Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I don't know, if this is what you really want. Perhaps you could give some more information about what you want to achieve with it. But if you want to access <code>Lookup.IMPL_LOOKUP</code>, you can do it like in this code sample:</p> <pre><code>public class Main { public static void main(String[] args) { Lookup myLookup = MethodHandles.lookup(); // the Lookup which should be trusted NestedTestClass ntc = new Main().new NestedTestClass(); // test class instance try { Field impl_lookup = Lookup.class.getDeclaredField("IMPL_LOOKUP"); // get the required field via reflections impl_lookup.setAccessible(true); // set it accessible Lookup lutrusted = (Lookup) impl_lookup.get(myLookup); // get the value of IMPL_LOOKUP from the Lookup instance and save it in a new Lookup object // test the trusted Lookup MethodHandle pmh = lutrusted.findVirtual(NestedTestClass.class, "gimmeTheAnswer", MethodType.methodType(int.class)); System.out.println(pmh.invoke(ntc)); } catch (Throwable e) { e.printStackTrace(); } } // nested class with private method for testing class NestedTestClass{ @SuppressWarnings("unused") private int gimmeTheAnswer(){ return 42; } } } </code></pre> <p>It works with JDK 7, but could break in JDK 8. And be cautious! My antivirus gave an alarm when I executed it. I think there isn't a public or clean way to do it.</p> <p>I had a similar issue and finally found a solution: <a href="https://stackoverflow.com/questions/16040726/access-non-public-java-native-classes-from-jdk-7">Access non-public (java-native) classes from JDK (7)</a>.</p>
    singulars
    1. This table or related slice is empty.
    1. POInvoke private method with java.lang.invoke.MethodHandle
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USThorben
    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. This table or related slice is empty.
    1. COI know how to do that, but I have asked for **a public way to obtain it**.
      singulars
      1. PO
      1. USMarcin Wisnicki
    2. COAnd by "public way" I mean using public API.
      singulars
      1. PO
      1. USMarcin Wisnicki
    3. COI don't think that this is possible with a public API. Accessing private fields or methods directly by public methods would break Java's security system.
      singulars
      1. PO
      1. USThorben
 

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