Question $3$

Which of the following is an example of functional interface in Java $8?$

Select an option

I interface foo $f$ boolean pquals$($object obd$)$: i

$1$ interface comparatorets $f$

$2$ boolean equals $($object obj$)$;

$3$ Int compare$(T$ o$1,T$ a$2)$:

$1$ interface foo $($

$2$ int $m()$ :

$3$ Object elone$()$:

$4\}$

$1$ interface int $m($Iterablesstring $3$ arg$)$; $\}$

$2$ interface int $m($Iterablecinteger $>$ arg