JAVA TRAINING IN CHENNAI

1
Java Training in Chennai

• https//www.besanttechnologies.com/training-course
  s/java-training-in-bangalore

2
Java Training in Chennai

• Remembering how the programming world was in 1995
  is not an easy task. Object-oriented programming,
  for example, was an accepted but rarely practiced
  paradigm, and much of what happened as so-called
  object-oriented programs was little more than a
  renamed C code that used instead of print and
  class in instead of struct. The programs we wrote
  in those days routinely knocked over the kernel
  because of pointer arithmetic errors or out of
  memory due to leaks. The source code can hardly
  be ported between different versions of Unix.
  Running the same binary on different processors
  and operating systems was crazy.

3
Java Training in Chennai

• Java has changed all that. While the
  platform-dependent C code, manually assigned,
  will stay with us for the next 20 years, at least
  Java has proven that this was an option, not a
  requirement. For the first time, we started
  writing the actual production code in an
  object-oriented multidata language, collected
  from the trash and we like ... millions of us.
  Languages that came after Java, especially C ,
  had to exclude the new top bar for developer
  productivity that Java established.
• James Gosling, Mike Sheridan, Patrick Naughton
  and the other Sun's Green Project programmers did
  not invent most of the important technologies
  that Java used generalized. Most of the key
  features that included what was then known as
  Carvalho found their origins elsewhere

4
Java Training in Chennai

• A base object class from which all classes
  descend? Chat
• Strong compile-time static type checking? Ada.
• Multiple interface, single implementation
  inheritance? Objective C.
• Online documentation? CWeb
• Multi-platform virtual machine and byte code with
  just-in-time compilation. Smalltalk again,
  especially the dialect of the Self of the Sun.

5
Java Training in Chennai

• Garbage collection? Lisp
• Primitive types and control structures? DO IT.
• Double-type system with primitive non-object
  types for performance? C

6
Java Training in Chennai

• However, Java itself has pioneered new
  territories. Nothing else, like the marked
  exceptions, is present in any other language,
  sooner or later. Java was also the first language
  to use Unicode in the native string type and the
  source code itself.

7
Java Training in Chennai

• But the central strength of Java was that it was
  built to be a practical tool to get the job done.
  He popularized good ideas from earlier languages,
  rearranging them in a format familiar to the
  average C coder, although (as opposed to C and
  Objective-C) Java was not a strict superset of C.
  In fact, it was precisely this will not only add,
  but also eliminate features that make Java much
  simpler and easier to learn than other
  descendants of object-oriented C.

8
Java Training in Chennai

• Java did not have (and does not yet have)
  structures, syndicates, typedefs, and header
  files. An object-oriented language not chained by
  a requirement to execute the legacy code did not
  need them. Similarly, Java wisely omitted ideas
  that have been tested and found to be deficient
  in other languages multi-implementation
  inheritance, pointer arithmetic, and operator
  overload more notably. This good taste at the
  beginning means that even 20 years later, Java is
  still relatively free of the warnings "here are
  dragons" that mess up the style guides of their
  predecessors.

9
Java Training in Chennai

• But the rest of the programming world has not
  stopped. Thousands of programming languages have
  increased since we started programming Java, but
  most never achieved more than a small fraction of
  collective attention before disappearing. What we
  sold in Java were applets, small programs that
  work within web pages that can interact with the
  user and do more than display text, images and
  static shapes. Today, this does not seem like
  much, but remember in 1995, JavaScript and DOM
  did not exist, and an HTML form that spoke with a
  server-side CGI script, written in Perl, was
  state of the art.

10
Java Training in Chennai

• The irony is that the applets never worked very
  well. They were completely isolated from the
  content of the page, unable to read or write
  HTML, since JavaScript could eventually do so.
  Security restrictions have prevented applets from
  interacting with the local file system and
  third-party network servers. These restrictions
  have made the applets suitable for little more
  than simple games and animations. Even these
  trivial proofs of concept were hampered by the
  poor performance of the first virtual navigation
  machines.

11
Java Training in Chennai

• And when applet shortcomings were fixed, browsers
  and application developers for the user had
  already outgrown Java. Flash, JavaSc ript and
  more recently HTML5 has captured our attention as
  much more effective platforms for delivering
  dynamic web content that Java promised but failed
  to deliver. Even so, the applets were what
  inspired us to work with Java and what we
  discovered was a clean language that softened
  many of the harshness and weaknesses we struggle
  with in alternatives such as C . The automatic
  garbage charge was worth the ticket price.
• The Applets may have been overvalued and
  undelivered, but that did not mean that Java was
  not a very good language for other problems.
  Originally designed as a multi-platform client
  library, Java has found real success in server
  space.

12
Java Training in Chennai

• Servlets, Java Server Pages, and a variety of
  enterprise-centric libraries that have been
  grouped periodically and changed their name into
  a confusing acronym or other real problem solved
  for us and for business. Leaving aside marketing
  flaws, Java has reached a near-standard status in
  IT departments around the world. (Fast What's
  the difference between Java 2 Enterprise Edition
  and Java Platform Enterprise Edition? If you
  guessed J2EE is the successor to JEE, you have
  exactly the opposite.)

13
Java Training in Chennai

• Some of these company-focused products were
  alongside alternative fonts and intense,
  inspirational add-ins, such as Spring, Hibernate,
  and Tomcat, but all this relied on Sun's
  foundation. Probably the most important open
  source contribution to Java and art program is
  JUnit. Test-based development (TDD) had already
  been tested with Smalltalk. However, like many
  other innovations in that language, TDD failed to
  get widespread notification and adoption until it
  was available in Java. When Kent Beck and Erich
  Gamma launched JUnit in 2000, TDD has rapidly
  grown from some experimental practice of

14
Java Training in Chennai

• some programmers to the standard way of
  developing software in the 21st century. As
  Martin Fowler said, "Never in the field of
  software development were they both due to a few
  lines of code," and those few lines of code were
  written in Java.
• Twenty years since its inception, Java is no
  longer the beginning disheveled. He has become
  the entrenched incumbent against whom other
  tongues rebel. Lighter languages, such as Ruby
  and Python, have made significant progress in
  Java's territory, especially in the boot
  community, where development speed counts more
  than strength and scale, a compromise that Java
  leveraged at the outset when machine performance
  data the compiled code. Java, of course, does not
  stop. Oracle continues to incorporate well-proven
  technologies from other languages, such as
  generics, autobox, enumerations and, more
  recently, lambda expressions. Many programmers
  have found these ideas in Java. Not all
  programmers know Java, but whether they know it
  or not, all programmers today have been
  influenced by it.

15
Java Training in Chennai

• Thank You !!!!!
• https//www.besanttechnologies.com/training-course
  s/java-training