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java.lang.Objectnet.rim.device.api.util.NumberUtilities
public final class NumberUtilities
Utility methods for converting numeric values to their character/string digit equivalents.
| Method Summary | ||
|---|---|---|
static void |
appendNumber(StringBuffer strBuf,
byte num,
int radix)
Appends digits for byte value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
byte num,
int radix,
int minWidth)
Appends digits with padding for byte value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
int num)
Appends digits for decimal integer value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
int num,
int radix)
Appends digits for integer value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
int num,
int radix,
int minWidth)
Appends digits with padding for integer value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
long num)
Appends digits for decimal long integer value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
long num,
int radix)
Appends digits for long integer value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
long num,
int radix,
int minWidth)
Appends digits with padding for long integer value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
short num,
int radix)
Appends digits for short integer value to buffer. |
|
static void |
appendNumber(StringBuffer strBuf,
short num,
int radix,
int minWidth)
Appends digits with padding for short integer value to buffer. |
|
static int |
hexDigitToInt(char dig)
Converts hex digit to integer value. |
|
static int |
hexDigitToInt(char dig,
int err_val)
Converts hex digit to integer value, using provided error value. |
|
static char |
intToHexDigit(int value)
Converts integer value to hex digit. |
|
static char |
intToUpperHexDigit(int value)
Converts integer value to upper case hex digit. |
|
static int |
parseInt(String s,
int fromIndex,
int toIndex,
int radix)
Parses the string argument as a signed integer in the radix specified by the second argument. |
|
static String |
toString(byte num,
int radix)
Retrieves digits for byte value. |
|
static String |
toString(byte num,
int radix,
int minWidth)
Retrieves digits with padding for byte value. |
|
static String |
toString(int num,
int radix)
Retrieves digits for integer value. |
|
static String |
toString(int num,
int radix,
int minWidth)
Retrieves digits with padding for integer value. |
|
static String |
toString(long num,
int radix)
Retrieves digits for long integer value. |
|
static String |
toString(long num,
int radix,
int minWidth)
Retrieves digits with padding for long integer value. |
|
static String |
toString(short num,
int radix)
Retrieves digits for short integer value. |
|
static String |
toString(short num,
int radix,
int minWidth)
Retrieves digits with padding for short integer value. |
|
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
|---|
public static final void appendNumber(StringBuffer strBuf,
byte num,
int radix)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.
public static final void appendNumber(StringBuffer strBuf,
byte num,
int radix,
int minWidth)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static final String toString(byte num,
int radix)
num - Value to convert.radix - Radix for value.
public static final String toString(byte num,
int radix,
int minWidth)
num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static final void appendNumber(StringBuffer strBuf,
short num,
int radix)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.
public static final void appendNumber(StringBuffer strBuf,
short num,
int radix,
int minWidth)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static final String toString(short num,
int radix)
num - Value to convert.radix - Radix for value.
public static final String toString(short num,
int radix,
int minWidth)
num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static final void appendNumber(StringBuffer strBuf,
int num)
strBuf - Buffer to contain result.num - Value to convert.
public static final void appendNumber(StringBuffer strBuf,
int num,
int radix)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.
public static final void appendNumber(StringBuffer strBuf,
int num,
int radix,
int minWidth)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static final String toString(int num,
int radix)
num - Value to convert.radix - Radix for value.
public static final String toString(int num,
int radix,
int minWidth)
num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static final void appendNumber(StringBuffer strBuf,
long num)
strBuf - Buffer to contain result.num - Value to convert.
public static final void appendNumber(StringBuffer strBuf,
long num,
int radix)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.
public static final void appendNumber(StringBuffer strBuf,
long num,
int radix,
int minWidth)
strBuf - Buffer to contain result.num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static final String toString(long num,
int radix)
num - Value to convert.radix - Radix for value.
public static final String toString(long num,
int radix,
int minWidth)
num - Value to convert.radix - Radix for value.minWidth - Pads digits with leading zeros to meet this width.
public static char intToHexDigit(int value)
value - Lowest 4 bits of this value used to create the hex digit.
public static char intToUpperHexDigit(int value)
value - Lowest 4 bits of this value used to create the upper-case
hex digit.
public static int hexDigitToInt(char dig)
throws NumberFormatException
dig - Single hex digit (can be lower or upper-case).
NumberFormatException - If provided digit isn't valid hex digit.
public static int hexDigitToInt(char dig,
int err_val)
dig - Single hex digit (can be lower or upper-case).err_val - Error value to return if provided digit isn't a valid hex
digit.
public static int parseInt(String s,
int fromIndex,
int toIndex,
int radix)
throws NumberFormatException
Character.digit(char, int) returns a
nonnegative value), except that the first character may be an
ASCII minus sign '-' ('\u002d') to
indicate a negative value. The resulting integer value is returned.
An exception of type NumberFormatException is thrown if any of the following situations occurs:
Character.MIN_RADIX or
larger than Character.MAX_RADIX.
Examples:
parseInt("0", 10) returns 0
parseInt("473", 10) returns 473
parseInt("-0", 10) returns 0
parseInt("-FF", 16) returns -255
parseInt("1100110", 2) returns 102
parseInt("2147483647", 10) returns 2147483647
parseInt("-2147483648", 10) returns -2147483648
parseInt("2147483648", 10) throws a NumberFormatException
parseInt("99", 8) throws a NumberFormatException
parseInt("Kona", 10) throws a NumberFormatException
parseInt("Kona", 27) returns 411787
s - the String containing the integer.fromIndex - the index in the string to start parsing at.toIndex - the index in the string to end parsing at.radix - the radix to be used.
NumberFormatException - if the string does not contain a
parsable integer.
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