Module com.pi4j

Package com.pi4j.util

Class StringUtil

java.lang.Object

com.pi4j.util.StringUtil

public class StringUtil
extends Object

StringUtil class.

Version:

$Id: $Id

Author:

Robert Savage (http://www.savagehomeautomation.com)

Field Summary

Fields

Modifier and Type	Field	Description
static final char	DEFAULT_PAD_CHAR	Constant DEFAULT_PAD_CHAR=' '
static final String	EMPTY	Constant EMPTY=""

Constructor Summary

Constructors

Constructor	Description
StringUtil()

Method Summary

Modifier and Type	Method	Description
static void	appendHexString(StringBuilder builder, byte byt)	appendHexString.
static void	appendHexString(StringBuilder builder, byte[] bytes)	appendHexString.
static void	appendHexString(StringBuilder builder, byte[] bytes, int offset, int length)	appendHexString.
static void	appendHexString(StringBuilder builder, int byt)	appendHexString.
static void	appendHexString(StringBuilder builder, CharSequence data)	appendHexString.
static void	appendHexString(StringBuilder builder, CharSequence data, Charset charset)	appendHexString.
static void	appendHexString(StringBuilder builder, ByteBuffer buffer)	appendHexString.
static void	appendHexString(StringBuilder builder, ByteBuffer buffer, int offset, int length)	appendHexString.
static String	center(String text, int length)	center.
static String	concat(String... data)	concat.
static boolean	contains(String[] sources, String target)	contains.
static boolean	contains(String[] sources, String[] targets)	contains.
static boolean	contains(String source, String target)	contains.
static boolean	contains(String source, String[] targets)	contains.
static String	create(char c, int length)	create.
static String	create(int length)	create.
static String	create(String s, int length)	create.
static boolean	isNotNullOrEmpty(String data)	isNotNullOrEmpty.
static boolean	isNotNullOrEmpty(String data, boolean trim)	isNotNullOrEmpty.
static boolean	isNullOrEmpty(String data)	isNullOrEmpty.
static boolean	isNullOrEmpty(String data, boolean trim)	isNullOrEmpty.
static boolean	isNumeric(String str)	isNumeric.
static String	pad(String data, char pad, int length)	pad.
static String	pad(String data, int length)	pad.
static String	pad(String data, String pad, int length)	pad.
static String	padCenter(String data, char pad, int length)	padCenter.
static String	padCenter(String data, int length)	padCenter.
static String	padLeft(String data, char pad, int length)	padLeft.
static String	padLeft(String data, int length)	padLeft.
static String	padLeft(String data, String pad, int length)	padLeft.
static String	padRight(String data, char pad, int length)	padRight.
static String	padRight(String data, int length)	padRight.
static String	padRight(String data, String pad, int length)	padRight.
static int	parseInteger(String str, Integer defaultValue)	parseInteger.
static long	parseLong(String str, Long defaultValue)	parseLong.
static String	repeat(char c, int length)	repeat.
static String	repeat(String s, int length)	repeat.
static String	setIfNullOrEmpty(String data, String replacement)	setIfNullOrEmpty.
static String	setIfNullOrEmpty(String data, String replacement, boolean trim)	setIfNullOrEmpty.
static String	toHexString(byte byt)	toHexString.
static String	toHexString(byte[] bytes)	toHexString.
static String	toHexString(byte[] bytes, int offset, int length)	toHexString.
static String	toHexString(int byt)	toHexString.
static String	toHexString(CharSequence data)	toHexString.
static String	toHexString(CharSequence data, Charset charset)	toHexString.
static String	toHexString(ByteBuffer buffer)	toHexString.
static String	toHexString(ByteBuffer buffer, int offset, int length)	toHexString.
static String	trim(String data)	trim.
static String	trim(String data, char trim)	trim.
static String	trimLeft(String data)	trimLeft.
static String	trimLeft(String data, char trim)	trimLeft.
static String	trimRight(String data)	trimRight.
static String	trimRight(String data, char trim)	trimRight.

