org.key_project.util.java

Class NumberUtil

java.lang.Object

org.key_project.util.java.NumberUtil

public class NumberUtil
extends java.lang.Object

Provides utility methods to work with numbers.

Author:

Martin Hentschel

Field Summary

Fields

Modifier and Type	Field and Description
static byte	MAX_INT_DIGITS The maximal number of digits of an integer value.
static byte	MAX_LONG_DIGITS The maximal number of digits of a long value.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	NumberUtil() Forbid instances.

Method Summary

Modifier and Type	Method and Description
static char	getAlgebraicSign(int number) Returns the algebraic sign.
static char	getAlgebraicSign(long number) Returns the algebraic sign.
static byte	numberOfDigits(int number) Returns the number of digits of the given number ignoring the algebraic sign (+/-).
static byte	numberOfDigits(long number) Returns the number of digits of the given number ignoring the algebraic sign (+/-).
static int	parseFullInt(java.lang.String text) Parses the given full text.
static long	parseFullLong(java.lang.String text) Parses the given full text.
static java.lang.String	toFullString(int number) Converts the number into a String including the algebraic sign and the maximal number of leading zeros.
static java.lang.String	toFullString(long number) Converts the number into a String including the algebraic sign and the maximal number of leading zeros.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_INT_DIGITS

public static final byte MAX_INT_DIGITS

The maximal number of digits of an integer value.

MAX_LONG_DIGITS

public static final byte MAX_LONG_DIGITS

The maximal number of digits of a long value.

Constructor Detail

NumberUtil

private NumberUtil()

Forbid instances.

Method Detail

toFullString

public static java.lang.String toFullString(int number)

Converts the number into a String including the algebraic sign and the maximal number of leading zeros.

Parameters:

number - The number to convert.

Returns:

The number as full String.

toFullString

public static java.lang.String toFullString(long number)

Converts the number into a String including the algebraic sign and the maximal number of leading zeros.

Parameters:

number - The number to convert.

Returns:

The number as full String.

getAlgebraicSign

public static char getAlgebraicSign(long number)

Returns the algebraic sign.

Parameters:

number - The number.

Returns:

'+' for zero and positive numbers, '-' for negative numbers.

getAlgebraicSign

public static char getAlgebraicSign(int number)

Returns the algebraic sign.

Parameters:

number - The number.

Returns:

'+' for zero and positive numbers, '-' for negative numbers.

numberOfDigits

public static byte numberOfDigits(int number)

Returns the number of digits of the given number ignoring the algebraic sign (+/-).

Parameters:

number - The number to compute the number of its digits.

Returns:

The number.

numberOfDigits

public static byte numberOfDigits(long number)

Returns the number of digits of the given number ignoring the algebraic sign (+/-).

Parameters:

number - The number to compute the number of its digits.

Returns:

The number.

parseFullInt

public static int parseFullInt(java.lang.String text)

Parses the given full text.

Parameters:

text - The full text.

Returns:

The int value.

parseFullLong

public static long parseFullLong(java.lang.String text)

Parses the given full text.

Parameters:

text - The full text.

Returns:

The long value.