Package com.restfb.util

Class StringUtils

java.lang.Object

com.restfb.util.StringUtils

public final class StringUtils
extends Object

A collection of string-handling utility methods.

Since:

1.6

Author:

Mark Allen

Field Summary

Fields

Modifier and Type	Field	Description
static Charset	ENCODING_CHARSET	Default charset to use for encoding/decoding strings.

Method Summary

Modifier and Type	Method	Description
static String	fromInputStream(InputStream inputStream)	Builds and returns a string representation of the given inputStream .
static boolean	isBlank(String string)	Is string blank (null or only whitespace)?
static byte[]	toBytes(String string)	Converts string to a byte array.
static Integer	toInteger(String string)	Returns an Integer representation of the given string, or null if it's not a valid Integer.
static String	toString(byte[] data)	Converts data to a string in ENCODING_CHARSET format.
static String	trimToEmpty(String string)	Returns a trimmed version of string, or an empty string if string is null or the trimmed version is a blank string.
static String	trimToNull(String string)	Returns a trimmed version of string, or null if string is null or the trimmed version is a blank string.

Methods inherited from class java.lang.Object

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

Field Detail

ENCODING_CHARSET

public static final Charset ENCODING_CHARSET

Default charset to use for encoding/decoding strings.

Method Detail

isBlank

public static boolean isBlank(String string)

Is string blank (null or only whitespace)?

Parameters:

string - The string to check.

Returns:

true if string is blank, false otherwise.

trimToNull

public static String trimToNull(String string)

Returns a trimmed version of string, or null if string is null or the trimmed version is a blank string.

Parameters:

string - The string to trim.

Returns:

A trimmed version of string, or null if string is null or the trimmed version is a blank string.

trimToEmpty

public static String trimToEmpty(String string)

Returns a trimmed version of string, or an empty string if string is null or the trimmed version is a blank string.

Parameters:

string - The string to trim.

Returns:

A trimmed version of string, or an empty string if string is null or the trimmed version is a blank string.

toBytes

public static byte[] toBytes(String string)

Converts string to a byte array.

Assumes string is in ENCODING_CHARSET format.

Parameters:

string - The string to convert to a byte array.

Returns:

A byte array representation of string.

Throws:

NullPointerException - If string is null.

IllegalStateException - If unable to convert because the JVM doesn't support ENCODING_CHARSET.

toString

public static String toString(byte[] data)

Converts data to a string in ENCODING_CHARSET format.

Parameters:

data - The data to convert to a string.

Returns:

A string representation of data.

Throws:

NullPointerException - If data is null.

IllegalStateException - If unable to convert because the JVM doesn't support ENCODING_CHARSET.

Since:

1.6.13

fromInputStream

public static String fromInputStream(InputStream inputStream)
                              throws IOException

Builds and returns a string representation of the given inputStream .

Parameters:

inputStream - The stream from which a string representation is built.

Returns:

A string representation of the given inputStream.

Throws:

IOException - If an error occurs while processing the inputStream.

toInteger

public static Integer toInteger(String string)

Returns an Integer representation of the given string, or null if it's not a valid Integer.

Parameters:

string - The string to process.

Returns:

The Integer representation of string, or null if string is null or not a valid Integer.