| The java programming language is becoming
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| | was still complex with things like
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| more and more popular each day. It is the
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| | pointers, memory leak and multiple
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| language without which one cannot even
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| | inheritence. The pointer
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| hope to a land a job these
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| | concept was taken from C and it was very
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| days. But has somebody even wondered how
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| | messy! The pointer is special type of
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| this language came about? There are many
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| | variable
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| stories about, many books have been
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| | that points to other variables. Since
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| written. Here is my version (not approved
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| | there was no guidelines as to how to use
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| by Sun Microsystems).The java programming
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| | these pointers, it was very easy loose
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| language originated in Indonesia. It was
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| | track of them. In a typical two thousand
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| meant to be used
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| | lines program, one would frequently end
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| by the tourists that visit that country
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| | up with hundredes of pointers pointing
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| each year. Why would tourists want to use
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| | to thousands, some of them are pointers
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| computer? Well, these are no ordinary
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| | and some just plain variables. Needless
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| tourists. They are rich tourists. Have
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| | to say this made a large program
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| they not been rich, they would not
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| | extremely difficult to read and when the
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| travel half way around the world to visit
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| | programmer left for another company,
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| this
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| | they would have no other choice than
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| place. Most people would be content to
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| | to just throw away his program! It was
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| see just what is available near by. For
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| | sometimes necessary to do this even
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| example, if you are a texan living in
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| | when the programmer was around and very
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| Dallas, you will visit the stockyards or
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| | much alive. This is because the pointers
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| may be the
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| | he created inside his program had taken a
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| trinity river park. If you live in New
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| | life of their own and defy
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| Orleans area, you would see st. mary's
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| | every attempt to predict how the program
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| bayou. Once in your lifetime, one will
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| | should behave.
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| probably visit Hawaii or Niagara. But
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| | Memory management was also another weak
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| going to Indonesia and its islands,
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| | point of C and C++. The programmer was
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| Bali, Java, etc is not for the ordinary
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| | responsible for cleaning up the memory
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| people. Anyway, coming back to the
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| | their program would allocate and use.
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| question why these tourists need to use
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| | Failure to do so will result in a crash
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| computer programs. They go there not
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| | of the whole computer.Multiple
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| just to have fun and also get some work
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| | inheritence, though sparingly used, was
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| done in a fun atmosphere as these people
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| | another feature of C++ which made a
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| are very important people.From the very
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| | programmer's life miserable. It, however,
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| start java was supposed to be computer
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| |
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| independent. That means if
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| | had its use, especially in job
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| you write a program in java in one
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| | interviews. This one question, they
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| computer, it should run in all computers.
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| | thought,
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|
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| | helped them separate the wheat from the
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| This was necessary because tourists
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| | chaff.But C++ still had some nice and
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| bring all kinds of computers with them.
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| | simple features, like inheritence,
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| Some bring
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| | encapsulation, etc. They are something
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| Windows machine, some Apple mackintosh.
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| | one can describe in plain english,
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| Some of the affluent ones bring
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| | something one can explain to a layman.
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| Sun server workstations or even a super
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| | So the creator of java decided to take
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| computer.Before starting to create java
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| | the good features of inherience,
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| they also sought to see if there have
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| | encapsulation, and polymorphism from C++,
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| similar
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| |
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| stuff done already. Even though they
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| | while discarding the bad features such
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| could find none, they found they can use
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| | as multiple inherience, pointers etc.
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| lots of feature from some existing
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| | The memory management was
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| laguages. One such language they found
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| | improved in java where the programmer
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| was C++. C++ was an advancement over the
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| | will not be held responsible for memory
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| language called C. In fact, ideas of
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| | management. They
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| C++ was already hidden in C. In that
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| | can clean up after themselves if they
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| language, one can increment a variable,
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| | want to get extra credit, but they do not
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| say i, by applying the ++ operator e.g.
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| |
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| i++. This would increase the value of
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| | need to. Needless to say all these was
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| the variable i by one. If i had a value
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| | great news to the tourists in
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| of 5, it would make it 6, etc.
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| | Indonesia!Java introduced lot of clarity
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| What a vision!Anyway, coming back to
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| | in notations too. For example, in C++
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| C++, it made an important advancement
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| | they
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| over C by introducing the idea of a
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| | would say class doctor:person to mean
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| class. To understand class, one has to
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| | doctor is derived from person.
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| undestand
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| | It is obviously very cryptic. The same
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| structure which was already used in C.
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| | situation can be expressed
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| The structure is a group of variables.
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| | in java as class doctor extends person
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| For example, you have a name, an
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| | , which is much easier to understand. But
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| address, age etc. for any person. In
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| | there are few awkward stuff in java too
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| stead of
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| | especially when someone
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| using them separately, in C one can
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| | says class bum extends person (my last
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| group them together and call it a person.
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| | bum joke)!Java made an important
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| The creator of C++ said there is no need
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| | contribution in the graphical user
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| to expose these variables (name, address,
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| | interface (GUI) area.
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| etc) to the outside world. They said
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| | C++ was really lacking in expertise
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| these details should be hidden
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| | here. They visual C++, but worked only on
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| from the outside world. They called this
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| | windows environment. But it did not work
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| concept encapsulation.Another important
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| | in UNIX systems or mackintoshes. Just
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| contribution of C++ was the concept of
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| | like other features of java, this was
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| inheritence. This concept can be best
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| | also supposed to be platform independent.
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| explained by example. Let's go back to
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| | This was further necessary because one
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| the example of the person. A person is
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| | can put some little GUI on a web page
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| very general concept. There can be many
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| | which can be views over the internet. And
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| different kinds of persons, e.g doctors,
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| | one cannot control what kind of computers
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| lawyers, teachers, or just a bum! But
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| | other will have.After a while, it was
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| each of these people have a name, an
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| | necessary to call programs from one
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| address, age etc. Even a bum has all
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| | computer to another
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| these. The creator of C++ thought one can
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| | computer. To do this, they created J2EE.
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| define a base class call person and
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| | I am not sure how they came
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| other classes can be derived from it. In
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| | up with the name J2EE. The 'J' of J2EE,
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| plain english, this would mean, a doctor
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| | of course, means "Java", and I can be
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| is special kind of person, lawyer is
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| | reasonably sure '2' stands for 'To'. But
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| another special kind of person. Now the
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| | I do not know what the 'EE' part is all
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| common attributes of all these kinds of
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| | about, probably some kind of extension.
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| people can be put in
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| | Or at this point they ran out of names
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| the person class and special attributes
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| | to think of. So they decided to
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| can be put in the derived classes, e.g.
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| | have one of those just another vague
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| hospital for the doctor, court for the
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| | acronyms.If you would like, you can also
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| lawyer, and nothing for the bum.But C++
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| | visit my home page.
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