Sams Teach Yourself Java in 21 Days Covering Java 7 and Android App Development 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 sixth 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. This edition also includes new material on using NetBeans, the free integrated IDE for Java. No previous programming experience required. By following the 21 carefully organized lessons in this book, anyone can learn the basics of Java programming. Learn at your own pace. You can work through each chapter sequentially to make sure you thoroughly understand all the concepts and methodologies, or you can focus on specific lessons to learn the techniques that interest you most. ¿ Test your knowledge. Each chapter ends with a Workshop section filled with questions, answers, and exercises for further study. There are even certification practice questions.