Lecture $2$ HW

$(1)$ Given objl.setWeight$(5)$;

Does the method setweight have access to

most of the instance vars of objl?

$(2)$ Given:

public class X

private int $a$;

public int $b$;

public static int $c$;$,x$ obj $=$new $)$;

$3$

Given:

Class Y has main$(...$

Valid or invalid:

@$lj{j}_{0}a=20$;

$06j*b={30}^{\text{'}},$

$(3)$ main$(...)($Valid or invalid$)$

boolean $flg=$ objl $f=$