for ( int i = 0; i < providers.length; ++i )
{
extra = extra + providers[ i ].getClass().getName() + ":\n";
final JMXConnectorProviderInfo info = getProviderInfo( providers[ i ].getClass() );
if ( info != null )
{
extra = extra + info.getUsage() + "\n";
}
else
{
extra = extra + "<none available>";
}