part 2

Question 1

we should have in a java program a) 1 class b) 2 classes c)at least 1 class

Answer 1

at least 1class

Question 2

what does this symbol mean / or / ?
a) comment b) double comment c)multiple comment d)single comment

Answer 2

multiple comment

Question 3

what does this symbol mean (// )?
a) comment b) double comment c)multiple comment d)single comment

Answer 3

single comment

Question 4

what does reserve word mean? and Exp?

Answer 4

reserve words are words those words that have specific meaning in Java.
examples : system ,

Question 5

system out is ?

Answer 5

object

Question 6

print ln is ?

Answer 6

method

Question 7

primitive data types ?

Answer 7

byte , short , int , long

Question 8

integer is?

Answer 8

a number without a decimal point .

Question 9

memory = Byte

Question 10

variable’s or identifiers:

Answer 10

are used to stroke value followed by a alphabet .they have no special character and no blank space .

Question 11

system out=

Answer 11

is object

Question 12

print ln =

Answer 12

method

Question 13

byte = how many bytes ?
short =how many bytes ?
int = how many bytes ?
long= how many bytes ?

Answer 13

byte 1
2 bytes
4byte
8 bytes

Question 14

what is a integer ?

Answer 14

it is a number that doesn’t have a decimal point

Question 15

definition real number ? examples?

Answer 15

real numbers are are numbers with decimal point . exp : float - double

Question 16

Non primitives :

Answer 16

class - string