@Immutable public class IntegerOperations extends Object implements MathOperations<Integer>, Comparator<Integer>
math operations for integer numbers.| Constructor and Description |
|---|
IntegerOperations() |
| Modifier and Type | Method and Description |
|---|---|
Integer |
add(Integer value1,
Integer value2)
Add the two operands and return the sum.
|
BigDecimal |
asBigDecimal(Integer value)
Create a
BigDecimal representation of the supplied value. |
int |
compare(Integer value1,
Integer value2)
Compare the two operands and return an integer that describes whether the first value is larger, smaller or the same as the
second value.
|
Integer |
create(double value)
Convert the double representation into the natural object representation.
|
Integer |
create(int value)
Convert the integer representation into the natural object representation.
|
Integer |
create(long value)
Convert the long representation into the natural object representation.
|
Integer |
createZeroValue()
Create the object form of the "zero value".
|
double |
divide(Integer value1,
Integer value2)
Divide the first operand by the second, and return the result.
|
double |
doubleValue(Integer value)
Convert the value to a double.
|
float |
floatValue(Integer value)
Convert the value to a float.
|
Integer |
fromBigDecimal(BigDecimal value)
Convert the
BigDecimal representation into the natural object representation. |
Comparator<Integer> |
getComparator()
Return a
Comparator for this operand class. |
int |
getExponentInScientificNotation(Integer value)
Get the exponent if the number were written in exponential form.
|
Class<Integer> |
getOperandClass()
Return the class that these operations operate upon.
|
Integer |
increment(Integer value)
Increment the supplied operand by 1.
|
int |
intValue(Integer value)
Convert the value to an integer.
|
Integer |
keepSignificantFigures(Integer value,
int numSigFigs) |
long |
longValue(Integer value)
Convert the value to a long integer.
|
Integer |
maximum(Integer value1,
Integer value2)
Compare the two operands and return the one that is larger.
|
Integer |
minimum(Integer value1,
Integer value2)
Compare the two operands and return the one that is smaller.
|
Integer |
multiply(Integer value1,
Integer value2)
Multiply the two operands and return the product.
|
Integer |
negate(Integer value)
Negate the supplied operand.
|
Integer |
random(Integer minimum,
Integer maximum,
Random rng)
Generate a random instance within the specified range.
|
Integer |
roundDown(Integer value,
int decimalShift)
Round down the supplied value to the desired scale.
|
Integer |
roundUp(Integer value,
int decimalShift)
Round up the supplied value to the desired scale.
|
short |
shortValue(Integer value)
Convert the value to a short.
|
double |
sqrt(Integer value)
Return the square root of the supplied operand.
|
Integer |
subtract(Integer value1,
Integer value2)
Subtract the second operand from the first, and return the difference.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitequalspublic Class<Integer> getOperandClass()
MathOperationsgetOperandClass in interface MathOperations<Integer>public Integer add(Integer value1, Integer value2)
MathOperationszero value is used in place of any operand that is
null.add in interface MathOperations<Integer>value1 - the first operandvalue2 - the second operandpublic Integer subtract(Integer value1, Integer value2)
MathOperationszero value is used in
place of any operand that is null.subtract in interface MathOperations<Integer>value1 - the first operandvalue2 - the second operandpublic Integer multiply(Integer value1, Integer value2)
MathOperationszero value is used in place of any operand
that is null.multiply in interface MathOperations<Integer>value1 - the first operandvalue2 - the second operandpublic double divide(Integer value1, Integer value2)
MathOperationszero value is used in place
of any operand that is null.divide in interface MathOperations<Integer>value1 - the first operandvalue2 - the second operandpublic Integer negate(Integer value)
MathOperationszero value is used in place of any operand that is null.negate in interface MathOperations<Integer>value - the value that is to be negatedpublic Integer increment(Integer value)
MathOperationsoperand class. The zero value is used in place of any operand that is
null.increment in interface MathOperations<Integer>value - the value that is to be incrementedpublic Integer maximum(Integer value1, Integer value2)