Methods inherited from class java.lang.Object

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

Field Details

EMPTY

public static final String EMPTY

Constant EMPTY=""

See Also:

• Constant Field Values

DEFAULT_PAD_CHAR

public static final char DEFAULT_PAD_CHAR

Constant DEFAULT_PAD_CHAR=' '

See Also:

• Constant Field Values

Constructor Details

StringUtil

public StringUtil()

Method Details

isNullOrEmpty

public static boolean isNullOrEmpty(String data,
 boolean trim)

isNullOrEmpty.

Parameters:

data - a String object.

trim - a boolean.

Returns:

a boolean.

isNullOrEmpty

public static boolean isNullOrEmpty(String data)

isNullOrEmpty.

Parameters:

data - a String object.

Returns:

a boolean.

isNotNullOrEmpty

public static boolean isNotNullOrEmpty(String data)

isNotNullOrEmpty.

Parameters:

data - a String object.

Returns:

a boolean.

isNotNullOrEmpty

public static boolean isNotNullOrEmpty(String data,
 boolean trim)

isNotNullOrEmpty.

Parameters:

data - a String object.

trim - a boolean.

Returns:

a boolean.

setIfNullOrEmpty

public static String setIfNullOrEmpty(String data,
 String replacement,
 boolean trim)

setIfNullOrEmpty.

Parameters:

data - a String object.

replacement - a String object.

trim - a boolean.

Returns:

a String object.

setIfNullOrEmpty

public static String setIfNullOrEmpty(String data,
 String replacement)

setIfNullOrEmpty.

Parameters:

data - a String object.

replacement - a String object.

Returns:

a String object.

contains

public static boolean contains(String source,
 String target)

contains.

Parameters:

source - a String object.

target - a String object.

Returns:

a boolean.

contains

public static boolean contains(String source,
 String[] targets)

contains.

Parameters:

source - a String object.

targets - an array of String objects.

Returns:

a boolean.

contains

public static boolean contains(String[] sources,
 String target)

contains.

Parameters:

sources - an array of String objects.

target - a String object.

Returns:

a boolean.

contains

public static boolean contains(String[] sources,
 String[] targets)

contains.

Parameters:

sources - an array of String objects.

targets - an array of String objects.

Returns:

a boolean.

create

public static String create(int length)

create.

Parameters:

length - a int.

Returns:

a String object.

create

public static String create(char c,
 int length)

create.

Parameters:

c - a char.

length - a int.

Returns:

a String object.

create

public static String create(String s,
 int length)

create.

Parameters:

s - a String object.

length - a int.

Returns:

a String object.

repeat

public static String repeat(char c,
 int length)

repeat.

Parameters:

c - a char.

length - a int.

Returns:

a String object.

repeat

public static String repeat(String s,
 int length)

repeat.

Parameters:

s - a String object.

length - a int.

Returns:

a String object.

padLeft

public static String padLeft(String data,
 int length)

padLeft.

Parameters:

data - a String object.

length - a int.

Returns:

a String object.

padLeft

public static String padLeft(String data,
 char pad,
 int length)

padLeft.

Parameters:

data - a String object.

pad - a char.

length - a int.

Returns:

a String object.

padLeft

public static String padLeft(String data,
 String pad,
 int length)

padLeft.

Parameters:

data - a String object.

pad - a String object.

length - a int.

Returns:

a String object.

padRight

public static String padRight(String data,
 int length)

padRight.

Parameters:

data - a String object.

length - a int.

Returns:

a String object.

padRight

public static String padRight(String data,
 char pad,
 int length)

padRight.

Parameters:

data - a String object.

pad - a char.

length - a int.

Returns:

a String object.

padRight

public static String padRight(String data,
 String pad,
 int length)

padRight.

Parameters:

data - a String object.

pad - a String object.

length - a int.

Returns:

a String object.

pad

public static String pad(String data,
 int length)

pad.

Parameters:

data - a String object.

length - a int.

Returns:

a String object.

pad

public static String pad(String data,
 char pad,
 int length)

pad.

Parameters:

data - a String object.

pad - a char.

length - a int.

Returns:

a String object.

pad

public static String pad(String data,
 String pad,
 int length)

pad.

Parameters:

data - a String object.

pad - a String object.

length - a int.

