Two classpath locations are equal if they will load themselves in the same manner.
Each classpath location has an identifier which should uniquely identify the location. It is recommended that it is a hash of some input, or other uniquely identifying function is performed to derive it.
It is strongly recommended that classpath locations are RMI transferrable.
Checks if this object represents the same classpath location as the parameter.
Gets the unique identifier for the classpath location.
Creates a new classpath loader which is able to load the specified classpath to a given location.
Returns a hash code value for the object.
Indicates whether some other object is "equal to" this one.
equals method implements an equivalence relation on non-null object references:
- It is reflexive: for any non-null reference value
- It is symmetric: for any non-null reference values
trueif and only if
- It is transitive: for any non-null reference values
- It is consistent: for any non-null reference values
y, multiple invocations of
trueor consistently return
false, provided no information used in
equalscomparisons on the objects is modified.
- For any non-null reference value
equals method for class
Object implements the most discriminating possible equivalence
relation on objects; that is, for any non-null reference values
y, this method returns
true if and only if
y refer to the same object (
x == y has the value
Note that it is generally necessary to override the
hashCode method whenever this method is overridden,
so as to maintain the general contract for the
hashCode method, which states that equal objects must have
equal hash codes.
trueif this object is the same as the obj argument;
The identifiers should be reasonably short. They should be representable in the file system as file names,
meaning they should not contain any special character that a file name cannot contain. They may include the slash
It is not required that classpath locations with the same identifier equal, but if they equal, they must return the same identifiers.
Identifiers are usually used by external managers to determine file system storage locations. If they include slashes, usually subdirectories are created accordingly.
The general contract of
- Whenever it is invoked on the same object more than once during an execution of a Java application, the
hashCodemethod must consistently return the same integer, provided no information used in
equalscomparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
- If two objects are equal according to the
equals(Object)method, then calling the
hashCodemethod on each of the two objects must produce the same integer result.
- It is not required that if two objects are unequal according to the
Object)method, then calling the
hashCodemethod on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by class
Object does return distinct
integers for distinct objects. (This is typically implemented by converting the internal address of the object
into an integer, but this implementation technique is not required by the Java™ programming language.)