com.tomgibara.pronto.util
Class Arguments

java.lang.Object
  com.tomgibara.pronto.util.Arguments

public final class Arguments
extends java.lang.Object

Holds static methods for performing common checks on method parameters.

Author:

Tom Gibara

Method Summary

static void	notEmpty(java.lang.String str, java.lang.String name) Tests whether the supplied string parameter is not null and not the empty string.
static void	notNegative(long num, java.lang.String name) Tests whether the supplied long parameter is not negative.
static void	notNull(java.lang.Object obj, java.lang.String name) Tests whether the supplied parameter is null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

notNull

public static void notNull(java.lang.Object obj,
                           java.lang.String name)
                    throws java.lang.IllegalArgumentException

Tests whether the supplied parameter is null.

Parameters:

obj - the parameter

name - the name of the parameter

Throws:

java.lang.IllegalArgumentException - if the parameter is null

notEmpty

public static void notEmpty(java.lang.String str,
                            java.lang.String name)
                     throws java.lang.IllegalArgumentException

Tests whether the supplied string parameter is not null and not the empty string.

Parameters:

str - the string parameter

name - the name of the parameter

Throws:

java.lang.IllegalArgumentException - if the parameter is null or has zero length

notNegative

public static void notNegative(long num,
                               java.lang.String name)
                        throws java.lang.IllegalArgumentException

Tests whether the supplied long parameter is not negative.

Parameters:

num - the long parameter

name - the name of the parameter

Throws:

java.lang.IllegalArgumentException - if the parameter is less than zero