Returns:

a String object.

padCenter

public static String padCenter(String data,
 int length)

padCenter.

Parameters:

data - a String object.

length - a int.

Returns:

a String object.

padCenter

public static String padCenter(String data,
 char pad,
 int length)

padCenter.

Parameters:

data - a String object.

pad - a char.

length - a int.

Returns:

a String object.

trimLeft

public static String trimLeft(String data)

trimLeft.

Parameters:

data - a String object.

Returns:

a String object.

trimLeft

public static String trimLeft(String data,
 char trim)

trimLeft.

Parameters:

data - a String object.

trim - a char.

Returns:

a String object.

trimRight

public static String trimRight(String data)

trimRight.

Parameters:

data - a String object.

Returns:

a String object.

trimRight

public static String trimRight(String data,
 char trim)

trimRight.

Parameters:

data - a String object.

trim - a char.

Returns:

a String object.

trim

public static String trim(String data)

trim.

Parameters:

data - a String object.

Returns:

a String object.

trim

public static String trim(String data,
 char trim)

trim.

Parameters:

data - a String object.

trim - a char.

Returns:

a String object.

center

public static String center(String text,
 int length)

center.

Parameters:

text - a String object.

length - a int.

Returns:

a String object.

concat

public static String concat(String... data)

concat.

Parameters:

data - a String object.

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 byte byt)

appendHexString.

Parameters:

builder - a StringBuilder object.

byt - a byte.

toHexString

public static String toHexString(byte byt)

toHexString.

Parameters:

byt - a byte.

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 int byt)

appendHexString.

Parameters:

builder - a StringBuilder object.

byt - a int.

toHexString

public static String toHexString(int byt)

toHexString.

Parameters:

byt - a int.

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 byte[] bytes)

appendHexString.

Parameters:

builder - a StringBuilder object.

bytes - an array of byte objects.

toHexString

public static String toHexString(CharSequence data)

toHexString.

Parameters:

data - a CharSequence object.

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 CharSequence data)

appendHexString.

Parameters:

builder - a StringBuilder object.

data - a CharSequence object.

toHexString

public static String toHexString(CharSequence data,
 Charset charset)

toHexString.

Parameters:

data - a CharSequence object.

charset - character set used to decode string to bytes

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 CharSequence data,
 Charset charset)

appendHexString.

Parameters:

builder - a StringBuilder object.

data - a CharSequence object.

charset - character set used to decode string to bytes

toHexString

public static String toHexString(byte[] bytes)

toHexString.

Parameters:

bytes - an array of byte objects.

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 ByteBuffer buffer)

appendHexString.

Parameters:

builder - a StringBuilder object.

buffer - a ByteBuffer object.

toHexString

public static String toHexString(ByteBuffer buffer)

toHexString.

Parameters:

buffer - a ByteBuffer object.

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 byte[] bytes,
 int offset,
 int length)

appendHexString.

Parameters:

builder - a StringBuilder object.

bytes - an array of byte objects.

offset - a int.

length - a int.

toHexString

public static String toHexString(byte[] bytes,
 int offset,
 int length)

toHexString.

Parameters:

bytes - an array of byte objects.

offset - a int.

length - a int.

Returns:

a String object.

appendHexString

public static void appendHexString(StringBuilder builder,
 ByteBuffer buffer,
 int offset,
 int length)

appendHexString.

Parameters:

builder - a StringBuilder object.

buffer - a ByteBuffer object.

offset - a int.

length - a int.

toHexString

public static String toHexString(ByteBuffer buffer,
 int offset,
 int length)

toHexString.

Parameters:

buffer - a ByteBuffer object.

offset - a int.

length - a int.

Returns:

a String object.

isNumeric

public static boolean isNumeric(String str)

isNumeric.

Parameters:

str - a String object.

Returns:

a boolean.

parseInteger

public static int parseInteger(String str,
 Integer defaultValue)

parseInteger.

Parameters:

str - a String object.

defaultValue - a Integer object.

Returns:

a int.

parseLong

public static long parseLong(String str,
 Long defaultValue)

parseLong.

Parameters:

str - a String object.

defaultValue - a Long object.

Returns:

a int.