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What's the purpose of META-INF?
In Java, you often see a META-INF folder containing some meta files. What is the purpose of this folder and what can I put there?
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How to test if a double is an integer
...gative zero, then the result is the same as the argument." docs.oracle.com/javase/6/docs/api/java/lang/…
– Tim Schmelter
Mar 27 '12 at 22:27
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How to activate JMX on my JVM for access with jconsole?
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The relevant documentation can be found here:
http://java.sun.com/javase/6/docs/technotes/guides/management/agent.html
Start your program with following parameters:
-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=9010
-Dcom.sun.management.jmxremote.rmi.po...
How to parse JSON in Java
...("post_id");
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}
You may find more examples from: Parse JSON in Java
Downloadable jar: http://mvnrepository.com/artifact/org.json/json
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How to convert a java.util.List to a Scala list
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import scala.collection.JavaConversions._
will do implicit conversion for you; e.g.:
var list = new java.util.ArrayList[Int](1,2,3)
list.foreach{println}
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How to extract numbers from a string and get an array of ints?
... sign -- optionally. \d matches a digit, and we need to write \ as \\ in a Java String though. So, \d+ matches 1 or more digits.
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Why is an array not assignable to Iterable?
with Java5 we can write:
5 Answers
5
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How to get Scala List from Java List?
I have a Java API that returns a List like:
6 Answers
6
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Why does SSL handshake give 'Could not generate DH keypair' exception?
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The problem is the prime size. The maximum-acceptable size that Java accepts is 1024 bits. This is a known issue (see JDK-6521495).
The bug report that I linked to mentions a workaround using BouncyCastle's JCE implementation. Hopefully that should work for you.
UPDATE
This was report...
Java: Calling a super method which calls an overridden method
...even achieve the desired effect using Reflection (see the documentation of java.lang.reflect.Method.invoke(Object, Object...)).
[EDIT] There still seems to be some confusion. Let me try a different explanation.
When you invoke foo(), you actually invoke this.foo(). Java simply lets you omit the th...