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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.
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
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