Package org.apache.commons.io.function

Interface IOComparator<T>

Type Parameters:

T - the type of objects that may be compared by this comparator

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface IOComparator<T>

Like Comparator but throws IOException.

Since:

2.12.0

See Also:

• Comparator

Method Summary

Modifier and Type	Method	Description
default Comparator<T>	asComparator()	Creates a Comparator for this instance that throws UncheckedIOException instead of IOException.
int	compare(T o1, T o2)	Like Comparator.compare(Object, Object) but throws IOException.

Method Details

asComparator

default Comparator<T> asComparator()

Creates a Comparator for this instance that throws UncheckedIOException instead of IOException.

Returns:

an UncheckedIOException BiFunction.

compare

int compare(T o1,
 T o2)
     throws IOException

Like Comparator.compare(Object, Object) but throws IOException.

Parameters:

o1 - the first object to be compared.

o2 - the second object to be compared.

Returns:

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

Throws:

NullPointerException - if an argument is null and this comparator does not permit null arguments

ClassCastException - if the arguments' types prevent them from being compared by this comparator.

IOException - if an I/O error occurs.