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  2. Three-way comparison - Wikipedia

    en.wikipedia.org/wiki/Three-way_comparison

    For example, in Java, any class that implements the Comparable interface has a compareTo method which either returns a negative integer, zero, or a positive integer, or throws a NullPointerException (if one or both objects are null). Similarly, in the .NET framework, any class that implements the IComparable interface has such a CompareTo method.

  3. Interface (object-oriented programming) - Wikipedia

    en.wikipedia.org/wiki/Interface_(object-oriented...

    For example, in Java, the Comparable interface specifies a method compareTo() which implementing classes must implement. This means that a sorting method, for example, can sort a collection of any objects of types which implement the Comparable interface, without having to know anything about the inner nature of the class (except that two of ...

  4. Java collections framework - Wikipedia

    en.wikipedia.org/wiki/Java_collections_framework

    Instead of elements being ordered in the order in which they are inserted, they are ordered by priority. The method used to determine priority is either the java.lang.Comparable#compareTo(T) method in the elements, or a method given in the constructor. The class creates this by using a heap to keep the items sorted.

  5. Covariance and contravariance (computer science) - Wikipedia

    en.wikipedia.org/wiki/Covariance_and_contra...

    An example is the compareTo method: a. compareTo (b) checks whether a comes before or after b in some ordering, but the way to compare, say, two rational numbers will be different from the way to compare two strings. Other common examples of binary methods include equality tests, arithmetic operations, and set operations like subset and union.

  6. Interval tree - Wikipedia

    en.wikipedia.org/wiki/Interval_tree

    a.compareTo(b) returns a negative value if a < b a.compareTo(b) returns zero if a = b a.compareTo(b) returns a positive value if a > b. The code to search for an interval is similar, except for the check in the middle:

  7. Interface (Java) - Wikipedia

    en.wikipedia.org/wiki/Interface_(Java)

    An interface in the Java programming language is an abstract type that is used to declare a behavior that classes must implement. They are similar to protocols.Interfaces are declared using the interface keyword, and may only contain method signature and constant declarations (variable declarations that are declared to be both static and final).

  8. Comparison of programming languages (object-oriented ...

    en.wikipedia.org/wiki/Comparison_of_programming...

    END METHOD. METHOD-ID. GET PROPERTY bar. DATA DIVISION. LINKAGE SECTION. return-var declaration PROCEDURE DIVISION RETURNING return-var. instructions. END METHOD. METHOD-ID. SET PROPERTY bar. DATA DIVISION. LINKAGE SECTION. value-var declaration PROCEDURE DIVISION USING value-var. instructions. END METHOD. Cobra pro bar «as type» Tab ↹ get ...

  9. IEEE 754-1985 - Wikipedia

    en.wikipedia.org/wiki/IEEE_754-1985

    According to the Java Language Specification, [10] comparison and equality operators treat them as equal, but Math.min() and Math.max() distinguish them (officially starting with Java version 1.1 but actually with 1.1.1), as do the comparison methods equals(), compareTo() and even compare() of classes Float and Double.