Training Java - Lesson1
- 1. Lesson1: OVERVIEW What is JAVA How it works Development environment HelloWorld example Summary
- 2. What is Java Not only a programming language, it is software development platform which: covers a high-level programming language Can run on multi-platform like:Window, Mac, Linux.. Implements completely OO … .
- 3. What is Java
- 4. How is works HelloWorld.java compile HelloWorld.class Window Linux MAC JMV
- 5. Development environment tools Libs+JVM
- 6. Development Environment $PATH variable It is the system-path which used to fast access to one program in the system. Edit $PATH to using java’s tools add the path of bin sub-folder of the java root folder on the end of $PATH, after putting ‘ ; ’ symbol Ex: $PATH ; C:\ProgramFiles\Java\jdk1.5.0_22\bin
- 7. HelloWorld example Open the notepad, then type the following code: Save it to file named: HelloWorld.java, for exam: D:\temp\javatutor\HelloWorld.java
- 8. Compile HelloWorld.java Open cmd, move to D:\temp\javatutor\ Type following command: javac HelloWorld.java After completion, run HelloWorld by executing the command: java HelloWorld
- 10. Summary Java is not only programming language, it is software development platform Java can run on every OS with once writing and completion code.