Java
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The Java enums value is used with generics
I need something like this: public enum Enum { ENUM1<Class1>(Class1.class,"A DESCRIPTION",new Class1()),ENUM…… -
Java – Autowired gives a null value in the custom constraint validator
I'm new to spring, and I've found answers to some questions on so Here are the links: Spring 3.1 Autowiring does not w…… -
Java – use xmlcoder to convert encoded XML to list
I'm writing an application that reads a lot of basic user details in the following formats; Once read in, it allows us…… -
Java – add image to jar
I want to set the icon to my JFrame I do the following: Image icon = Toolkit.getDefaultToolkit().getImage("src/images/…… -
Using AES to effectively encrypt files in Java
I am developing an application that should encrypt some small (less than 1MB) and large (about 500MB) files Solution S…… -
How to correctly use Java 8 option to conditionally return values or throw exceptions?
I want to implement code like the following to verify the input in my @ restcontroller so that I can avoid explicit nu…… -
Java8 stream – HashSet of bytes from intstream
I'm trying to create a HashSet < byte > bytes 1, 2, 3,... 9 using the Java 8 streams API I want to use intstream…… -
Java – the difference between transient final and transient final wrapper types for basic types
What is the difference between transient final int and transient final integer Use int: transient final int a = 10; Be…… -
Can I define custom types using primitives in Java?
For example, the following is the syntax correct code Double number = 10.0; Can I define my own class, such as price P…… -
Java 8 streams – collect potentially null values
I have the following code: private static <T> Map<String,?> getDifference(final T a,final T b,final Map<…… -
Java – shared disk with comps
I have a cluster with shared disks between different nodes How do I configure comp superscalar to consider this shared…… -
Java – how to determine the datasource being used by a hibernate session?
I have several unit tests that should use HSQLDB, but I know some of them are actually using physical databases I want…… -
How to create using Java DST embroidery file
I want to create one in Java DST embroidery file Is there a support library available? Or whether you can use java to …… -
Java – moves an object from a point in a linear path
I try to move a sprite in a straight line on the screen towards the position where I touch the screen. What I do is up…… -
Java – substitute for spark, fat and jar
I know there are at least two ways to put my dependencies into spark EMR jobs One is to create a fat jar, the other is…… -
Java – why doesn’t the acquire () method in semaphores have to be synchronized?
I'm using java to enter semaphores and reading this article http://docs.oracle.com/javase/1.5.0/docs/api/java/util/con…… -
How to use JUnit to test the spring controller method
Hi, I'm new to spring and JUnit There is a method in my controller I want to write JUnit (getpersons ()) for this meth…… -
Java – what is the reason for using openjdk?
I understand the difference between Oracle JDK and open JDK in some way But I can't find a reason to use open JDK, bec…… -
Java – GWT requestbuilder – cross site request
I'm trying to create a cross site request using the GWT request builder, but I can't make it work As you can see, this…… -
Performance loss of getserializedsize() in Java – protocol buffers
Does calling getserializedsize() on a GPB message cause performance degradation before serializing the message using w…… -
Java – use the for loop to get the Hamming distance between two strings
In this task, I need to obtain the Hamming distance between two strings sequence1 and sequence2 (the Hamming distance …… -
Error parsing string to date in Java
Yes, another Java date post:) My question: Simple standard code to test whether the insertion date is in the form of r…… -
java – System. Console () returns null from eclipse, but the command prompt is good
When I use eclipse Helios system Console, it always returns null However, when I use it directly from the command line…… -
@ parameters in JUnit 4
Can I use multiple @ parameters methods in JUnit test classes running with the parameterized class? @RunWith(value = P…… -
JavaFX WebView JDK 8 failed to load the self signed certificate
I'm trying to implement WebView into my JavaFX application, and I'm using JDK 8 to develop it When I use webengine to …… -
Java – jdbctemplate in Clause for string element
I use the namedparameterjdbctemplate for clause element, one of which seems to be list < string > Replace them w…… -
Java – pass joda time objects between app layers
I'm thinking about using joda time Solution At the beginning, only the most appropriate type (joda objects in this cas…… -
How to use index for O (1) random access sort set
You need a string collection, in which the inserted elements need to be sorted or non repeated, and can be retrieved b…… -
Override Java methods that require double arrays
Suppose I define the following Java interfaces: public interface A { public Double[] x(); } Then try to implement it…… -
Java – handling catastrophic exceptions
I read in the c# primer that if you don't know how to handle it, you shouldn't find exceptions Considering these sugge…… -
Java – is there a way to automate JUnit bean property testing?
Let's face it, writing bean property tests is probably the worst time usage But they need to finish For example If the…… -
Java – use dialoginterface Onclicklistener distinguishes a single dialog
We have two alertdialog objects AlertDialog dialog1,dialog2; Both dialog boxes are through alertdialog Created by buil……