Package org.apache.commons.lang3.compare

Class ComparableUtils

  • public class ComparableUtils
extends java.lang.Object

    Utility library to provide helper methods for translating Comparable.compareTo(T) result into a boolean.

    Example: boolean x = is(myComparable).lessThanOrEqualTo(otherComparable)

    #ThreadSafe#

    Since:
    3.10

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static class  ComparableUtils.ComparableCheckBuilder<A extends java.lang.Comparable<A>>
      Provides access to the available methods

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <A extends java.lang.Comparable<A>>
      java.util.function.Predicate<A>      		 between​(A b, A c)
      Checks if [b <= a <= c] or [b >= a >= c] where the a is the tested object.
      static <A extends java.lang.Comparable<A>>
      java.util.function.Predicate<A>      		 betweenExclusive​(A b, A c)
      Checks if (b < a < c) or (b > a > c) where the a is the tested object.
      static <A extends java.lang.Comparable<A>>
      java.util.function.Predicate<A>      		 ge​(A b)
      Checks if the tested object is greater than or equal to b
      static <A extends java.lang.Comparable<A>>
      java.util.function.Predicate<A>      		 gt​(A b)
      Checks if the tested object is greater than b
      static <A extends java.lang.Comparable<A>>
      ComparableUtils.ComparableCheckBuilder<A>      		 is​(A a)
      Provides access to the available methods
      static <A extends java.lang.Comparable<A>>
      java.util.function.Predicate<A>      		 le​(A b)
      Checks if the tested object is less than or equal to b
      static <A extends java.lang.Comparable<A>>
      java.util.function.Predicate<A>      		 lt​(A b)
      Checks if the tested object is less than b

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • between

        public static <A extends java.lang.Comparable<A>> java.util.function.Predicate<A> between​(A b,
                                                                                          A c)
        Checks if [b <= a <= c] or [b >= a >= c] where the a is the tested object.
        Type Parameters:
        A - type of the test object
        Parameters:
        b - the object to compare to the tested object
        c - the object to compare to the tested object
        Returns:
        a predicate for true if the tested object is between b and c

      • betweenExclusive

        public static <A extends java.lang.Comparable<A>> java.util.function.Predicate<A> betweenExclusive​(A b,
                                                                                                   A c)
        Checks if (b < a < c) or (b > a > c) where the a is the tested object.
        Type Parameters:
        A - type of the test object
        Parameters:
        b - the object to compare to the tested object
        c - the object to compare to the tested object
        Returns:
        a predicate for true if the tested object is between b and c and not equal to those

      • ge

        public static <A extends java.lang.Comparable<A>> java.util.function.Predicate<A> ge​(A b)
        Checks if the tested object is greater than or equal to b
        Type Parameters:
        A - type of the test object
        Parameters:
        b - the object to compare to the tested object
        Returns:
        a predicate for true if the value returned by Comparable.compareTo(T) is greater than or equal to 0

      • gt

        public static <A extends java.lang.Comparable<A>> java.util.function.Predicate<A> gt​(A b)
        Checks if the tested object is greater than b
        Type Parameters:
        A - type of the test object
        Parameters:
        b - the object to compare to the tested object
        Returns:
        a predicate for true if the value returned by Comparable.compareTo(T) is greater than 0

      • is

        public static <A extends java.lang.Comparable<A>> ComparableUtils.ComparableCheckBuilder<A> is​(A a)
        Provides access to the available methods
        Type Parameters:
        A - type of the base object
        Parameters:
        a - base object in the further comparison
        Returns:
        a builder object with further methods

      • le

        public static <A extends java.lang.Comparable<A>> java.util.function.Predicate<A> le​(A b)
        Checks if the tested object is less than or equal to b
        Type Parameters:
        A - type of the test object
        Parameters:
        b - the object to compare to the tested object
        Returns:
        a predicate for true if the value returned by Comparable.compareTo(T) is less than or equal to 0

      • lt

        public static <A extends java.lang.Comparable<A>> java.util.function.Predicate<A> lt​(A b)
        Checks if the tested object is less than b
        Type Parameters:
        A - type of the test object
        Parameters:
        b - the object to compare to the tested object
        Returns:
        a predicate for true if the value returned by Comparable.compareTo(T) is less than 0