MathOperationsmaximum in interface MathOperations<Integer>value1 - the first operandvalue2 - the second operandpublic Integer minimum(Integer value1, Integer value2)
MathOperationsminimum in interface MathOperations<Integer>value1 - the first operandvalue2 - the second operandpublic int compare(Integer value1, Integer value2)
MathOperationsComparable. The zero value is used
in place of any operand that is null.compare in interface Comparator<Integer>compare in interface MathOperations<Integer>value1 - the first operandvalue2 - the second operandpublic BigDecimal asBigDecimal(Integer value)
MathOperationsBigDecimal representation of the supplied value.asBigDecimal in interface MathOperations<Integer>value - the value that is to be converted to a BigDecimalvalue is nullpublic Integer fromBigDecimal(BigDecimal value)
MathOperationsBigDecimal representation into the natural object representation. This may result in loss of some data
(e.g., converting a decimal to an integer results in the loss of the fractional part of the number).fromBigDecimal in interface MathOperations<Integer>value - the BigDecimal valuevalue is nullpublic Integer createZeroValue()
MathOperationscreateZeroValue in interface MathOperations<Integer>public Integer create(int value)
MathOperationscreate in interface MathOperations<Integer>value - the integer valuepublic Integer create(long value)
MathOperationscreate in interface MathOperations<Integer>value - the long valuepublic Integer create(double value)
MathOperationscreate in interface MathOperations<Integer>value - the double valuepublic double sqrt(Integer value)
MathOperationssqrt in interface MathOperations<Integer>value - the value whose root is to be found; may not be null or 0public Comparator<Integer> getComparator()
MathOperationsComparator for this operand class. The implementation is free to
return the same comparator instance from multiple invocations of this method.getComparator in interface MathOperations<Integer>public Integer random(Integer minimum, Integer maximum, Random rng)
MathOperationsrandom in interface MathOperations<Integer>minimum - the minimum value, or null if the zero-value should be used for the minimummaximum - the maximum value, or null if the zero-value should be used for the maximumrng - the random number generator to useoperand class placed within the desired range using a random
distribution, or null if this class does not support generating random instancespublic double doubleValue(Integer value)
MathOperationsoperand class.doubleValue in interface MathOperations<Integer>value - the valuepublic float floatValue(Integer value)
MathOperationsoperand
class.floatValue in interface MathOperations<Integer>value - the valuepublic int intValue(Integer value)
MathOperationsoperand class.intValue in interface MathOperations<Integer>value - the valuepublic long longValue(Integer value)
MathOperationsoperand class.longValue in interface MathOperations<Integer>value - the valuepublic short shortValue(Integer value)
MathOperationsoperand
class.shortValue in interface MathOperations<Integer>value - the valuepublic int getExponentInScientificNotation(Integer value)
MathOperationsgetExponentInScientificNotation in interface MathOperations<Integer>value - the valuepublic Integer roundUp(Integer value, int decimalShift)
MathOperationsdecimalShift places, rounding, and then shifting the decimal point of the rounded value by
-decimalShift
For example, consider the number 10.000354. This can be rounded to 10.0004 by calling this method and supplying the value and an "exponentToKeep" value of -4.
roundUp in interface MathOperations<Integer>value - the value to be roundeddecimalShift - the number of places the decimal point should be shifted before roundingpublic Integer roundDown(Integer value, int decimalShift)
MathOperationsdecimalShift places, rounding, and then shifting the decimal point of the rounded value by
-decimalShift
For example, consider the number 10.000354. This can be rounded to 10.0003 by calling this method and supplying the value and an "exponentToKeep" value of -4.
roundDown in interface MathOperations<Integer>value - the value to be roundeddecimalShift - the number of places the decimal point should be shifted before roundingpublic Integer keepSignificantFigures(Integer value, int numSigFigs)
keepSignificantFigures in interface MathOperations<Integer>Copyright © 2008-2014 JBoss, a division of Red Hat. All Rights Reserved.