tailieunhanh - Beginning Programming with Java for Dummies 2nd phần 2

hoặc sự cho phép trước bằng văn bản của Nhà xuất bản, hoặc uỷ quyền thông qua việc thanh toán của các bản sao cho mỗi phù hợp lệ phí để Trung tâm Bản quyền giải phóng mặt bằng | 24 Part I Revving Up Downloading and Installing the Software You Need If you ve paid for this book and you already have a working computer you ve already spent all the money you need to spend. All the software you need for learning Java is free for the downloading. Downloading and installing a Java compiler When I want the weather to be sunny I bring an umbrella to work. Bringing an umbrella tells the weather gods to do the opposite of whatever Barry anticipates. The same kind of thing happens with the Java Web site. If I want someone to redesign the Web site I just write an article describing exactly how to navigate the site. Sometime between the time of my writing and the date of the article s publication the people at Sun Microsystems reorganize the entire Web site. It s as dependable as the tides. Anyway the Java Web site is in a constant state of flux. That s why I don t put detailed instructions for navigating the Java Web site in this book. Instead I offer some timeless tips. If this section s timeless tips aren t specific enough for you visit this book s Web site at http go bpjavafd. At the Web site you can find up-to-date instructions on getting the software you need. What number comes after The numbering of Java s versions is really confusing. First comes Java then Java then Java 2 Standard Edition J2SE . Yes the Java 2 numbering overlaps partially with the numbering. Next come versions and . After version comes version with intermediate stops at versions like . After the next version is version . That s no misprint. Version comes immediately after the versions although some people use the term Java when they mean Java . The formal name for version is Java 2 Platform Standard Edition . And to make matters even worse the people at Sun Microsystems are thinking about removing the extra 2. So after Java 2 you may see plain old Java . That s what