Java
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Java – @ AspectJ cuts into all methods in the package
I have this working code for a specific package, but I want to configure it for all controllers, services and Dao pack…… -
Java – spring boot: persistence cannot be used
I've entered this stage, and - although I'm learning a lot - I'm starting to despair I've tried all the suggestions on…… -
Prepared declarations collected in the in clause of the datastex Cassandra CQL driver
I am trying to run the following query SELECT edge_id,b_id FROM booking_by_edge WHERE edge_id IN ? I bind Long's Java …… -
Why does the same code work differently in Java?
I wrote the following code in Java and C, but the output of these programs is different Can you describe it This is ja…… -
Libgdx collision detection with tiledmap
I'm trying to implement a collision detection system by tiling maps I have a 2D Pokemon style game with a tiled map Sp…… -
Java – custom string class creation
I tried to use Java. Net in my eclipse workspace Lang package to create a custom class string Now I'm confused 1) why …… -
Java – dagger 2
Using dagger 2, I tried to inject singleton objects at multiple locations within a single range However, it seems that…… -
Java – how to deal with underflow in scientific computing?
I'm studying probabilistic models. When reasoning about these models, the estimated probability may become very small …… -
Java – after reasoning, l must be specified as long, F and D as float and double
Here are a few related questions According to the title, why should you specify the variable type as long or float, do…… -
Java – how do I call a parent private method from child?
See English answers > How can a derived class invoke private method of base class? 7 public class A{ private in…… -
java – Mockito ClassCastException
The method I want to test has a for loop and the logic of each element in blist: class A { void someMethod(){ …… -
Java – timer – how to calculate the difference between two dates using joda time?
I want to use joda time to get the difference between P (start time) and Q (end time) twice P and Q may be different d…… -
How to use byte array as a short article in Java
I have a byte array with size n. this array really represents n / 2 with different sizes Before writing an array to a …… -
Java – mongodb selects all fields, groups them by one field, and sorts them by another
We have a collection of 'messages' for the following fields _id | messageId | chainId | createOn 1 | 1 …… -
Java – liquibase inserts bit column, mysql, column with too long data
In liquibase, I define a table with a column of type bit (1), <changeSet author="foobar" id="create-configuration-t…… -
java. io. StreamCorruptedException: invalid type code: AC
See English answer > StreamCorruptedException: invalid type code: AC1 private ArrayList<Cheque> cheques = nul…… -
Java – which file is the eclipse deployment assembly configured in?
I don't seem to be here The configuration was found in the project file I'm looking for a way to programmatically chan…… -
Java – lists all possible subsets
I have a list of elements (1, 2, 3), and I need to get a superset (no duplicate elements) of the list So basically I n…… -
Are Java bytes the same as c# bytes?
If the input parameter is an array of byte byte [], the native method in DLL will run in Java Is that because byte [] …… -
If so, what is the relationship between enum and enumeration
I want to know if the formal connection between enumeration interface and enum construct in Java is what? Solution No,…… -
Escaping JavaScript strings in Java
I need to turn it into a string in Java: <script type="text/javascript">document.write("<img src=\"UpArrow.pn…… -
Java – is there a simple way to concatenate several lines of text into a string without constantly adding line breaks?
So I basically need to do this: String text = "line1\n"; text += "line2\n"; text += "line3\n"; useString( text ); Ther…… -
Java – dependency injection EJB 3 – too many choices?
We are starting a new project based on EJB 3.0 I have a "spring" background (and love it), so loose coupling and testa…… -
How to use the button group swing control in Java?
How do I add radio buttons to a button group using NetBeans? Once they are added, how do I select radio buttons from t…… -
Java – Disable word wrapping in jtextpane
I can't find a simple way to close the word wrapping in jtextpane I can't use jtextarea because I need different color…… -
Java – too many open files (selenium phantom jsdriver)
In my embedded selenium / phantom JS driver, it seems that resources have not been cleaned up Running the client synch…… -
Java array initialization size is zero
When declaring arrays in Java, we must use the new keyword to dynamically allocate memory class array { public stati…… -
How to set an image as the background of a frame in the swing GUI of Java?
I have created a GUI using swing in Java I must now send a sample The JPEG image is placed as a background on the fram…… -
Java – how does GF3 (JDK 6) configure security protocols to remove outdated encryption
In the company where I work, we have a server GF 3.1 with CAS 1 (JDK 6), which authenticates users in another system A…… -
Java – what is the impact of using singletonehcacheregionfactory and ehcacheregionfactory in web applications on Hibernate Level 2 cache?
When integrating the two subsystems, we are forced to use multiple sessionfactory instances, which will cause problems…… -
Comparing doubles in Java gives strange results
I really don't understand why the following happens: Double d = 0.0; System.out.println(d == 0); // is true System.out…… -
Best practices for Java methods to return multiple values?
See English answers > how to return multiple objects from a Java method? twenty-three Solution 1 private boolean aM……