public interface Comparable<T>
Collections.sort(java.util.List<T>) and java.util.Arrays#sort can then
be used to automatically sort lists of classes that implement this interface.
The order rule must be both transitive (if x.compareTo(y) < 0 and
y.compareTo(z) < 0, then x.compareTo(z) < 0 must hold) and
invertible (the sign of the result of x.compareTo(y) must be equal to the
negation of the sign of the result of y.compareTo(x) for all combinations of
x and y).
In addition, it is recommended (but not required) that if and only if the
result of x.compareTo(y) is zero, then the result of x.equals(y) should be
true.
| Modifier and Type | Method and Description |
|---|---|
int |
compareTo(T another)
Compares this object to the specified object to determine their relative
order.
|
int compareTo(T another)
another - the object to compare to this instance.another;
a positive integer if this instance is greater than
another; 0 if this instance has the same order as
another.ClassCastException - if another cannot be converted into something
comparable to this instance.