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  2. 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 ...

  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. 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.

  5. Comparison of Java and C++ - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_Java_and_C++

    In Java, methods are virtual by default, but can be made non-virtual by using the final keyword (i.e., opt-out virtual). C++ enumerations are primitive types and support implicit conversion to integer types (but not from integer types). Java enumerations can be public static enum{enumName1,enumName2} and are used like classes

  6. Covariance and contravariance (computer science) - Wikipedia

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

    Therefore, both Java and C# treat array types covariantly. For instance, in Java String [] is a subtype of Object [], and in C# string [] is a subtype of object []. As discussed above, covariant arrays lead to problems with writes into the array. Java [4]: 126 and C# deal with this by marking each array object with a type when it is created ...

  7. Comparison of C Sharp and Java - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_C_Sharp_and_Java

    Both the C# extension methods and the Java default methods allow a class to override the default implementation of the extension/default method, respectively. In both languages this override is achieved by defining a method on the class that should use an alternate implementation of the method.

  8. Choking emergency? How to do the Heimlich maneuver - AOL

    www.aol.com/choking-emergency-heimlich-maneuver...

    The Heimlich maneuver is a first-aid method recommended by most health organizations, which uses abdominal thrusts to dislodge an obstruction from a person’s windpipe. Boy, 8, Saves Choking ...

  9. 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).