Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <blockquote> <p><em>Can anyone tell me the advantage of the synchronized method over the synchronized block with an example? Thanks.</em></p> </blockquote> <p>There is not a clear advantage of using synchronized method over the block. </p> <p>Perhaps the only one ( but I wouldn't call it an advantage ) is you don't need to include the object reference <code>this</code>.</p> <p>Method:</p> <pre><code>public synchronized void method() { // blocks "this" from here.... ... ... ... } // to here </code></pre> <p>Block:</p> <pre><code>public void method() { synchronized( this ) { // blocks "this" from here .... .... .... .... } // to here... } </code></pre> <p>See? No advantage at all. </p> <p>Blocks <strong>do</strong> have advantages over methods though, mostly in flexibility because you can use another object as lock whereas syncing the method would lock the entire object.</p> <p>Compare: </p> <pre><code>// locks the whole object ... private synchronized void someInputRelatedWork() { ... } private synchronized void someOutputRelatedWork() { ... } </code></pre> <p>vs. </p> <pre><code>// Using specific locks Object inputLock = new Object(); Object outputLock = new Object(); private void someInputRelatedWork() { synchronized(inputLock) { ... } } private void someOutputRelatedWork() { synchronized(outputLock) { ... } } </code></pre> <p>Also if the method grows you can still keep the synchronized section separated:</p> <pre><code> private void method() { ... code here ... code here ... code here synchronized( lock ) { ... very few lines of code here } ... code here ... code here ... code here ... code here } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POIs there an advantage to use a Synchronized Method instead of a Synchronized Block?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USOscarRyz
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POIs there an advantage to use a Synchronized Method instead of a Synchronized Block?
      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. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTDownMod
    1. COA benefit to the consumer of the API is that using the synchronized keyword in the method declaration also explicitly declares that the method synchronizes on the object instance and is (presumably) thread-safe.
      singulars
      1. PO
      1. USScrubbie
    2. CO@OscarRyz Thnx it helped me a lot as well... +1 for this explanation....
      singulars
      1. PO
      1. USamod
    3. COso "this" object get locked in less time - so if possible, sync in block rather that the entire method:)
      singulars
      1. PO
      1. USBaiyan Huang
 

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