Command Line Interfaces

Question 1

Input Stream (System.in)

Answer 1

Captures characters machine reads or a user types into the console.

Question 2

Output Stream (System.out)

Answer 2

Outputs characters to the console to be read by the user.

Question 3

Scanner nextLine()

Answer 3

Gets text from input stream up until a newline (the user presses Enter).

Question 4

Scanner nextInt()

Answer 4

Gets the next characters that can be converted to the numeric data type and leaves the rest.

Question 5

Parsing

Answer 5

Is the conversion of data between unlike data types. String → int

Question 6

Command Line Arguments

Answer 6

Arguments passed on the command line to an application are populated into String[] args array of the main() method.