public String getParameter(final String paramName) {
		if (requestParameters == null) {
			return null;
		}
		String[] values = requestParameters.get(paramName);
		if ((values != null) && (values.length > 0)) {
			return values[0];
		}
		return null;
	}
public String getParameter(final String paramName) {
		if (requestParameters == null) {
			return null;
		}
		String[] values = requestParameters.get(paramName);
		if ((values != null) && (values.length > 0)) {
			return values[0];
		}
		return null;
	}
public String getParameter ( final String paramName ) { if ( requestParameters == null ) { return null ; } String [ ] values = requestParameters . get ( paramName ) ; if ( ( values != null ) && ( values . length > 0 ) ) { return values [ 0 ] ; } return null ; }
Returns single value of a parameter. If parameter name is used for
more then one parameter, only the first one will be returned.

@return parameter value, or <code>null</code> if not found
Returns single value of a parameter . If parameter name is used for more then one parameter only the first one will be returned .