Exam 1z0-809 topic 1 question 107 discussion

C is the correct answer

With given options answer is C. Since input is read from user and it is not printed. Also System.console() might return null if console is not available and NPE might be thrown, but that option is not in answers.

C. The code reads the password without echoing characters on the console. tested

import java.io.Console; public class Main { public static void main (String[] args) { Console console = System.console(); char[] pass = console.readPassword("Enter password:"); // line n1 String password = new String(pass); // line n2 } } C:\cjava\809>javac Main.java C:\cjava\809>java Main Enter password: C:\cjava\809> Answer is C

Answer is : C

Answer is : C

C tested, on windows 10 CMD.

Answer is A. Exception in thread "main" java.lang.NullPointerException

C is correct

Answer C. Tested

Answer is A.

C. The code reads the password without echoing characters on the console. tested

Answer is D tested