Skip to main content

History of Java


  • 1990 Oak (interactive television, big failure)
  • 1994 Java (for the Internet)
    • Main feature: "Write Once, Run Any Where" => wrap the operating system so they all look the same
  • Designed for
    • A fresh start (no backward compatibility)
    • “Pure” OOP: C++ Syntax, Smalltalk style
    • Improvements over C++ much harder to write a bad program 
    • Internet programming
      • Very hard to create a virus 
      • Run in a web browser (and at the server)
    • There is a speed issue (from Java 1.3 and up much better)
  • C# Microsoft's “Java-Killer” project release 2001
    • Language very similar to Java 
    •  Commen-Language Runtime (CLR) supports 30+ languages

 

Comments

  1. hmm niz job continue further i have get a got knowledge about history of java keep going on it

    ReplyDelete

Post a Comment

Popular posts from this blog

case Java Keyword

The case is used to label each branch in a switch statement. Examples int arg = <some value>; switch (arg) { case 1: <statements> break; case 2: <statements> break; default: <statements> break; }

catch Java Keyword

The catch keyword is used to define exception handling blocks in try−catch or try−catch−finally statements. Examples try { <block that may throw exceptions> } catch (<java.lang.Exception or subclass> e) { <code to handle exception e> } try { <block that may throw different exceptions> } catch (FooException e) { <code to handle FooException e> } catch (BarException e) { <code to handle BarException e> } try { <block that may throw exceptions> } catch (<java.lang.Exception or subclass> e) { <code to handle exception e> } finally { <statements that execute with or without exception> }

Polymorphism and Dynamic Binding

Polymorphism: One piece of code works with all shape objects. Dynamic binding: How polymorphism is implemented Take previous Shape class hierarchy  remove inheritance  remove general and abstract class Shape