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Is there any good dynamic SQL builder library in Java? [closed]
Anyone knows some good SQL builder library for Java like Squiggle (not maintained anymore it seems). Preferably, a project in active development.
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What does `someObject.new` do in Java?
In Java, I have just found out that the following code is legal:
5 Answers
5
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What is the default access modifier in Java? [duplicate]
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From Java documentation
If a class has no modifier (the default, also known as package-private), it is visible only within its own package (packages are named groups of related classes — you will learn about them in a later ...
How to create war files
...ns
We'll assume that you have your code organized like:
${basedir}/src: Java files, properties, XML config files
${basedir}/web: Your JSP files
${basedir}/web/lib: Any JARs required at runtime
${basedir}/web/META-INF: Your manifest
${basedir}/web/WEB-INF: Your web.xml files
Set up
Define a set...
How to convert object array to string array in Java
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only on Java 1.6 and above
– newacct
Jul 5 '09 at 9:53
10
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CharSequence VS String in Java?
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But keep in mind this caveat from the CharSequence javadoc: This interface does not refine the general contracts of the equals and hashCode methods. The result of comparing two objects that implement CharSequence is therefore, in general, undefined. Each object may be impleme...
How to use MDC with thread pools?
...f things that need to be processed in the background. For that we use the java.concurrent.ThreadPoolExecutor and java.util.Timer classes along with some self-rolled async execution services. All these services manage their own thread pool.
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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...}
object NOTworking extends App {
new Test().doIT
}
class Test extends java.io.Serializable {
val rddList = Spark.ctx.parallelize(List(1,2,3))
def doIT() = {
val after = rddList.map(someFunc)
after.collect().foreach(println)
}
def someFunc(a: Int) = a + 1
}
or you make someF...
Converting a date string to a DateTime object using Joda Time library
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FYI, the troublesome old date-time classes such as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 & Java 9. See Tutorial by Oracle. And the java.time classes are thread-safe, unlike ...
Why generate long serialVersionUID instead of a simple 1L?
...now should be compatible but which causes serialization to break.
See the Java Serialization Spec for more details.
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