java introduction
Java’s Lineage
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Java is related to C++, which is a direct descendent of C. Much of the character of Java is inherited from these two languages. From C, Java derives its syntax. Many of Java’s object-oriented features were influenced by C++.
C-> Test.c [Source] --> Test.exe [ Machine Lang.] C is platform dependent - Platform = H.W +O.S
Java -> Test.java --> Test.class [byte code] platform independent | J.V.M Jvm (Java Virtual Machine) | Interpreter O/S
1990 -> started working on lang.
1991 -> OOK --> 1995 Java
1995 -> Internet was becoming popular.
The Creation of Java
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Java was conceived by James Gosling, Patrick Naughton, Chris Warth, Ed Frank, and Mike Sheridan at Sun Microsystems, Inc. in 1991.It took 18 months to develop the first working version. This language was initially called “Oak” but was renamed “Java” in 1995. Original impetus for Java was not the Internet! Instead, the primary motivation was the need for a platform-independent (that is, architectureneutral) language that could be used to create software to be embedded in various consumer electronic devices, such as microwave ovens and remote controls. As you can probably guess, many different types of CPUs are used as controllers. The trouble with C and C++ (and most other languages) is that they are designed to be compiled for a specific target. Although it is possible to compile a C++ program for just about any type of CPU, to do so requires a full C++ compiler targeted for that CPU. The problem is that compilers are expensive and time-consuming to create. An easier— and more cost-efficient—solution was needed. In an attempt to find such a solution, Gosling and others began
--------------
Java is related to C++, which is a direct descendent of C. Much of the character of Java is inherited from these two languages. From C, Java derives its syntax. Many of Java’s object-oriented features were influenced by C++.
C-> Test.c [Source] --> Test.exe [ Machine Lang.] C is platform dependent - Platform = H.W +O.S
Java -> Test.java --> Test.class [byte code] platform independent | J.V.M Jvm (Java Virtual Machine) | Interpreter O/S
1990 -> started working on lang.
1991 -> OOK --> 1995 Java
1995 -> Internet was becoming popular.
The Creation of Java
---------------------
Java was conceived by James Gosling, Patrick Naughton, Chris Warth, Ed Frank, and Mike Sheridan at Sun Microsystems, Inc. in 1991.It took 18 months to develop the first working version. This language was initially called “Oak” but was renamed “Java” in 1995. Original impetus for Java was not the Internet! Instead, the primary motivation was the need for a platform-independent (that is, architectureneutral) language that could be used to create software to be embedded in various consumer electronic devices, such as microwave ovens and remote controls. As you can probably guess, many different types of CPUs are used as controllers. The trouble with C and C++ (and most other languages) is that they are designed to be compiled for a specific target. Although it is possible to compile a C++ program for just about any type of CPU, to do so requires a full C++ compiler targeted for that CPU. The problem is that compilers are expensive and time-consuming to create. An easier— and more cost-efficient—solution was needed. In an attempt to find such a solution, Gosling and others began