Simple Java Problem

Hi!

I have a problem with a simple Java program. If you followed the basic Java course you should be able to help me.

This is my program:

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import java.io.Console;

public class NewPractice {

public static void main(String[] args) { Console console = System.console();

console.printf("Hello! Welcome to the new refurbished knight hall.\n");

String knightStatus = console.readline("Are you a knight? ");

if (!knightStatus.equalsIgnoreCase("yes")) { console.printf("Sorry... You are not allowed into the knight hall."); System.exit(0); }

console.printf("Ah, dear knight. Please enter!");

 }

} ///////////////////////////////////////////////////////////////////////////////////////

So you probably don't need any instructions on what i'm trying to run. Here is the error code when i try to compile, using javac NewPractice.java

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treehouse:~/workspace$ javac NewPractice.java
Picked up JAVA_TOOL_OPTIONS: -Xmx128m
Picked up _JAVA_OPTIONS: -Xmx128m
NewPractice.java:9: error: incompatible types: String cannot be converted to boolean
String knightStatus = console.readline("Are you a knight? ");
^
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
1 error
/////////////////////////////////////////////////////////////////////////////////////

So what's the issue here?