StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
text
Body
copied!<p><strong>Edit:</strong> This answer is incorrect. See below for a counterexample.</p> <p>You've formatted your argument to <code>Method.invoke()</code> wrong. See the documentation <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/reflect/Method.html#invoke%28java.lang.Object,%20java.lang.Object...%29" rel="nofollow">here</a>. Instead of passing a single Object[] array of all arguments, you just pass multiple arguments to invoke. That's what the <code>Object... args</code> notation means: the method accepts any number of Objects.</p> <p>For your example, changing</p> <pre><code>m.invoke(c.newInstance(), new Object[] { new com.syncoorp.ftpsyncx.commons.SyncFile("bla") }); </code></pre> <p>to</p> <pre><code>m.invoke(c.newInstance(), new com.syncoorp.ftpsyncx.commons.SyncFile("bla")); </code></pre> <p>should fix the problem.</p> <hr> <p>Counterexample:</p> <p>Refl.java:</p> <pre><code>package com.drfloob.so; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Type; public class Refl { public static void main(String[] args) { try { Class c = Class.forName("com.drfloob.so.Refl2", true, ClassLoader.getSystemClassLoader()); for (Method m : c.getDeclaredMethods()) { System.out.println("Method: " + m.getName()); for (Type t : m.getGenericParameterTypes()) { System.out.println(" - type: " + t.toString()); } m.invoke(c.newInstance(), "test 1"); m.invoke(c.newInstance(), new Object[] {"test 2"}); break; } } catch (Exception e) { e.printStackTrace(); } } } </code></pre> <p>Refl2.java:</p> <pre><code>package com.drfloob.so; public class Refl2 { public Refl2() { System.out.println(Refl2.class); } public void doStuff(String str) { System.out.println(str); } } </code></pre>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

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