@GwtCompatible
public class StringExtensions
extends java.lang.Object
strings
.Constructor and Description |
---|
StringExtensions() |
Modifier and Type | Method and Description |
---|---|
static boolean |
isNullOrEmpty(java.lang.String s)
Returns
true if s is null or equal to the empty String "" . |
static java.lang.String |
operator_plus(java.lang.String a,
java.lang.Object b)
The binary
+ operator that concatenates a string and the string
reprentation of an object. |
static java.lang.String |
operator_plus(java.lang.String a,
java.lang.String b)
The binary
+ operator that concatenates two strings. |
static java.lang.String |
toFirstLower(java.lang.String s)
Returns the
String s with an lower case first character. |
static java.lang.String |
toFirstUpper(java.lang.String s)
Returns the
String s with an upper case first character. |
@Pure public static java.lang.String operator_plus(java.lang.String a, java.lang.Object b)
+
operator that concatenates a string and the string
reprentation of an object.a
- a string.b
- an object.a + b
@Pure public static java.lang.String operator_plus(java.lang.String a, java.lang.String b)
+
operator that concatenates two strings.a
- a string.b
- another string.a + b
@Pure public static boolean isNullOrEmpty(java.lang.String s)
true
if s
is null
or equal to the empty String
""
.s
- the stringtrue
if s
is null
or equal to the empty String
""
@Pure public static java.lang.String toFirstUpper(java.lang.String s)
String
s
with an upper case
first character. This
function is null-safe.s
- the string that should get an upper case first character. May be null
.String
s
with an upper case first character or null
if the input
String
s
was null
.@Pure public static java.lang.String toFirstLower(java.lang.String s)
String
s
with an lower case
first character. This
function is null-safe.s
- the string that should get an lower case first character. May be null
.String
s
with an lower case first character or null
if the input
String
s
was null
.