Intro to java
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Java was created in the early 1990s by James Gosling at Sun Microsystems to be a flexible, secure, portable programming language. It was designed to solve problems with C and C++ by allowing programs to run on any device with a Java Virtual Machine (JVM), making it "write once, run anywhere." Java uses object-oriented programming concepts and its bytecode can be safely downloaded and run on various platforms like web browsers without fear of viruses.
Intro to java
- 2. OBJECTIVES 1. Outline the history of JAVA 2. Define JAVA 3. Identify the fundamental problems that JAVA solved 4. Generalize the JAVA platform
- 3. INTRODUCTION TO JAVA PROGRAMMING SUN STANFORD UNIVERSITY NETWORKS MICROSYSTEMS GREEN TEAM JAMES GOSLING C and C++ BASED LANGUAGE HOME ENTERTAINMENT CONTROLLER W3 – NETSCAPE NAVIGATOR OAK JAVA “WRITE ONCE RUN ANYWHERE”
- 4. INTRODUCTION TO JAVA PROGRAMMING PROGRAMMING LANGUAGE • FLEXIBILITY • FUNCTIONALITY COMPLEX LANGUAGE • KNOWLEDGE OF C/C++ PROGRAMMING • OBJECT-ORIENTED SOFTWARE DESIGN SOFTWARE DEVELOPMENT KIT AND SPECIAL COMPILER • JAVA PROGRAM CONSISTS OF PIECES CALLED CLASSES
- 5. INTRODUCTION TO JAVA PROGRAMMING • safely download applets • without fear of viral infection or malicious intent SECURITY • Java programs can be dynamically downloaded to all various types of platforms connected to the Internet, • some means of generating portable executable code is needed. • Java accomplishes this through its Java bytecode PORTABILITY
- 6. INTRODUCTION TO JAVA PROGRAMMING THE JAVA VIRTUAL MACHINE (JAVA VM) the base for the Java platform ported onto various hardware-based platforms Microsoft Internet Explorer and Netscape Navigator THE JAVA APPLICATIONS PROGRAMMING INTERFACE (JAVA API) large collection of ready-made software components that provide many useful capabilities The Java API is grouped into libraries (packages) of related components Java Class Library of Java Applications Programming Interface (Java API) – packages used in Java classes