Java
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Java – stop or terminate long-running queries in JDBC
Is there any way to stop or terminate long-running Oracle queries in JDBC? It usually ends up restarting the applicati…… -
Java – when will static nested classes (and static members in them) be loaded into memory?
Here, I try to use the internal static helper class to implement the singleton class for my database connection: packa…… -
Java – how can I call a method of a null object?
public class JavaPuzzler { public class JavaPuzzler { public static void main(String[] args) { JavaPuzzler ja…… -
Why does Java polymorphism not work in my example
I have these four Java claims: public class Rect { double width; double height; String color; public …… -
Java syntax for a list of comparable objects
I'm writing a method that takes unique parameters as a list of comparable objects and returns nothing I'm not sure wha…… -
What should be the size of the icon in the Java – alertdialog?
I'm trying to assign an icon to an alertdialog, but I keep getting a memory error (seems to be from the size of the ic…… -
Why does setting properties in a session sometimes fail in a java servlet?
I am developing a fairly simple web application using JSP and java servlet running on Tomcat I have been able to set p…… -
Java – how to exclude a single variable using tostrimbuilder
I have an object that contains many variables, but one of them is bytearray, for example public class DataWithFields {…… -
Java – how do I adjust the hue of a color code?
Maybe someone knows that one method in Java (Android) is to apply hue to color code? For example, if I have #1589ff an…… -
Java – in JBoss 7.1 A component named “XXX” has been defined in this module of 1
Timerservicedispatcher is not used in my application to create spring bean names However, the exception thrown by JBos…… -
Allow two or more mobile virtual machines to communicate on their own network
I want to create multiple servers that can communicate directly without using public IP They still need internet acces…… -
Java – the application starts searching for GPS when the application starts, not when needed
>I have an Android application that includes Google Maps V2 as part of the feature <uses-permission android:name…… -
Java – gson JSON parser array
I want to parse some JSON and parse the array Unfortunately, I can't figure out how to handle nested arrays in JSON JS…… -
How does Java and Android darken ImageView
As IOS developers told me, IOS darkens the image when someone clicks it (I don't know how real it is), so I need the s…… -
Java – validationexception: unable to find default provider
I found three entries in the stack overflow: javax. validation. ValidationException: Unable to find default provider j…… -
File I / O: read from one file and write to another (Java)
I'm currently working in a lab in my CPE class. We have to create a simple program from Txt file and print them to dif…… -
Java – non null attributes refer to null or instantaneous values of persistent values
I try to use JPA 1 to persist two different entities and use hibernate to implement it Parent entity class @Entity @Ta…… -
Java – is BigInteger thread secure?
I need to update the global BigInteger value through multiple threads – is BigInteger thread safe? Solution BigInteger…… -
Java – how to improve applications to avoid heap space problems
I have an application that works with many custom objects created in methods and never needs to be outside of them The…… -
Java – converting from double to int does not always just discard the decimal part
I'm experimenting with the code I found here the Java specialties' newsletter public class MeaningOfLife { public st…… -
How to install Java 7 EE SDK and download it as Mac OSX SH file
I'm new to developing Java on Mac OS X I want to download the Java 7 EE SDK so that I can use Java for desktop / mobil…… -
Java – register all classes annotated with @ myannotation
I have an annotation @ myannotation, which I can use to annotate any type (class) Then I have a class named annotatedc…… -
Can datastex Java drivers be safely used in EE containers?
com. datastax. driver. core. The documentation for the session class illustrates this However, the general recommendat…… -
String – replace strsubstitute with JRE Library
I'm currently using org apache. commons. lang.text. Strsubstitute: Map m = ... substitutor = new StrSubstitutor(m); r…… -
Java – Oracle driver memory leak – Tomcat
We are using tomcat-7.0 33. Spring 3.0. 1 and JPA use Tomcat JNDI data source Using ojdbc6 Oracle 10g. Jar (latest) ba…… -
Java – Maven: no source compilation
I'm following "building Java projects with Maven"（ https://spring.io/guides/gs/maven/#scratch ）, when I run 'MVN com…… -
Nested enumeration in Java?
I want to define some enumerations for the various Ajax services provided in my web application, such as: Enum Service…… -
What happens if you use deprecated methods / functions in Java?
Any problems with using deprecated features in Java? If so, why keep this function? Is it a bad habit to use disapprov…… -
Java – why are the values of class HashSet sorted when I use iterators?
I have the following code on the main method. When I traverse set and print the value, the value has been sorted What'…… -
Java – httpmediatypenotacceptableexception after upgrading to spring 3.2
After upgrading the spring MVC application to spring 3.2, when accessing some of my URLs, I receive the following exce…… -
Java – how do I test the Maven prototype I just created?
I've created several prototypes for projects that work now, but I want to be able to verify that the code generated fr…… -
What is the largest adjustable byte buffer available in Java?
I need the byte buffer class in Java for single thread use When the buffer is full, the buffer should be resized inste……