Zadanie$/$Problem $1-$

Operator new is used to:

a$)$ defining new classes

b$)$ creating objects of classes

c$)$ assigning values to variables

d$)$ defining methods

Zadanie$/$Problem $2$

After 'int the values of variables $b$ and $c$ are

a$)12,0$

b$)5,1$

c$)5,0$

d$)12,1$

Zadanie$/$Problem $3.$

After executing instructions 'String s$1="$M$",$ s$2="$H$"$;$\text{'}$ and $\text{'}$s$2=$ s$1$;$\text{'},$ the reference to string $"$M$"$ is contained in variable$($s$)$:

a$)$ none of them

b$)$ both $s1$ and s$2$

c$)$ s$2$

d$)s1$

Zadanie$/$Problem $4$

After definition 'String$[][]$ null, $\{"$A$",$ null,"U$"\},\{"$W$"\}\}$;$\text{'},$ out of the expressions $\text{'}$a$[0][1].$length$()\text{'}$ and $\text{'}$a$[1][0].$ length$()\text{'}$ correct ones are

a$)$ only the second

b$)$ both

c$)$ none of them

d$)$ only the first

Zadanie$/$Problem $5q,$

Instruction 'String $[]$ arr$=$new String $[3]$ ; creates one local reference arr and

a$)$ array of three references to object of class String and three object of this class

b$)$ three object of class

String c$)$ array of three references to object of class String d$)$ nothing more

Zadanie$/$Problem $6-$

Variables of type long occupy in memory:

a$)4$ bytes

b$)8$ bits

c$)4$ or $8$ bytes, depending on platform

d$)8$ bytes

Zadanie$/$Problem $7$

Reference this can be used only in

a$)$ static functions

b$)$ constructors, nonstatic methods and static functions

c$)$ constructors and

nonstatic methods

d$)$ constructors and static functions