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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. Interface (Java) - Wikipedia

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

    Some common Java interfaces are: Comparable has the method compareTo, which is used to describe two objects as equal, or to indicate one is greater than the other. Generics allow implementing classes to specify which class instances can be compared to them. Serializable is a marker interface with no

  5. Java collections framework - Wikipedia

    en.wikipedia.org/wiki/Java_collections_framework

    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.

  6. 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.

  7. 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 ...

  8. Generic programming - Wikipedia

    en.wikipedia.org/wiki/Generic_programming

    The method's type constraint indicates that the method is applicable to any type T that implements the generic IComparable<T> interface. This ensures a compile time error, if the method is called if the type does not support comparison. The interface provides the generic method CompareTo(T).

  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.