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Does a finally block always get executed in Java?
...y a proof if you can show that this example always behaves this way on all Java platforms, AND that similar examples also always behave this way.
– Stephen C
Aug 20 '17 at 1:24
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Difference between JAX-WS, Axis2 and CXF
... Thanks, helps alot. So for the basic web service stuff i can just use java 1.6 to implement.And was their a implementation of jax-ws in java 1.5? Or it was added after 1.6? If i need additional features i can go with CXF?
– Maverick Riz
Jul 19 '12 at 18:52...
Limit a stream by a predicate
Is there a Java 8 stream operation that limits a (potentially infinite) Stream until the first element fails to match a predicate?
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Lightweight Java Object cache API [closed]
I'm looking for a Java in-memory object caching API. Any recommendations? What solutions have you used in the past?
7 Answe...
make arrayList.toArray() return more specific types
...yList<String>();
String[] a = list.toArray(new String[0]);
Before Java6 it was recommended to write:
String[] a = list.toArray(new String[list.size()]);
because the internal implementation would realloc a properly sized array anyway so you were better doing it upfront. Since Java6 the em...
How to generate serial version UID in Intellij
...ar settings)
File -> Settings -> Editor -> Inspections -> Java -> Serialization issues -> Serializable class without 'serialVersionUID' - set flag and click 'OK'.
(For Macs, Settings is under IntelliJ IDEA -> Preferences...)
Now, if your class implements Serializable, y...
What could cause java.lang.reflect.InvocationTargetException?
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From the Javadoc of Method.invoke()
Throws: InvocationTargetException - if the underlying method throws an exception.
This exception is thrown if the method called threw an exception.
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How to use Class in Java?
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All we know is "All instances of a any class shares the same java.lang.Class object of that type of class"
e.g)
Student a = new Student();
Student b = new Student();
Then a.getClass() == b.getClass() is true.
Now assume
Teacher t = new Teacher();
without generics the below is...
Using Application context everywhere?
...ntln("x:"+Y.xinstance+" y:"+X.yinstance);
}
}
Let's run the code:
$ javac A.java
$ java A
x:X@a63599 y:Y@9036e
x:null y:null
The second line shows that Y.xinstance and X.yinstance are null; they are null because the variables X.xinstance ans Y.yinstance were read when they were null.
Can ...
Avoid synchronized(this) in Java?
Whenever a question pops up on SO about Java synchronization, some people are very eager to point out that synchronized(this) should be avoided. Instead, they claim, a lock on a private reference is to be preferred.
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