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Android

Posted by Greg King
Greg King
4,073 Points

What's wrong with this program?

This simple program that I learned in the first videos here will not run in Eclipse. Am I missing something??

import java.io.Console;

public class LotsOfWords {

public static void main(String[] args) {
    // Test program.  Why will console not work here?

    Console console = System.console();

    String thisThing = "program";
    console.printf("This is the first line of the %s\n", thisThing);
    console.printf("Here is another line in the %s\n", thisThing);


}

}

It gives me this error in the console:

Exception in thread "main" java.lang.Error: Unresolved compilation problem: The method printf(String, Object[]) in the type Console is not applicable for the arguments (String)

at LotsOfWords.main(LotsOfWords.java:9)

Thanks a bunch

1 Answer

Ken Alger
STAFF
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Greg;

Eclipse does not have a great, or any, implementation of the Console class. If you want to build the projects in Eclipse, look into the Scanner class, which is similar and is support tree d by Eclipse.

Post back with additional questions.

Ken

Greg King
Greg King
4,073 Points

Thank you, do you guys cover the scanner class in later lessons? I have not learned that yet.

Ken Alger
Ken Alger
Treehouse Teacher
Ken Alger
Ken Alger
Treehouse Teacher

Greg;

Thus far the Scanner class has not been officially covered. Eclipse is on the course roadmap, not sure of an exact timeline, but it is on the list.

Take a look at the docs and with a few minor changes implementation should be straightforward.

Happy coding.

Ken