org.b3log.latke.util

Class Strings

java.lang.Object

org.b3log.latke.util.Strings

public final class Strings
extends Object

String utilities.

Version:

2.0.0.1, Sep 1, 2018

Author:

Liang Ding

Field Summary

Fields

Modifier and Type	Field and Description
static String	LINE_SEPARATOR Line separator.

Method Summary

Modifier and Type	Method and Description
static boolean	contains(String string, String[] strings) Determines whether the specified strings contains the specified string.
static boolean	containsIgnoreCase(String string, String[] strings) Determines whether the specified strings contains the specified string, ignoring case considerations.
static boolean	isEmail(String string) Checks whether the specified string is a valid email address.
static boolean	isInteger(String string) Checks whether the specified string is an integer.
static boolean	isIPv4(String ip) Is IPv4.
static boolean	isNumeric(String string) Checks whether the specified string is numeric.
static boolean	isURL(String string) Determines whether the specified string is a valid URL.
static List<String>	toLines(String string) Converts the specified string into a string list line by line.
static String[]	trimAll(String[] strings) Trims every string in the specified strings array.

Methods inherited from class java.lang.Object

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

Field Detail

LINE_SEPARATOR

public static final String LINE_SEPARATOR

Line separator.

Method Detail

isIPv4

public static boolean isIPv4(String ip)

Is IPv4.

Parameters:

ip - ip

Returns:

true if it is, returns false otherwise

toLines

public static List<String> toLines(String string)
                            throws IOException

Converts the specified string into a string list line by line.

Parameters:

string - the specified string

Returns:

a list of string lines, returns null if the specified string is null

Throws:

IOException - io exception

isNumeric

public static boolean isNumeric(String string)

Checks whether the specified string is numeric.

Parameters:

string - the specified string

Returns:

true if the specified string is numeric, returns false otherwise

isInteger

public static boolean isInteger(String string)

Checks whether the specified string is an integer.

Parameters:

string - the specified string

Returns:

true if the specified string is an integer, returns false otherwise

isEmail

public static boolean isEmail(String string)

Checks whether the specified string is a valid email address.

Parameters:

string - the specified string

Returns:

true if the specified string is a valid email address, returns false otherwise

trimAll

public static String[] trimAll(String[] strings)

Trims every string in the specified strings array.

Parameters:

strings - the specified strings array, returns null if the specified strings is null

Returns:

a trimmed strings array

containsIgnoreCase

public static boolean containsIgnoreCase(String string,
                                         String[] strings)

Determines whether the specified strings contains the specified string, ignoring case considerations.

Parameters:

string - the specified string

strings - the specified strings

Returns:

true if the specified strings contains the specified string, ignoring case considerations, returns false otherwise

contains

public static boolean contains(String string,
                               String[] strings)

Determines whether the specified strings contains the specified string.

Parameters:

string - the specified string

strings - the specified strings

Returns:

true if the specified strings contains the specified string, returns false otherwise

isURL

public static boolean isURL(String string)

Determines whether the specified string is a valid URL.

Parameters:

string - the specified string

Returns:

true if the specified string is a valid URL, returns false otherwise