eecs2030.lab0

Class Range

java.lang.Object

eecs2030.lab0.Range

public class Range
extends Object

A class that represents a range of values on the real number line. A range has two properties: a minimum value and a maximum value. Range objects always ensure that the following class invariant is true:

minimum <= maximum

The constructors of the class are responsible for ensuring that the above class invariant is always true.

Author:

EECS2030 Winter 2019-2020

Constructor Summary

Constructors

Constructor and Description
Range() Create a range with minimum value 0 and a maximum value 100.
Range(double min, double max) Create a range with the specified minimum and maximum values.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj) Compares this Range to the specified Object.
double	getMaximum() Returns the maximum value of the range
double	getMinimum() Returns the minimum value of the range
int	hashCode() Returns a hash code for this range.
String	toString() Returns the string representation of a range.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Range

public Range()

Create a range with minimum value 0 and a maximum value 100.

Range

public Range(double min,
             double max)

Create a range with the specified minimum and maximum values.

Parameters:

min - the minimum value of the range

max - the maximum value of the range

Throws:

IllegalArgumentException - if min is greater than max

Method Detail

getMinimum

public double getMinimum()

Returns the minimum value of the range

Returns:

the minimum value of the range

getMaximum

public double getMaximum()

Returns the maximum value of the range

Returns:

the maximum value of the range

toString

public String toString()

Returns the string representation of a range. The string contains the minimum and maximum values separated by a comma and space all inside of a pair of square brackets. For example, the string

[-3.14, 3.14]

represents the range whose minimum value is -3.14 and whose maximum value is 3.14

Overrides:

toString in class Object

Returns:

a string representation of the range

See Also:

Object.toString()

hashCode

public int hashCode()

Returns a hash code for this range.

Overrides:

hashCode in class Object

Returns:

a hash code for this range

See Also:

Object.hashCode()

equals

public boolean equals(Object obj)

Compares this Range to the specified Object. The result is true if and only if the argument is a Range object having the same minimum and maximum value as this object.

Overrides:

equals in class Object

Parameters:

obj - the object to compare with

Returns:

true if this object is equal to obj; false otherwise

See Also:

Object.equals(java.lang.Object)