Package biz.onixs.util

Class Utils

java.lang.Object

biz.onixs.util.Utils

public class Utils
extends Object

Utility class containing various helper methods.

Field Summary

Fields

Modifier and Type	Field	Description
static String	UNSAFE_CHARACTERS	Regular expression for unsafe characters.
static String	WHITE_SPACE	White space characters.

Method Summary

Modifier and Type	Method	Description
static String	ensureCanonicalName(String fileName)	Ensures that the given file name is in a canonical form by replacing unsafe characters with underscores.
static String	humanReadableByteCount(long bytes)	Converts a bytes number to a human-readable string representation.
static boolean	isStringEmpty(String s)	Checks if the given string is empty or null.
static byte[]	subArray(byte[] source, int length)	Creates a sub-array from the given source array up to the specified length.
static byte[]	subArray(byte[] source, int offset, int length)	Creates a sub-array from the given source array starting at the specified offset and up to the specified length.
static String	systemProperties2String()	Converts system properties to a string representation.
static String	trimWhiteSpace(String value)	Trims leading and trailing white space from the given string.
static void	waitForEnter()	Waits for the user to press Enter.
static void	waitForEnter(String message)	Waits for the user to press Enter and displays a custom message.
static void	waitForEnterToTerminateApp()	Waits for the user to press Enter and displays a termination message.

Methods inherited from class java.lang.Object

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

Field Detail

UNSAFE_CHARACTERS

public static final String UNSAFE_CHARACTERS

Regular expression for unsafe characters.

See Also:

Constant Field Values

WHITE_SPACE

public static final String WHITE_SPACE

White space characters.

See Also:

Constant Field Values

Method Detail

subArray

public static byte[] subArray(byte[] source,
                              int length)

Creates a sub-array from the given source array up to the specified length.

Parameters:

source - The source byte array.

length - The length of the sub-array.

Returns:

A new byte array containing the sub-array.

subArray

public static byte[] subArray(byte[] source,
                              int offset,
                              int length)

Creates a sub-array from the given source array starting at the specified offset and up to the specified length.

Parameters:

source - The source byte array.

offset - The starting index of the sub-array.

length - The length of the sub-array.

Returns:

A new byte array containing the sub-array.

systemProperties2String

public static String systemProperties2String()

Converts system properties to a string representation.

Returns:

A string containing the system properties.

waitForEnter

public static void waitForEnter()

Waits for the user to press Enter.

waitForEnterToTerminateApp

public static void waitForEnterToTerminateApp()

Waits for the user to press Enter and displays a termination message.

waitForEnter

public static void waitForEnter(String message)

Waits for the user to press Enter and displays a custom message.

Parameters:

message - The message to display before waiting for Enter.

isStringEmpty

public static boolean isStringEmpty(String s)

Checks if the given string is empty or null.

Parameters:

s - The string to check.

Returns:

true if the string is empty or null, false otherwise.

trimWhiteSpace

public static String trimWhiteSpace(String value)

Trims leading and trailing white space from the given string.

Parameters:

value - The string to trim.

Returns:

A new string with leading and trailing white space removed.

humanReadableByteCount

public static String humanReadableByteCount(long bytes)

Converts a bytes number to a human-readable string representation.

Parameters:

bytes - The number of bytes to convert.

Returns:

A string containing the human-readable representation of the number of bytes.

ensureCanonicalName

public static String ensureCanonicalName(String fileName)

Ensures that the given file name is in a canonical form by replacing unsafe characters with underscores.

Parameters:

fileName - The file name to be converted.

Returns:

A new string with all unsafe characters replaced by underscores.