package demo;

/**
 * A widget for demonstration of <b>Javadoc</b>.
 */
public class Foo {
    /* no fields */

    /**
     * Prints information indicating that the constructor has been called.
     */
    public Foo() {
        System.out.println("new Foo();");
    }

    /**
     * Prints information indicating that bar(x) has been called.
     * @param x Determines value printed between the parens.
     * @throws IllegalArgumentException if x &lt; 0.
     * @return "baz"
     */
    public String bar(int x) {
        if (x <= 0) {
            throw new IllegalArgumentException(
                    "bar called with negative input.");
        }
        // see: PrintStream.format - the "%d" is replaced with the value of x.
        System.out.format("bar(%d);\n", x);
        return "baz";
    }
}