Thinking in Java is a book’s name, a good book. This afternoon, I did a hard work to find a method which can check that a char is a letter or not, but got no answer. I complained that Java is too hard to learn if I don’t know any class library and its method, everything I need to deal by myself, then MagicPig advise us to read the book Thinking in Java, said that it will be the best book to learn Java.

I spent nearly the hole day to type some simple code of the text book, and get many errors some seems strange, there may be a good experiences and wealth, because it can make me not to do the stupid thing again and again. But there is still a little problem need to fixed, which I can’t use Ant in Eclipse to compile a .jar file and to run the .jar file by double-click, there is always a error hint break out when I try to run the .jar file by double-click, I doubt there is something wrong in the build.xml file, but I don’t know how to correct it also I used Baidu and Google for a solution.

For the course, and for learning a useful skill, start coding in Java. Java is the third programming language I learned strictly, before it are Pascal and C. There is more easy that when you have used a programming language skilled to study another, because the ideas are the same, only the method to get the result are different. The last words may be wrong, because Java is an OO(Object Oriented) language, which is different to the Process-Oriented language likes Pascal/C, and I said I learned C only as I didn’t know the ideas of OO in C++.

In Java, everything is long, the name of class, function, variable, too long to type… I love C, I love VIM, which can do anything use keyboard only. Our Java text book used the Hungarian notation ordinary, so it’s a good way to make my coding habit standardization.