simple$2.$java$)$and write a single JUnit test for it$.$ public double average$()$

$\{$

int sumNums $=$ sum$()$;

return $($average$/3\mathrm{.}0)$;

$\}$

public int getNum$1()\{$

return num$1$;

$\}$