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Java FileOutputStream Create File if not exists
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The condition is redundant. According to JavaDoc, createNewFile() itself atomically checks the existence of the file.
– aztek
Oct 2 '12 at 10:11
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Difference between object and class in Scala
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tl;dr
class C defines a class, just as in Java or C++.
object O creates a singleton object O as instance of some anonymous class; it can be used to hold static members that are not associated with instances of some class.
object O extends T makes the object O an inst...
Python naming conventions for modules
... Foo
from spam.eggs import Eggs, FriedEggs
It's a bit like emulating the Java way. One class per file. But with the added flexibility, that you can allways add another class to a single file if it makes sense.
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How can I remove a button or make it invisible in Android?
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Any way to enable/make it visible through javascript executor or anything?
– Ashok kumar Ganesan
Aug 11 at 7:00
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How to create your own library for Android development to be used in every program you write?
... Android Library, then click Next.
There's also an option to create a Java Library, which builds a traditional JAR file. While a JAR file is useful for many
projects—especially when you want to share code with other
platforms—it does not allow you to include Android resources or
manif...
Sort ArrayList of custom Objects by property
... return o1.getStartDate().compareTo(o2.getStartDate());
}
});
Since java-8
You can now write the last example in a shorter form by using a lambda expression for the Comparator:
Collections.sort(Database.arrayList,
(o1, o2) -> o1.getStartDate().compareTo(o2.getStart...
ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage? [closed]
... and also, its a library, so no distributed support, it's just an embedded Java library that you need to maintain.
In terms of Lucene usability, way back when (almost 6 years now), I created Compass. Its aim was to simplify using Lucene and make everyday Lucene simpler. What I came across time and ...
&& (AND) and || (OR) in IF statements
... doSomethingWith(str.charAt(0));
}
If we didn't have 'short-circuits' in Java, we'd receive a lot of NullPointerExceptions in the above lines of code.
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Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...ion has to say:
By default the heap dump is created in
a file called java_pid.hprof in the
working directory of the VM, as in the
example above. You can specify an
alternative file name or directory
with the -XX:HeapDumpPath= option. For
example -XX:HeapDumpPath=/disk2/dumps
will c...
How to change package name of an Android Application
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I don't think the original questioner needed to change Java package names too. Marc's should be the accepted answer.
– mpellegr
Aug 14 '13 at 21:48
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