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I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?
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See the first line of your logcat:
java.lang.RuntimeException: setOnItemClickListener cannot be used with a spinner.
setOnItemClickListener cannot be used with a Spinner. Use setOnItemSelectedListener instead.
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Convert boolean to int in Java
What is the most accepted way to convert a boolean to an int in Java?
12 Answers
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JPA : How to convert a native query result set to POJO class collection
... Only in JPA 2.1 a ConstructorResult has been added to map return values a java class.
Also, for OP's problem with getting count it should be enough to define a result set mapping with a single ColumnResult
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Memory address of variables in Java
Please take a look at the picture below.
When we create an object in java with the new keyword, we are getting a memory address from the OS.
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In Scala how do I remove duplicates from a list?
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Have a look at the ScalaDoc for Seq,
scala> dirty.distinct
res0: List[java.lang.String] = List(a, b, c)
Update. Others have suggested using Set rather than List. That's fine, but be aware that by default, the Set interface doesn't preserve element order. You may want to use a Set implementati...
Java - get the current class name?
All I am trying to do is to get the current class name, and java appends a useless non-sense $1 to the end of my class name. How can I get rid of it and only return the actual class name?
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How does java do modulus calculations with negative numbers?
Am I doing modulus wrong? Because in Java -13 % 64 is supposed to evaluate to -13 but I get 51 .
14 Answers
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Java equivalents of C# String.Format() and String.Join()
... a newbie question, but are there equivalents to C#'s string operations in Java?
16 Answers
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How to check certificate name and alias in keystore files?
...f the alias is not found, it will display an exception:
keytool error: java.lang.Exception: Alias does not exist
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Java array reflection: isArray vs. instanceof
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Right, in Java, primitive data types are not objects, and don't extend java.lang.Object, so that makes sense. But instanceof can still be used to test for primitive arrays.
– erickson
Feb 13 '13 a...