Java.lang.String.isEmpty

From EggeWiki

I was getting the following error when I deployed a component into a JBoss container.

java.lang.NoSuchMethodError: java.lang.String.isEmpty()Z

Initially, I thought it was an issue with the classloader. Turns out, I was using a new Java 1.6 feature.

    /**
     * Returns <tt>true</tt> if, and only if, {@link #length()} is <tt>0</tt>.
     *
     * @return <tt>true</tt> if {@link #length()} is <tt>0</tt>, otherwise
     * <tt>false</tt>
     *
     * @since 1.6
     */
    public boolean isEmpty() {
	return count == 0;
    }