Recent Posts
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Java GetClass () returns a class. How can we get a string?
When I use system out. Println (obj. Getclass()) it doesn't give me any errors Return a class type from getClass () as…… -
Zero padding and left padding integers in Java (non decimal format)
Has been answered for integers printed in decimal format, but I'm looking for an elegant way to do the same with integ…… -
java – WebSphere 7. Inject EJBs from another application
I tried to inject EJB with @ EJB annotation: >When I inject an EJB into another EJB in the same ear, it works norma…… -
Java – what happens to its iterator when I sort a list?
Suppose I have a list object and an iterator for that list Now I use Java util. Collections. Sort() sorts the list >…… -
Strange default method behavior with different Java versions
Suppose I have the following class hierarchy: interface Collection<E> { Collection<E> $plus(E element)…… -
Java annotation values are provided dynamically
I want to provide comments for some values generated by some methods I've tried so far public @interface MyInterface {…… -
Java – use the super keyword in subclasses to access private fields of superclasses
For coding projects, I have a class that contains nested classes Nested classes subclass in the same external class It…… -
Java – interfaces and concrete classes
Below I have a person interface, an implementation class and a driver class, which initializes person with a name and …… -
Java – spring – constructor injects and overrides the parent definition of nested beans
I read the resources for spring 3 in inheriting bean definitions, but I'm confused about what's possible and impossibl…… -
java – Short toHexString
There is a method integer Tohexstring() and long toHexString(). For some reason, they did not implement short toHexStr…… -
Java – how to inject beans into ApplicationContext before loading from a file?
I have a filesystemxmlapplicationcontext. I want the bean defined in XML as a constructor parameter, a bean that is no…… -
Java – ant: how to compile jars containing source attachments
How to create a jar containing source attachments using ant? Maven did it, but I haven't been vivid since 2003 (well, …… -
Java – mockito mock object returns null
Hi, I'm trying to implement some tests for my JSF application and mocks. I use mockito (I also use springs) @RunWith(M…… -
Should I manually implement the spring data warehouse method using the Java 8 default method?
When using the new spring data Evans distribution, I'm glad to use some good things to use with Java 8 One is the defa…… -
Set your own class as the key in Java HashMap
I have a class that I want to set as a key in HashMap I have implemented the CompareTo method of this class But when I…… -
Java – Eclipse: hover and disconnect from the debugging Perspective
Due to the upgrade of eclipse (Galileo build 20090920-1017), the value of the variable is no longer displayed in hover…… -
Java – unable to create eclipse data source to Oracle 12C. Jar But 11g’s work
When I open the data source Explorer window and try to create a new connection profile, I select "oracle", Oracle thin…… -
Java – dynamic change persistence unit – JPA
persistence. The persistence unit in XML is created during the construction of the application Since I want to change …… -
Java – could ThreadLocal be useful?
So I just saw someone try to use a ThreadLocal < atomicinteger > in some java code And it always seems useless: …… -
How do you feel about JavaFX?
I have done a lot of work in ActionScript 3.0, and I also like programming in Java Is JavaFX right for me? What is the…… -
Java – is it OK to add the default implementation to the method representing the listener’s interface?
A library is used in my project This library has an interface with about 15 methods The purpose of this interface is t…… -
Java – jcombobox itemstatechanged event is called twice at a time
@H_ 419_ 2@resultCombo = new JCombo@R_611_2419 @(); resultCombo. addItemListener(new ItemListener() { @Override public…… -
Using “forbidden” classes in Java?
My employer needs an extension org eclipse. rse. core. subsystems. The Java class of subsystem for eclipse plug - ins …… -
Java – how to initialize BigInteger after creating an instance (constructor cannot be called)
Imagine an instance of BigInteger, so how do you initialize it after you create it? For example: BigInteger t = new Bi…… -
Java – docker settings
I'm reading docker today and even trying to run it on vagrant's laptop But I still don't know why, especially how to i…… -
Multithreading – how do I manage the return values of threads?
I created a class derived from TThread to execute queries in the background I want this class to be separate from the …… -
Java – how do I retrieve the last inserted value in my database?
Anyone can tell me about the query for the last inserted value in the database column The problem is that after using …… -
Java – JPA – eclipse link – how to change the default mode
I am using Weblogic and Oracle to program web applications public class MyCustomizer implements SessionCustomizer{ …… -
Java: what is jitc’s reflection on inflation?
I recently came across this interesting word and searched on the Internet to learn more However, the information I fou…… -
Java – where the result set is stored when using JDBC and Oracle drivers
Once I use JDBC with the Oracle driver and run the select query, do I store the query results in Oracle memory or file…… -
Java – prevent SWT scrolledcomposite from eating part of it
What did I do wrong? This is my code excerpt public void createPartControl(Composite parent) { parent.setLayout(new …… -
How do I format the Spanish month in a sentence using simpledateformat?
This is my code: /* package whatever; // don't place package name! */ import java.util.*; import java.lang.*; import ……