The program will compile, but not run, because JVM will not recognize the main() method. Remember JVM always looks for the main() method with a string type array as a parameter.

An object in Java is the physical as well as a logical entity, whereas, a class in Java is a logical entity only.

Multiple inheritance is one of the object oriented feature where a class or a sub class can inherit features from more than one parent class or super class.

Interface is collection of methods of abstract type (having empty body). It’s similar to Abstract class. Interface is blueprint of class. Interface specify what class must do and not how to.

For attributes, methods and constructors, you can use the one of the following:

Programming languages These will probably expose my ignorance pretty nicely.

after the terminal operation of the stream pipeline commences.

Full disclosure: I’m a co-maintainer of clj-time and I’m pretty vocal about encouraging people not to use clj-time when starting a new project: use Java Time instead. Conversion from an existing, clj-time-heavy project is another matter tho’, unfortunately.

Perhaps part of the confusion - and you say this in a different way in your little memo - is that the C/C++ folks see OO as a liberation from a world that has nothing resembling a first-class functions, while Lisp folks see OO as a prison since it limits their use of functions/objects to the style of (9.). In that case, the only way OO can be defended is in the same manner as any other game or discipline -- by arguing that by giving something up (e.g. the freedom to throw eggs at your neighbor's house) you gain something that you want (assurance that your neighbor won't put you in jail).

Sum-of-product-of-function pattern - objects are (in effect) restricted to be functions that take as first argument a distinguished method key argument that is drawn from a finite set of simple names.

All you can do is send a message (AYCDISAM) = Actors model - there is no direct manipulation of objects, only communication with (or invocation of) them. The presence of fields in Java violates this.

Parametric polymorphism - functions and data structures that parameterize over arbitrary values (e.g. list of anything). ML and Lisp both have this. Java doesn't quite because of its non-Object types.

type-safe enum pattern

a mutator method is a method used to control changes to a variable. They are also widely known as setter methods

class MyClassDef {

    public void setProperty(String propertyVal) { .. }

}

but the true technology of Java is not in the language, but the virtual machine itself. The JVM as it stands today, is a fast, abstract machine that you can plug any languages into, and is able to operate at speeds comparable to natively compiled binaries.

Other Java Tutorials and Learning Sites

Java Programming Language was developed by James Gosling, Chris Warth, Patrick Naughton, Mike Sheridan and Ed Frank at Sun Microsystems, Inc in the year 1991. At first Java Programming Language was named as Oak, later that it was renamed to Java in the year 1995. Java Programming is a platform independent language. The Internet (World Wide Web) made Java programming more valuable. Since, Internet is connected to different types of systems which having different CPU's & environments, it must have the programs to run on any OS, CPU and Platform. Since, Java programming obtain platform independence and can able to run on any platform like Unix, Intel, Mac etc., it was widely used. Java language also protects two other major issues of Internet, they are security & portability.

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