net.lecousin.framework.util

Class StringUtil

java.lang.Object

net.lecousin.framework.util.StringUtil

public final class StringUtil
extends Object

Utility methods for String.

Method Summary

Modifier and Type	Method and Description
static int	count(String string, String toSearch) Count the number of occurences.
static int	decodeHexa(char c) Return the integer value of the given hexadecimal digit, or -1 if it is not an hexadecimal digit.
static byte[]	decodeHexa(String s) Decode a string containing hexadecimal digits into an array of bytes.
static void	decodeHexa(String s, byte[] data) Decode a string containing hexadecimal digits into the given array of bytes.
static byte	decodeHexaByte(String hexa) Decode the given hexadecimal string into a byte (the string must contain 1 or 2 hexa digits).
static long	decodeHexaLong(String hexa) Decode the given string containing hexadecimal digits into a long value.
static String	duration(long ms) Create a string for the given duration.
static String	encodeHexa(byte b) Encode the given byte into hexadecimal.
static String	encodeHexa(byte[] data) Encode the given bytes into hexadecimal.
static String	encodeHexa(byte[] data, int off, int len) Encode the given bytes into hexadecimal.
static char	encodeHexaDigit(int value) Encode a single hexadecimal digit (given value must be between 0 and 15).
static String	encodeHexaPadding(long value) Encode a long value into hexadecimal, padding with zeros to create a string of 16 characters.
static boolean	isHexa(char c)
static StringBuilder	paddingLeft(StringBuilder s, int length, char padding) Insert padding character to a StringBuilder.
static StringBuilder	paddingLeft(StringBuilder s, long value, int fixedSize) Convert the long to a string and append spaces up to the given fixed size.
static StringBuilder	paddingLeft(StringBuilder to, String s, int length, char padding) Add the string and insert padding character to a StringBuilder.
static StringBuilder	paddingRight(StringBuilder s, int length, char padding) Append padding character until the StringBuilder has the given length.
static StringBuilder	paddingRight(StringBuilder s, long value, int fixedSize) Convert the long to a string and append spaces up to the given fixed size.
static StringBuilder	paddingRight(StringBuilder to, String s, int nb, char padding) Append padding character until the StringBuilder has the given length.
static long	parseSize(String s) Parse the given string containing a size with a unit (B for bytes, K for KB...).
static String	possibleValues(Class<? extends Enum<?>> e) Create a string containing all enumeration values separated by a comma, for printing or debugging purpose.
static String	size(BigInteger s) Create a string for the given size, expressed in bytes or KB or MB or GB or TB, with 2 decimals.
static String	size(long size) Create a string for the given size, expressed in bytes or KB or MB or GB or TB, with 2 decimals.
static String	size(Number size) Create a string for the given size, expressed in bytes or KB or MB or GB or TB, with 2 decimals.

Methods inherited from class java.lang.Object

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

Method Detail

paddingLeft

public static StringBuilder paddingLeft(StringBuilder s,
                                        int length,
                                        char padding)

Insert padding character to a StringBuilder.

paddingLeft

public static StringBuilder paddingLeft(StringBuilder to,
                                        String s,
                                        int length,
                                        char padding)

Add the string and insert padding character to a StringBuilder.

paddingLeft

public static StringBuilder paddingLeft(StringBuilder s,
                                        long value,
                                        int fixedSize)

Convert the long to a string and append spaces up to the given fixed size.

paddingRight

public static StringBuilder paddingRight(StringBuilder s,
                                         int length,
                                         char padding)

Append padding character until the StringBuilder has the given length.

paddingRight

public static StringBuilder paddingRight(StringBuilder to,
                                         String s,
                                         int nb,
                                         char padding)

Append padding character until the StringBuilder has the given length.

paddingRight

public static StringBuilder paddingRight(StringBuilder s,
                                         long value,
                                         int fixedSize)

Convert the long to a string and append spaces up to the given fixed size.

encodeHexaDigit

public static char encodeHexaDigit(int value)

Encode a single hexadecimal digit (given value must be between 0 and 15).

encodeHexa

public static String encodeHexa(byte[] data)

Encode the given bytes into hexadecimal.

encodeHexa

public static String encodeHexa(byte[] data,
                                int off,
                                int len)

Encode the given bytes into hexadecimal.

encodeHexa

public static String encodeHexa(byte b)

Encode the given byte into hexadecimal.

encodeHexaPadding

public static String encodeHexaPadding(long value)

Encode a long value into hexadecimal, padding with zeros to create a string of 16 characters.

decodeHexa

public static byte[] decodeHexa(String s)

Decode a string containing hexadecimal digits into an array of bytes.

decodeHexa

public static void decodeHexa(String s,
                              byte[] data)

Decode a string containing hexadecimal digits into the given array of bytes.

decodeHexa

public static int decodeHexa(char c)

Return the integer value of the given hexadecimal digit, or -1 if it is not an hexadecimal digit.

decodeHexaByte

public static byte decodeHexaByte(String hexa)

Decode the given hexadecimal string into a byte (the string must contain 1 or 2 hexa digits).

decodeHexaLong

public static long decodeHexaLong(String hexa)

Decode the given string containing hexadecimal digits into a long value.

isHexa

public static boolean isHexa(char c)

possibleValues

public static String possibleValues(Class<? extends Enum<?>> e)

Create a string containing all enumeration values separated by a comma, for printing or debugging purpose.

size

public static String size(long size)

Create a string for the given size, expressed in bytes or KB or MB or GB or TB, with 2 decimals.

size

public static String size(Number size)

Create a string for the given size, expressed in bytes or KB or MB or GB or TB, with 2 decimals.

size

public static String size(BigInteger s)

Create a string for the given size, expressed in bytes or KB or MB or GB or TB, with 2 decimals.

parseSize

public static long parseSize(String s)
                      throws ParseException

Parse the given string containing a size with a unit (B for bytes, K for KB...).

Throws:

ParseException

duration

public static String duration(long ms)

Create a string for the given duration.

count

public static int count(String string,
                        String toSearch)

Count the number of occurences.