This week learning a set of knowledge, grasp the concept of the collection, a collection that is similar to but different from the array of arrays, collections often from the list, Set, Map interfaces, List orderly, repeatable, Set disorder can not be repeated , Map key-value pair, unique key values are not unique;
Other master collection interfaces used ARRLIST the like, and a method of use of the class, such as
void addFirst (object obj) is inserted into the first collection
void addLast (object obj) is inserted into the end of the collection
object getfirst () to get the first element;
Grasp the concepts and generic application in the set of generic, reflect the nature of parameterized types can be used for classes, interfaces, methods;
Master set of common methods and traverse, the use of iterators, which are more common method of collection, not an exhaustive list; there are three main loop through the collection, for loop, foreach, iterator iteration;
Using the above knowledge using the complete set of student information management.
This week the time spent on the code, and a half hours a day.
Learning java one hour a day.
Next week intend to learn java file management.