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1、Java Learning Path processEach 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 oneself trie
2、s 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 programmer cont
3、inuously 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 Java an
4、d uses JDK the biggest barrier. The recommendation looked Wang Sen the Java Depth Experiences dangers, has carried on the thorough discussion to these two questionsSecond step is studies Java the grammar. The Java grammar is kind of C+, the basically mainstream programming language is not kind of C,
5、 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, this poss
6、ible 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 inherits, st
7、ructure, 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 of Java doe
8、s 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 has not gott
9、en 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 book, theref
10、ore 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.J
11、ar. 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.*; Java.Sql.*; These four packages study, each package study all
12、 may write thick teaching material, but Oreilly also truly is does this. I thought if time quite tight, is impossible through to read four books to study. I thought the quite good study method is such: First must read through entire package the frame, understood entire package class, interface, the
13、exception constitution, should better be can find the introduction entire package frame the article. These introduced specially package of books the first several chapters should be these overall frame content introductions. Is not must be familiar with each kind of usage to the package of overall f
14、rame assurance, which attributes remembers it have, the method. Wants to record also cannot remember. But is must know which aspects the package does have a kind of constitution, these kind of uses are any, most core several classifications maybe complete any function. I in the time which trains to
15、the human generally is a class speaks a package, therefore not impossible detailed introduction each kind of usage, but I repeatedly stress, how do I speak these packages to you am must tell you a kind of method am transfer, also does not request you to remember the kind of method transfer, but want
16、s you to understand, which kinds Java has provided to us, each kind is uses in any situation, when I meet the question the time, I knew which kind, or which several kind of combinations can solve my problem, Thatall! When we write the procedure specifically time, so long as you knew which kind should complete your work with to be enough. Codes, the concrete method transfer, writes the code, Documentation, all things all inside Documentation, will not reque
