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You need a visual Java library that supports automatic layout

I need a java graphics library for visualization that I can add to my own applications I find JGraph very suitable for……

Java

2020-02-13

Email – does JavaMail support server push?

Does JavaMail support push notification of new e-mail through the server? If so, where is the document? If not, is the……

Java

2020-02-13

Java – parsing JSON objects and JSON arrays using gson

I have a JSON that is a single object or an array of the same object Is there any way to parse this data using gson, w……

Java

2020-02-13

Java – why call close() on resultset and connection instances?

When I no longer need to use instances of resultset and connection in my program, why call on these two methods What a……

Java

2020-02-13

Java – association between: webapplicationcontext of springioccontainer | ApplicationContext |

background After reading 1 2 3 4 5 6 links, I come to the following conclusions – As spring, MVC is designed in a stan……

Java

2020-02-13

How to limit the number of entries in a Java hash table?

Is there a technique so that I can specify a number n so that when inserting the (N1) th entry, the oldest entry is de……

Java

2020-02-13

Java – when I read an image, the source raster array and the source color space component do not match

See English answers > illegalargumentexception: numbers of source raster bands and source color space components do……

Java

2020-02-13

Java – unable to parse org. XML eclipse. jdt. annotation. Nonnull type It is from what is needed Class file indirectly referenced

When I use the Java 8 method to reference the double colon operator (:) and the new operator (for example, mytype:: ne……

Java

2020-02-13

Java – generationtarget encountered an exception to accept the command: error executing DDL through JDBC statement

I'm a novice in the hibernate world. In the face of, WARN: GenerationTarget encountered exception accepting command : ……

Java

2020-02-13

Java: do sth in a period of time

I need a few lines of Java code to run x% at random Pseudo code: boolean x = true 10% of cases. if(x){ System.out.p……

Java

2020-02-13

Combining Java swing and java3d: concurrency performance issues

I combine swing with Java 3D The operation of swing component shall be completed using event scheduler thread, while t……

Java

2020-02-13

Java – what is the difference between a normal interface class and an abstract class with only abstract methods?

I'm just curious if they have any different treatment For example, if we have: Interface: public interface Test { ……

Java

2020-02-13

Java PDF manipulation and rendering

I hope this problem will become a comprehensive guide to PDF manipulation and rendering in Java I have a fairly compre……

Java

2020-02-13

How to send fix messages using quickfix / J

I need a simple example of how to initialize a session and send a fix message I have this initial code: SessionSetting……

Java

2020-02-13

Can parent package classes be accessed from child package classes in Java?

Can I access from a Java sub package class? Please explain me any one? Example package a.a1 A2 contains class sub pack……

Java

2020-02-13

Java – sharing under IP

How do I list all available shared folders under a specific IP address? Analog code: IP ip = new IP("10.0.0.9"); for(……

Java

2020-02-13

Java code for generating reports using birt

I have some data in XML, which contains few records, and I have created an RPT file Now, how can I call birt to genera……

Java

2020-02-13

Java – multiple clamps in one body or multiple bodies?

Suppose I want to create 1000 or even 5000 static body lines on the screen What I want to know is the difference betwe……

Java

2020-02-13

Fast port forwarding in Java

I built a simple application to open the server socket. When connecting, it connects itself to another server socket o……

Java

2020-02-13

Java – Maven exec plug-in classnotfoundexception

I am using the Maven exec plug-in to run a Java application from the command line. The command is MVN exec: Java I'm a……

Java

2020-02-13

Java – how does Lombok generate code to an existing class?

I can use annotation processor to generate classes from scratch, but I can't modify Lombok - like classes I searched t……

Java

2020-02-13

Do characters have intrinsic int values in Java?

Why does this code print 97? I haven't assigned 97 to 'a' anywhere else in my code before public static void permutati……

Java

2020-02-13

Create a stand-alone Java websocket client endpoint?

I want to create a websocket endpoint client in Java (as pure as possible, no framework), but almost all the examples ……

Java

2020-02-13

Java – spring @ transactional annotation cannot use automatic wiring?

My application uses spring auto wiring to configure beans I just tried to add @ transactional, and it seems that I did……

Java

2020-02-13

Java TCP Socket Sniffing

I use TCP sockets to transfer data between the server and client programs using a specific port number on the same com……

Java

2020-02-13

Java – simpledateformat cannot handle 12 months correctly

I'm trying to parse the string "2 / 20 / 2012 12:00:00 am" using simpledateformat. It seems that it will come out at 1……

Java

2020-02-13

Java – jax-ws, authentication and authorization – how?

What is the best way to authenticate and authorize in a web service? I am developing a set of Web services that requir……

Java

2020-02-13

Where did ORM fail?

I often hear people attack ORM for lack of flexibility and "vulnerability abstraction", but you really don't know why ……

Java

2020-02-13

Java – import CSV data using Apache poi

How to effectively import CSV data through Apache POI? If I have a very large CSV file that I want to store in my Exce……

Java

2020-02-13

Simulating duck typing in Java

Question: I think I can generally access any property / field in Java Ojbect in Java, just like dynamic language (groo……

Java

2020-02-13

Java – access request objects from custom JSP Tags

I tried to make a set of custom tags that encapsulate form elements (markup and validation) There is a way to easily r……

Java

2020-02-13

Separate logic and GUI in Java

I am implementing a game in Java, using the classes shown below to control the game logic When I explain my problem, I……

Java

2020-02-13

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You need a visual Java library that supports automatic layout

Email – does JavaMail support server push?

Java – parsing JSON objects and JSON arrays using gson

Java – why call close() on resultset and connection instances?

Java – association between: webapplicationcontext of springioccontainer | ApplicationContext |

How to limit the number of entries in a Java hash table?

Java – when I read an image, the source raster array and the source color space component do not match

Java – unable to parse org. XML eclipse. jdt. annotation. Nonnull type It is from what is needed Class file indirectly referenced

Java – generationtarget encountered an exception to accept the command: error executing DDL through JDBC statement

Java: do sth in a period of time

Combining Java swing and java3d: concurrency performance issues

Java – what is the difference between a normal interface class and an abstract class with only abstract methods?

Java PDF manipulation and rendering

How to send fix messages using quickfix / J

Can parent package classes be accessed from child package classes in Java?

Java – sharing under IP

Java code for generating reports using birt

Java – multiple clamps in one body or multiple bodies?

Fast port forwarding in Java

Java – Maven exec plug-in classnotfoundexception

Java – how does Lombok generate code to an existing class?

Do characters have intrinsic int values in Java?

Create a stand-alone Java websocket client endpoint?

Java – spring @ transactional annotation cannot use automatic wiring?

Java TCP Socket Sniffing

Java – simpledateformat cannot handle 12 months correctly

Java – jax-ws, authentication and authorization – how?

Where did ORM fail?

Java – import CSV data using Apache poi

Simulating duck typing in Java

Java – access request objects from custom JSP Tags

Separate logic and GUI in Java

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