Java

Question 1

what is the Java equivalent to DISPLAY?

Answer 1

System.out.println(…);

Question 2

how do you display a String?

Answer 2

“___”

Question 3

how do you compile a code?

Answer 3

javac (class name).java

Question 4

how do you execute a code?

Answer 4

java (class name)

Question 5

how do you make a comment?

Answer 5

// your comments here

Question 6

what are the types of variables?

Answer 6

char
String
boolean
int
double

Question 7

how do you write character types?

Answer 7

char x = ‘A’;

Question 8

how do you write strings?

Answer 8

String “example”;

Question 9

how do you write integers?

Answer 9

int exampleOne = 3;

Question 10

how do you start a code?

Answer 10

public class (class name){
     public static void main(String[] args){
          // code here
     }
}

Question 11

what are the primitive data types?

Answer 11

char
boolean
int
double

Question 12

what is camel-case?

Answer 12

start variable with a lowercase and then every new word starts with a capital letter

Question 13

what are the compound assignment operators?

Answer 13

\+= (adds to variable)
-= (subtracts from variable)

Question 14

how do you turn an argument from a string into an integer or a double?

Answer 14

Integer.parseInt (args [0] )

Double.parseDouble [args [1] )

Question 15

how do you write and, or, and not?

Answer 15

&&
||
!

Question 16

what type is args[ ]?

Answer 16

String

Question 17

how do you turn args [ ] into an integer or a double?

Answer 17

Integer.parseInt(args[ ]);

Double.parseDouble(args[ ]);

Question 18

when do you NOT put a semicolon at the end of a line?

Answer 18

IFs and loops

Question 19

what is a FOR loop and why is it used?

Answer 19

an alternative to a WHILE loop but it is more compact

Question 20

how do you stop a never ending loop in the terminal?

Answer 20

Ctrl + C

Question 21

what does BREAK do?

Answer 21

jumps out of the loop or it quits the loop

Question 22

what does CONTINUE do?

Answer 22

skips the rest of the statements of the current loop iteration, continues with the next iteration