Sams Teach Yourself Java in 21 Days continues to be one of the most popular, best-selling Java tutorials on the market. Written by an expert technical writer, it has been acclaimed for its clear and personable writing, for its extensive use of examples, and for its logical and complete organization. The newest edition of Sams Teach Yourself Java in 21 Days adds coverage of Java 7 and places a special emphasis on Android programming, capitalizing on the fastest-growing area of Java programming. There will be a new chapter on Android development and additional material where appropriate throughout the book. Another significant change for this edition is to coverage of the JDK in favor of NetBeans, the free integrated IDE for Java. NetBeans works on Windows, Linux and Mac is free and open source and has become a solid IDE. The JDK is hard for beginners, particularly if they have never used the command line environment in Windows. A new appendix walks the reader through the process of installing NetBeans and creating a sample application.