Java Review

Week 1 - Elements of the Java Platform

Topics

• Programming
• Elements of the Java Platform
• Creating a Simple Java application
• Installing and running the JDK

Programming

Question: What are Programs?

Question: What is Programming?

Why Java?

• Platform independent

• Simple to learn

• Built-in security

• Designed for internet

Keys to Java Programming

• In Java everything is an Object.

• Java programs consist of one or more objects.

  Question: What's an "object"?

• One object is the starting point of the program.

• It is this object's main method that starts the application going.

  All Java applications have at least one method named "main"

Java tools

• Compiling Java source - Using the javac compiler

• Running a Java application Using the java interpreter which executes Java bytecodes in a Java Virtual Machine (JVM)