public final class Preconditions extends Object
Modifier and Type | Field and Description |
---|---|
static String |
ARGUMENT_EMPTY |
Modifier and Type | Method and Description |
---|---|
static <T> T |
checkNotNull(T reference)
Verifies that the given object reference is not
null . |
static <T> T |
checkNotNull(T reference,
String message)
Verifies that the given object reference is not
null . |
static String |
checkNotNullOrEmpty(String s)
Verifies that the given
String is not null or empty. |
static String |
checkNotNullOrEmpty(String s,
String message)
Verifies that the given
String is not null or empty. |
static <T> T[] |
checkNotNullOrEmpty(T[] array)
Verifies that the given array is not
null or empty. |
public static final String ARGUMENT_EMPTY
public static String checkNotNullOrEmpty(String s)
String
is not null
or empty.s
- the given String
.String
.NullPointerException
- if the given String
is null
.IllegalArgumentException
- if the given String
is empty.public static String checkNotNullOrEmpty(String s, String message)
String
is not null
or empty.s
- the given String
.message
- error message in case of empty String
.String
.NullPointerException
- if the given String
is null
.IllegalArgumentException
- if the given String
is empty.public static <T> T[] checkNotNullOrEmpty(T[] array)
null
or empty.array
- the given array.NullPointerException
- if the given array is null
.IllegalArgumentException
- if the given array is empty.public static <T> T checkNotNull(T reference)
null
.reference
- the given object reference.null
reference that was validated.NullPointerException
- if the given object reference is null
.public static <T> T checkNotNull(T reference, String message)
null
.reference
- the given object reference.message
- error message in case of null reference.null
reference that was validated.NullPointerException
- if the given object reference is null
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