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java.lang.Objectorg.jfree.xml.factory.objects.ClassComparator
The class comparator can be used to compare and sort classes and their superclasses. The comparator is not able to compare classes which have no relation...
Constructor Summary | |
ClassComparator()
Defaultconstructor. |
Method Summary | |
int |
compare(java.lang.Object o1,
java.lang.Object o2)
Compares its two arguments for order. |
boolean |
isComparable(java.lang.Class c1,
java.lang.Class c2)
Checks, whether the given classes are comparable. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.util.Comparator |
equals |
Constructor Detail |
public ClassComparator()
Method Detail |
public int compare(java.lang.Object o1, java.lang.Object o2)
Note: throws ClassCastException if the arguments' types prevent them from being compared by this Comparator. And IllegalArgumentException if the classes share no relation. The implementor must ensure that sgn(compare(x, y)) == -sgn(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)
The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.
Finally, the implementer must ensure that compare(x, y)==0 implies that sgn(compare(x, z))==sgn(compare(y, z)) for all z.
It is generally the case, but not strictly required that (compare(x, y)==0) == (x.equals(y)). Generally speaking, any comparator that violates this condition should clearly indicate this fact. The recommended language is "Note: this comparator imposes orderings that are inconsistent with equals."
compare
in interface java.util.Comparator
o1
- the first object to be compared.o2
- the second object to be compared.
public boolean isComparable(java.lang.Class c1, java.lang.Class c2)
c1
- the first class to comparec2
- the second class to compare
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