Java - Quiz 3

What is the correct output?

• a) true

  true

  false

  true

• b) true

  false

  true

  true

• c)false

  false

  true

  true

• d)false

  true

  true

  false

condition ? expression1 : expression2;

if condition is true, expression2 is executed.

• a) true

• b) false

PREDICT THE OUTPUT:

int x = 60;

int y = 90;

if (y%x == 0 && y-x==30){

System.out.println("Hello World"); }

else{

System.out.println("Error"); }

• a) Hello World

• b) Error

• c) Hello world

• d) Hello World

  Error

When the variable being switched on is equal to a case, the statements following that case will execute until a _ statement is reached.

• a) continue;

• b) break;

• c) default;

• d) go;

Which data types are allowed in a Java switch statement?

• a) int, short, byte, double, char

• b) String, int, short, char

• c) char, byte, short, int, String

• d) String, int, byte

What option describes button number 5 on the toolbar?

• a) Step over an expression

• b) Step over

• c) Step into

• d) Step out of

which is the Default format of LocalDateTime?

• a) 2014-04-28

• b) 2014-04-28T23:25:49.342Z

• c) 2014-04-28T16:25:49.341

• d) 28::Apr::2014

int [ ] [ ] numbers = new int [ 8 ][ 7 ]

which option is correct?

• a) 7 arrays of 8 elements each

• b) 8 arrays of 7 elements each

How many times will the following code print "Welcome to Java"?

int count = 0;

while (count < 10) {  

System.out.println("Welcome to Java");  

count++; }

• a) 11

• b) 9

• c) 8

• d) 10

What is the output of the following code?

int x = 0;

while (x < 4) {

 x = x + 1; }

System.out.println("x is " + x);

• a) x is 3

• b) x is 2

• c) x is 4

• d) x is 0