包含标签：Java 的文章
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Java – lists and lists
Why lose type security when using list and use list < Object >? Aren't they basically the same? Editor: I found …… -
JPA – @ onetoone unidirectional and bidirectional
I have two examples, the first is @ onetoone one-way mapping and the second two-way mapping In one-way mapping, the ow…… -
Java – JPS cannot connect to remote jstatd
I'm using jstatd to query a remote JVM using JPS so that I can eventually monitor it using visual VM I use jstatd to r…… -
Java – create a command console
I have an unusual question: how to use swing to create a "command console"? What I want is the console where the user …… -
Java – default timeout for httpcomponent client
I can't find any documents on the default httpparams of httpclient 4.1? What is the default socket timeout when I do a…… -
Java – type A has defined an error
I tried to search for a solution, but I found that I didn't know how to apply it in this case Please help me correct m…… -
Java – use add () in the fragmenttransaction addToBackStack(),add(). Detach() and replace() What’s the difference between addtobackstack()?
In the FragmentTransaction project on Android docs, the method replace () is described, which is the same as calling t…… -
Java – how do I map spring MVC controllers to URIs with and without trailing slashes?
I have a spring controller with several requestmappings with different URIs My servlet is "UI" The servlet's base URI …… -
Bring components on JPanel to the front end (Java)
In VB, you can use zorder Before you ask, no, I didn't use the layout manager in this case If you have two components …… -
Switch scenes in JavaFX
I have a problem closing the current scene and opening another scene when selecting MenuItem My main stage codes are a…… -
The best way to merge and remove duplicates from multiple lists in Java
I have a situation where I will receive 2 ArrayList < widget > I need to be able to merge all lists and delete a…… -
Java – Apache wink and Apache CXF jax-rs implementation
Why does Apache have two implementations of jax-rs? CXF seems to be a huge bundle, including Jax WS and Jax rs. blinki…… -
Java – use JNA to link to a custom DLL
How to access customization using JNA lib / . DLL function? thank you. Solution Example (from Wikipedia): import com.s…… -
Sparksql and explode on dataframe in Java
Is there a simple way to use array column explosion on sparksql dataframe? It's relatively simple in Scala, but this f…… -
Java – added = = confused behavior
There is already an answer to this question: > integer wrapper objects share the same instances only within the val…… -
Java – continue to develop plug-ins
There is an Eclipse Plug-in managed by maven, which contains the following configurations: <project xmlns="http://m…… -
Java – sqlitedatabase multi thread locking mode
I use this class to manage connections to the underlying SQLite database public class BasicDataSource { protected…… -
Java – string decoding UTF-8
How do I decode a UTF-8 string on Android? I tried to use this command, but output the same input: URLDecoder.decode("…… -
Java – transaction. In hibernate What is commit()?
transaction. What does commit () do? Account account = new Account(); account.setId(100); account = (Account) session.…… -
Java: the difference between collections and “data structures”
In Java, I don't understand the relationship between sets and "data structures" In my opinion, set refers to list, set…… -
Java – automatically generate source code and document jars in NetBeans
Is there any way to automatically generate source code and Javadoc jars in NetBeans? Ideally, I want to put my source …… -
Java – the contents of the window disappear when minimized
I have a simple class that draws a line when the mouse is dragged or a point when the mouse is pressed (released) When…… -
Java – “a value of type string cannot be opened below the source level..” error
I am using eclipse to develop a java program I had to downgrade JRE and JDK from 1.7x to 1.6 Now everything points to …… -
How does Java’s dynamic proxy actually work?
I know how to use dynamic proxies in Java, but what I don't understand is how VM actually creates dynamic proxies Does…… -
Java – how to set the ForeignKey name when I have @ manytomany
I am using JPA class to create database If we have a manytoone relationship, we can override the ForeignKey name, as s…… -
Java – JPA POJO as data object
What are the best practices for using JPA entities? Since the JPA entity is only a POJO, is it appropriate to use this…… -
Jpa-2.0 – execute @ postload_ after_ Eagerly extract?
Using JPA2 / Hibernate, I created an entity a with a one-way mapping to entity x (see below) In a, I also have a tempo…… -
How do I register JavaScript callbacks in a java applet?
I'm developing an invisible Java applet that will be completely controlled by JavaScript I can easily call the Java me…… -
Java – how to disable errorpagefilter in spring boot?
I am creating a soap service that should run on Tomcat @Configuration @EnableAutoConfiguration(exclude = ErrorMvcAutoC…… -
Java – automatically redirect from one JSP page to another
Once the home page is loaded, can users be automatically redirected to the second JSP page@ H_ 502_ 2@ resolvent Solut…… -
Using Java’s recursive expression evaluator
I want to write an expression evaluator that only does addition and subtraction I have a simple algorithm to do this; …… -
Java – does JSF use JSP?
I'm learning JSF and I have some questions I know JSF is a UI framework for making pages. I'm using it and successfull……