Test 1

Question 1

How do you output statements?

Answer 1

System.out.println(“”);
or
System.out.print(“”);

Question 2

How do you state a variable as a whole number?

Answer 2

int x;

Question 3

How do you state a variable as a whole number? plus assign a value?

Answer 3

int x = 3;

Question 4

How do you state a variable as a decimal number?

Answer 4

double x;

Question 5

How do you state a variable as a decimal number? plus assign a value?

Answer 5

double x = 3.05;

Question 6

Import the scanner at the start

Answer 6

import java.util.Scanner;

Question 7

Make a Scanner object

Answer 7

Scanner input = new Scanner(System.in);

Question 8

Make a Scanner do its stuff (the object is called input) (string is called x)

Answer 8

x = input.next();

Question 9

What is the Scanner Input.next””(); if Its a Integer or Double

Answer 9

nextInt
nextDouble

Question 10

What is the difference between == & = ?

Answer 10

== Is a check for truth and false
= Assigning a value to a variable

Question 11

What is % represent

Answer 11

modulo. its the remainder of a division. Wait…… I can make a long division thing!

Question 12

8 % 3 =

Answer 12

2

Question 13

9 % 2 =

Answer 13

1

Question 14

15284286 % 2 =

Answer 14

0 Because its all even…. except the 5…. it still works out

Question 15

x = 4;
y = x++;
z = 5 + x;

((y == 5) && (x == 5) && (z <= 10))
T || F

Answer 15

False, y is not equal to 5 but 4
z is 10
x is 5

Question 16

y = x++;
y = ++x;
Difference?

Answer 16

yes, (y = x)++ is direct.
The ++ is not between the y = x so first assign the variable then add 1.

(y = ++x) is not direct. The ++ is in between the variables so add 1 then assign.

Question 17

Java reads from

Answer 17

right to left

Question 18

x += 2;

Answer 18

This is a short version of x = x +2
This is basically adding 2 to the value of x.

Question 19

x/= y;

Question 20

Anything wrong with this
code?
int x = 6
int y
x /= 2
x = y
x = 3
y = 3

Answer 20

Yeah BIG PROBLEM
No semicolons?

Question 21

What is ‘=!’

Answer 21

nothing…. like it doesn’t do anything I think….

Question 22

What is ‘!=’

Answer 22

Is not equal to

Question 23

What is ‘!’

Answer 23

Not

Question 24

Were do you put the operations + - / * % > <
x = x ‘insert operation’ 2

Answer 24

Behind the =
x -= 2

Question 25

what does && represent

Answer 25

and

Question 26

what does || represent

Answer 26

Or

Question 27

format of a switch statement? string = k
one switch is hi. Add default

Answer 27

switch (k)
{
case “hi”:
System.out.println(“hi”);
break;
case “2”:
x = 2;
break;
default:
System.out.println(“erm what the sigma?”);
}

Question 28

while poop

Answer 28

while (0 == 0){
System.out.println(“POOOP”);
System.out.println(“POOP”);
System.out.println(“POP”);
}