info.pppc.base.system.util

Class Comparator

java.lang.Object

info.pppc.base.system.util.Comparator

public final class Comparator
extends java.lang.Object

This class provides helper methods to enable comparisons and type operations on J2ME CLDC configurations. Specifically it allows to transform strings into various types and it enables comparisons between wrapper classes of basic types.

Author:

Marcus Handte

Constructor Summary

Constructors

Constructor and Description
Comparator()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	getBoolean(java.lang.String string) Converts the string representation of a boolean into a boolean.
static boolean	isLess(java.lang.Object o1, java.lang.Object o2) Determines whether the first object is smaller than the second object passed to the method.
static boolean	isLessOrEqual(java.lang.Object o1, java.lang.Object o2) Determines whether the first object is smaller or equal than the second object passed to the method.
static boolean	isMore(java.lang.Object o1, java.lang.Object o2) Determines whether the first object is larger than the second object passed to the method.
static boolean	isMoreOrEqual(java.lang.Object o1, java.lang.Object o2) Determines whether the first object is larger than the second object passed to the method.

Methods inherited from class java.lang.Object

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

Constructor Detail

Comparator

public Comparator()

Method Detail

isLess

public static boolean isLess(java.lang.Object o1,
             java.lang.Object o2)
                      throws java.lang.IllegalArgumentException

Determines whether the first object is smaller than the second object passed to the method. This implementation works with Byte, Short, Integer, Long and String types.

Parameters:

o1 - The first object to compare.

o2 - The second object to compare.

Returns:

True if the first object is smaller than the second object.

Throws:

java.lang.IllegalArgumentException - Thrown if one of the objects is illegal.

isLessOrEqual

public static boolean isLessOrEqual(java.lang.Object o1,
                    java.lang.Object o2)
                             throws java.lang.IllegalArgumentException

Determines whether the first object is smaller or equal than the second object passed to the method. This implementation works with Byte, Short, Integer, Long and String types.

Parameters:

o1 - The first object to compare.

o2 - The second object to compare.

Returns:

True if the first object is smaller than or larger as the second object.

Throws:

java.lang.IllegalArgumentException - Thrown if one of the objects is illegal.

isMore

public static boolean isMore(java.lang.Object o1,
             java.lang.Object o2)
                      throws java.lang.IllegalArgumentException

Determines whether the first object is larger than the second object passed to the method. This implementation works with Byte, Short, Integer, Long and String types.

Parameters:

o1 - The first object to compare.

o2 - The second object to compare.

Returns:

True if the first object is larger than the second object.

Throws:

java.lang.IllegalArgumentException - Thrown if one of the objects is illegal.

isMoreOrEqual

public static boolean isMoreOrEqual(java.lang.Object o1,
                    java.lang.Object o2)
                             throws java.lang.IllegalArgumentException

Determines whether the first object is larger than the second object passed to the method. This implementation works with Byte, Short, Integer, Long and String types.

Parameters:

o1 - The first object to compare.

o2 - The second object to compare.

Returns:

True if the first object is larger than or equal to the second object.

Throws:

java.lang.IllegalArgumentException - Thrown if one of the objects is illegal.

getBoolean

public static boolean getBoolean(java.lang.String string)
                          throws java.lang.IllegalArgumentException

Converts the string representation of a boolean into a boolean.

Parameters:

string - The string representation of the boolean.

Returns:

True if the string representation is a boolean true, false if it is a boolean false.

Throws:

java.lang.IllegalArgumentException - Thrown if the string does not specify a valid boolean representation.