public class Utilities extends Object
Constructor and Description |
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Utilities() |
Modifier and Type | Method and Description |
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static Object[][] |
addToArray(Object[][] original, Object[] item)
Utility method to extend an array.
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static boolean |
checkTrueOrFalse(Properties attributes, String key)
Checks for a true/false value of a key in a Properties object.
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static String |
convertFromUtf32(int codePoint)
Converts a UTF32 code point value to a String with the corresponding character(s).
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static String |
convertToHex(byte[] bytes)
Converts an array of bytes to a String of hexadecimal values
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static int |
convertToUtf32(char[] text, int idx)
Converts a unicode character in a character array to a UTF 32 code point value.
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static int |
convertToUtf32(char highSurrogate, char lowSurrogate)
Returns the code point of a UTF32 character corresponding with a high and a low surrogate value.
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static int |
convertToUtf32(String text, int idx)
Converts a unicode character in a String to a UTF32 code point value
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static char[] |
copyOfRange(char[] original, int from, int to)
Copies the specified range of the specified array into a new array.
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static |
getKeySet(Hashtable
Deprecated.
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static float |
inchesToMillimeters(float value)
Measurement conversion from inches to millimeters.
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static float |
inchesToPoints(float value)
Measurement conversion from inches to points.
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static boolean |
isSurrogateHigh(char c)
Check if the value of a character belongs to a certain interval that indicates it's the higher part of a surrogate pair.
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static boolean |
isSurrogateLow(char c)
Check if the value of a character belongs to a certain interval that indicates it's the lower part of a surrogate pair.
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static boolean |
isSurrogatePair(char[] text, int idx)
Checks if two subsequent characters in a character array are are the higher and the lower character in a surrogate pair (and therefore eligible for conversion to a UTF 32 character).
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static boolean |
isSurrogatePair(String text, int idx)
Checks if two subsequent characters in a String are are the higher and the lower character in a surrogate pair (and therefore eligible for conversion to a UTF 32 character).
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static float |
millimetersToInches(float value)
Measurement conversion from millimeters to inches.
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static float |
millimetersToPoints(float value)
Measurement conversion from millimeters to points.
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static float |
pointsToInches(float value)
Measurement conversion from points to inches.
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static float |
pointsToMillimeters(float value)
Measurement conversion from points to millimeters.
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static String |
readFileToString(File file)
Reads the contents of a file to a String.
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static String |
readFileToString(String path)
Reads the contents of a file to a String.
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static void |
skip(InputStream is, int size)
This method is an alternative for the InputStream.skip() -method that doesn't seem to work properly for big values of size .
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static URL |
toURL(String filename)
This method makes a valid URL from a given filename.
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static String |
unEscapeURL(String src)
Unescapes an URL.
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@Deprecated public staticSet getKeySet(Hashtable table)
K
- type for the key
V
- type for the value
table
- a Hashtable
public static Object[][] addToArray(Object[][] original, Object[] item)
original
- the original array or null
item
- the item to be added to the array
public static boolean checkTrueOrFalse(Properties attributes, String key)
attributes
-
key
-
public static String unEscapeURL(String src)
src
- the url to unescape
public static URL toURL(String filename) throws MalformedURLException
This method makes the conversion of this library from the JAVA 2 platform to a JDK1.1.x-version easier.
filename
- a given filename
MalformedURLException
public static void skip(InputStream is, int size) throws IOException
InputStream.skip()
-method that doesn't seem to work properly for big values of size
.
is
- the InputStream
size
- the number of bytes to skip
IOException
public static final float millimetersToPoints(float value)
value
- a value in millimeters
public static final float millimetersToInches(float value)
value
- a value in millimeters
public static final float pointsToMillimeters(float value)
value
- a value in points
public static final float pointsToInches(float value)
value
- a value in points
public static final float inchesToMillimeters(float value)
value
- a value in inches
public static final float inchesToPoints(float value)
value
- a value in inches
public static boolean isSurrogateHigh(char c)
c
- the character
public static boolean isSurrogateLow(char c)
c
- the character
public static boolean isSurrogatePair(String text, int idx)
text
- the String with the high and low surrogate characters
idx
- the index of the 'high' character in the pair
public static boolean isSurrogatePair(char[] text, int idx)
text
- the character array with the high and low surrogate characters
idx
- the index of the 'high' character in the pair
public static int convertToUtf32(char highSurrogate, char lowSurrogate)
highSurrogate
- the high surrogate value
lowSurrogate
- the low surrogate value
public static int convertToUtf32(char[] text, int idx)
text
- a character array that has the unicode character(s)
idx
- the index of the 'high' character
public static int convertToUtf32(String text, int idx)
text
- a String that has the unicode character(s)
idx
- the index of the 'high' character
public static String convertFromUtf32(int codePoint)
codePoint
- a Unicode value
public static String readFileToString(String path) throws IOException
path
- the path to the file
IOException
public static String readFileToString(File file) throws IOException
file
- a file
IOException
- if file was not found or could not be read.
public static String convertToHex(byte[] bytes)
bytes
- a byte array
public static char[] copyOfRange(char[] original, int from, int to)
original
- the array from which a range is to be copied
from
- the initial index of the range to be copied, inclusive
to
- the final index of the range to be copied, exclusive. (This index may lie outside the array.)
ArrayIndexOutOfBoundsException
- if from < 0
or from > original.length
IllegalArgumentException
- if from > to
NullPointerException
- if original is null
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