Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>This is because your IDE (misleadingly, in this case) sees a possible autoboxing.</p> <p>For instance, if you create a <code>List&lt;Integer&gt;</code>, you can add an <code>int</code> to it: there is autoboxing from <code>int</code> to <code>Integer</code>. Unxobing is the reverse: <code>Integer</code> to <code>int</code>. Note that both boxing and unboxing only apply to numeric primitive types (BUT NOT to <em>arrays</em> of them).</p> <p>Here, there is no doubt that the method with <code>double</code> will be chosen eventually (since it is more specific), but your IDE considers that there exists a possible ambiguity.</p> <p>This example code:</p> <pre><code>public final class Test { public static void item(Object a, Object b, String c, String d) { System.out.println("Object"); } public static void item(double a, double b, String c, String d) { System.out.println("double"); } public static void unbox(final double d) { System.out.println("Unboxed!"); } public static void useIt(double a, double b, Double c, Double d) { // primitives item(a, b, "", ""); // cast to corresponding classes item((Double) a, (Double) b, "", ""); // objects item(c, d, "", ""); // unboxed by the "unbox" method which takes a "double" as an argument unbox(new Double(2.0)); } public static void main(final String... args) { // Autoboxing of the third and fourth argument useIt(1.0, 1.0, 1.0, 1.0); } } </code></pre> <p>outputs:</p> <pre><code>double Object Object Unboxed! </code></pre> <p>Note however that you cannot call:</p> <pre><code>useIt((Double) a, b, c, d); // No autoboxing of "b" </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POWhy can't Java distinguish between objects and numbers?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USfge
    1. USfge
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    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. VTUpMod
    1. COyes but the jvm should not box because of the overload. The code he posted correctly compiles for me if i replace someString and someOtherString with ""
      singulars
      1. PO
      1. USGiovanni Caporaletti
    2. CO@TrustNoOne yes, I've mentioned that too.
      singulars
      1. PO
      1. USfge
    3. COI'd like to know where the downvotes came from and why...
      singulars
      1. PO
      1. USfge
 

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