Package gov.nist.secauto.decima.core.util

Class ObjectUtil

java.lang.Object

gov.nist.secauto.decima.core.util.ObjectUtil

public class ObjectUtil
extends Object

Method Summary

Modifier and Type	Method	Description
static String	requireNonEmpty(String str)	Checks that the provided string is not empty.
static String	requireNonEmpty(String str, String message)	Checks that the provided string is not empty.
static <T> Collection<T>	requireNonEmpty(Collection<T> col)	Checks that the provided collection is not empty.
static <T> Collection<T>	requireNonEmpty(Collection<T> col, String message)	Checks that the provided collection is not empty.
static String	requireNullOrNonEmpty(String str)	Checks that the provided string is either null or not empty.
static String	requireNullOrNonEmpty(String str, String message)	Checks that the provided string is either null or not empty.
static <T> Collection<T>	requireNullOrNonEmpty(Collection<T> col)	Checks that the provided collection is either null or not empty.
static <T> Collection<T>	requireNullOrNonEmpty(Collection<T> col, String message)	Checks that the provided collection is either null or not empty.

Methods inherited from class java.lang.Object

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

Method Detail

requireNonEmpty

public static String requireNonEmpty(String str)

Checks that the provided string is not empty.

Parameters:

str - the string to check

Returns:

the same string

Throws:

NullPointerException - if the provided string is null

IllegalArgumentException - if the provided string is empty

requireNonEmpty

public static String requireNonEmpty(String str,
                                     String message)

Checks that the provided string is not empty.

Parameters:

str - the string to check

message - the exception message to use

Returns:

the same string

Throws:

NullPointerException - if the provided string is null

IllegalArgumentException - if the provided string is empty

requireNonEmpty

public static <T> Collection<T> requireNonEmpty(Collection<T> col)

Checks that the provided collection is not empty.

Type Parameters:

T - the contained type of the collection

Parameters:

col - the collection to check

Returns:

the same collection

Throws:

NullPointerException - if the provided collection is null

IllegalArgumentException - if the provided collection is empty

requireNonEmpty

public static <T> Collection<T> requireNonEmpty(Collection<T> col,
                                                String message)

Checks that the provided collection is not empty.

Type Parameters:

T - the contained type of the collection

Parameters:

col - the collection to check

message - the exception message to use

Returns:

the same collection

Throws:

NullPointerException - if the provided collection is null

IllegalArgumentException - if the provided collection is empty

requireNullOrNonEmpty

public static String requireNullOrNonEmpty(String str)

Checks that the provided string is either null or not empty.

Parameters:

str - the string to check

Returns:

the same string

Throws:

IllegalArgumentException - if the provided string is not null and is empty

requireNullOrNonEmpty

public static String requireNullOrNonEmpty(String str,
                                           String message)

Checks that the provided string is either null or not empty.

Parameters:

str - the string to check

message - the exception message to use

Returns:

the same string

Throws:

IllegalArgumentException - if the provided string is not null and is empty

requireNullOrNonEmpty

public static <T> Collection<T> requireNullOrNonEmpty(Collection<T> col)

Checks that the provided collection is either null or not empty.

Type Parameters:

T - the contained type of the collection

Parameters:

col - the collection to check

Returns:

the same collection

Throws:

IllegalArgumentException - if the provided string is not null and is empty

requireNullOrNonEmpty

public static <T> Collection<T> requireNullOrNonEmpty(Collection<T> col,
                                                      String message)

Checks that the provided collection is either null or not empty.

Type Parameters:

T - the contained type of the collection

Parameters:

col - the collection to check

message - the exception message to use

Returns:

the same collection

Throws:

IllegalArgumentException - if the provided string is not null and is empty