Error: No public or protected classes found to documents 1 error

[Frank Thuring]

Dear experts,
I have a problem. I try to understand an exercise in the book head first java.

class MultiFor { 
	public static void main(String[] args) { 

	   for(int x = 0; x < 4; x++) {

		for(int y = 4; y > 2; Y--) {
		[u]System.out.println (x + "  " + y);[/u]                                }
		if (x == 1) {
		   x++;
		}
	   }

	} 
} 

then I get the error:

D:\Java\bin>javadoc MultiFor.java
Loading source file MultiFor.java...
Constructing Javadoc information...
javadoc: error - No public or protected classes found to document.
1 error

Can someone tell me what I am doing wrong. The code is from the book. I think the code is not quit good....see underlined
I work under windows with the command prompt, I cannot solve this problem....







[HENRY: Fixed code tags]

[Frank Thuring]

I've changed class MultiFor in public class MultiFor but it still goes wrong.....

I still get the error:
javadoc: error - No public or protected classes found to document

[Tom Reilly]

I was able to reproduce your error and then tried making the class public as you suggested and the javadoc successfully ran. Here's the code that worked for me:

public class MultiFor
{
    public static void main(String[] args)
    {
        for(int x = 0; x < 4; x++)
        {
            for (int y = 4; y > 2; y--)
            {
                System.out.println (x + "  " + y);
            }

            if (x == 1) {
                x++;
            }
        }
	}
}

[Priety Sharma]

If you simply try compiling the code with javac the compiler, even without making the class public it works.

[Tom Reilly]

For what it's worth, I also changed your code to remove the compiler error:

for(int y = 4; y > 2; Y--)

should be:

for(int y = 4; y > 2; y--)

(Lower case 'y')

[Jesper de Jong]

Do you just want to compile the class, or do you want to generate Javadoc documentation?

To compile the class, use javac, not javadoc.

To generate documentation for your class, you first have to put Javadoc comments in your source code and then run the javadoc tool on it. Your source code doesn't have any Javadoc comments.

[Rob Spoor]

Javadoc's default accessibility level is protected. You can use the -package or -private flag to extend visibility.

[Frank Thuring]

Thank you that was the solution

I had to compile with javac.