1、D 科技译文 Java Learning Path process Each persons study method is different, a persons method suits another person not necessarily, I only can discuss own study method. Because I study Java am study independently completely, has not asked others, therefore the study process basically is completely ones
2、elf tries to find out. I did not know whether this method is the quite good method, only could give everybody to provide refers. Studies Java first step installs good JDK, writes Hello World? Actually the JDK study is not so simple, has two questions about JDK is very easy to puzzle the Java program
3、mer continuously the place: Is the CLASSPATH question, actually said from the principle, is how must make clear JRE ClassLoader increase Class； Another question is package and the import question, how seeks the kind of way question. These two questions tried to find out clear, eliminated has studied
4、 Java and uses JDK the biggest barrier. The recommendation looked Wang Sen the Java Depth Experiences dangers, has carried on the thorough discussion to these two questions Second step is studies Java the grammar. The Java grammar is kind of C+, the basically mainstream programming language is not k
5、ind of C, is kind of C+, does not have what new thing, therefore the grammar study, probably was the quite a while time is enough. Only needs to pay attention is has the key words usage which several is not easy to make clear, public, protected, private, static, when uses, why has to use, how uses,
6、this possible need some people to direct, I initially was own ponder over completely, has spent the very long time. But afterwards I saw above this book spoke these concepts to Thinking in Java. Third step is studies Java the object-oriented programming language characteristic place. For instance in
7、herits, structure, abstract class, the connection, the method are many condition, heavy load, cover, Java exception handling mechanism. Said regarding a not object-oriented language background person that, I thought this process needs to spend the very long very long time, because studies in front o
8、f Java does not have C+ the experience, only then the C experience, I was have probably spent for a month, all made clear only then thoroughly these concepts, book example above repeatedly estimating, the revision, the attempt, repeatedly looked at that several chapter of contents, looked, looked ha
9、s not gotten down 5, comprehended only then thoroughly. But I thought if has the C+ experience, should 12 days time be enough. Then in this process, may have a look Thinking in Java this book, opposite is extremely thorough to the object explanation. What a pity is I studies, has not seen to this bo
10、ok, therefore own have spent the massive time, and estimates through own attempt learns. Fourth step starts a familiar Java kind of storehouse. The Java foundation class storehouse actually is JDK installs under the table of contents jreLibRt.Jar this package. The study foundation class storehouse studies rt.Jar. Inside the foundation class storehouse kind are extremely extremely many. It is said some more than 3,000, I have not counted. But said the most core truly regarding us only then 4, respectively is Java.Lang.*； Java.Io.*； Java.Util.*；
