Java Capriccio: Scenario_2 (Java随想,第二部分)

1.Create & Destroy an object    
     a.public static Type valueOf(String name);
     b.factory method: Type createByName(String name);
     These methods can return subclass type
        [可返回子类型,而 Constructor 则不行]
     Do never use 'new' to create object
2.Avoid of re-create object
3.Eliminate of outdated references

     if(size==0)
        this.array[size]==null

4.Carefully use exceptions
        Exceptions will effect performances of your application
5.Do never re-initialize variable

-------- period 09/02,2010 1:30 pm

6.Make the modifier of class 'final' as far as possible
        So does the method!
7.Make full use of local variables {which stored stack}