Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>From the <a href="http://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-8.1.1" rel="noreferrer">Java Language specification</a>:</p> <blockquote> <p>The access modifiers protected and private pertain only to member classes within a directly enclosing class declaration</p> </blockquote> <p>So yes, the private and the protected modifiers are not allowed for top level class declarations.</p> <p><strong>Top-level</strong> classes may be public or not, while <code>private</code> and <code>protected</code> are not allowed. If the class is declared public, then it can be referred to from any package. Otherwise it can only be referred to from the same package (namespace).</p> <p>A private top level class wouldn't make much sense because it couldn't be referred to from any class. It would be unusable by definition. <code>private</code> is OK for member classes to make a class referable to only it's enclosing class.</p> <p>A protected member class can be referred to from (1) any class of the same package and from (2) any subclass of the enclosing class. Mapping this concept to top level classes is difficult. The first case is covered by top level class with no access modifiers. The second case is not applicable for top level classes, because there is no enclosing class or something else from a different package with a special relation to this class (like a subclass). Because of this I think, <code>protected</code> is not allowed because it's underlying concept is not applicable for top level classes.</p>
    singulars
    1. This table or related slice is empty.
    1. POmultiple classes in a single file : modifier private not allowed here
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USGary
    1. USAndreas_D
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POmultiple classes in a single file : modifier private not allowed here
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThanks Andreas, but can you please make me understand why might the Java developers would have imposed this restriction ? I know this question may sound absurd, but I am curious. Thanks !
      singulars
      1. PO
      1. USJaguar
    2. COOK. Got the logic for private, but what about protected ?? 'Protected' is certainly more open than the 'default' specifier - which has been allowed !
      singulars
      1. PO
      1. USJaguar
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload