LxLxBlog

Java – Jersey serialization / deserialization problem: abstract types can only be instantiated with other type information

I'm serializing and deserializing my jersey I used Jersey to create a rest channel on Weblogic I have result objects t……

Java

2020-02-20

Is the swing repeat() method other than EDT in Java 7 still safe to use?

I know that even using swing's threading model, it was once considered safe to call repaint () and other methods from ……

Java

2020-02-20

Java – description of this lambda expression

I'm creating a word comparison class that also counts the number of occurrences of words (this is Java) This is my ori……

Java

2020-02-20

Java – parsing arrays with multiple types using gson

I want to use gson to parse the following JSON: [ [ "hello",1,[2] ],[ "world",3,[2] ] ] So……

Java

2020-02-20

Java EE – startup bean not called

I created a Java Web application project in NetBeans and created a startup bean in it: package malibu.util; import ja……

Java

2020-02-20

How to hide the internal structure of the Java API to the rest of the world

I'm developing a Java API to do things (secret, uh, them) Is there any way to hide classes and the internal structure ……

Java

2020-02-20

Java – how do i disable code splitting in GWT?

We have a very large GWT project, resulting in a 2 Mb monolithic application The obvious way to break it is to use spl……

Java

2020-02-20

Can we call “case” in another case in the same switch statement of Java?

My intention is to call two case in another case in the same switch statement. switch (orderType) { case 1: ……

Java

2020-02-20

Recognizing images with the same content in Java

Some time ago, I spent some time looking for ways to determine whether the two images are the same to answer this ques……

Java

2020-02-20

Java – eclipse Juno – why is there no warning to use uncommented private fields?

In previous versions of eclipse, this worked correctly Error / warning I checked "unused private fields" – > warnin……

Java

2020-02-20

How to use CSS in JavaFX to animate?

I want to change the style of the node by changing its style class Button button = new Button(); button.getStyleClass(……

Java

2020-02-20

Java synchronization method with expensive parameters

I have a synchronization method that seems to "use" synchronization significantly longer than it should be It looks li……

Java

2020-02-20

Java – use annotations for tracking

I've been using a company code base with a strategy to write a large number of tracking records Therefore, each method……

Java

2020-02-19

The java compiler does not give all errors at once

System.out.println("First eror :: without semicolon ") // first Error System.out.println("First eror :: without semi……

Java

2020-02-19

Java – incorrect MySQL date value: null

I'm trying to update a table from a Java application where a column may be null I tried several different methods, but……

Java

2020-02-19

Java: get the class of the inherited class from the static method

I have the following problems in Java: class Base { static void foo() { // I want to get Derived class……

Java

2020-02-19

Recursively search directories in Java

What is the best way to find a directory with a specific name in Java? The directory I am looking for can be located i……

Java

2020-02-19

Java – why do you sometimes print system. Java first Err statement?

In Java, I noticed that sometimes, system The err statement starts with the system Print before the out statement, alt……

Java

2020-02-19

Java – scenario of extending thread class and implementing runnable interface

I am a novice in java thread programming, so it is a basic problem (I checked, but I haven't found this problem before……

Java

2020-02-19

Java – Jackson polymorphism: how to map multiple subtypes to the same class

I'm using Jackson 1.9 x. Suppose I have an animal class: public class Animal { private String type; // accesso……

Java

2020-02-19

Implementing type erasure of ArrayList in Java

I read this article on Java generics and mentioned that the constructor of ArrayList looks a bit like this: class Arra……

Java

2020-02-19

Retrieving array values from mongodb using java

I have the following code: DBCollection collsc = db.getCollection("StudentCourses") ; BasicDBObject querysc = new Basi……

Java

2020-02-19

Java – unit testing: assertions don’t work?

I've been applying for unit test for some time. Today I met some very strange things Consider the following codes: Tes……

Java

2020-02-19

java. Lang. IllegalStateException: neither bindingresult nor the common target object of bean name ‘category’ can be used as the request property

I checked almost all the answers related to this question on the Internet, but I couldn't find the problem in my code ……

Java

2020-02-19

Java – use opencsv to write CSV to string without creating actual or temporary files

I'm trying to write CSV files using the opencsv library The limitation is that I don't want to create files or even te……

Java

2020-02-19

Java – Best ant tutorial / QuickStart?

Avoid learning ants for too long (IDE and copy and paste make simple tasks easier) I now see myself forced to take sha……

Java

2020-02-19

Java – why does ThreadPoolExecutor have BlockingQueue as a parameter?

I have tried to create and execute ThreadPoolExecutor int poolSize = 2; int maxPoolSize = 3; ArrayBlockingQueue<Run……

Java

2020-02-19

java – Hibernate Validator. How do I use @ valid annotation?

What is the purpose of placing the @ valid annotation at the method parameter level? public void (@Valid Person p) { .……

Java

2020-02-19

Automatically increase the build number in the Java project

I am using a version system represented by abbuild, where a is the overall Version (the prototype is alpha, the beta v……

Java

2020-02-19

Java – spring JPA MVC – error creating bean

I developed a spring JPA project in eclipse to access the data stored in the MySQL server Now I need to import this pr……

Java

2020-02-19

Unable to parse Java Lang.Object type – eclipse buildpath does not work properly

I encountered an eclipse problem on Mac OSX mountain lion I recently installed the Android SDK. In my java project, I ……

Java

2020-02-19

Java – improve protocol buffer performance

I'm writing an application that needs to quickly deserialize millions of messages from a single file The main function……

Java

2020-02-19

搜索内容

Java – Jersey serialization / deserialization problem: abstract types can only be instantiated with other type information

Is the swing repeat() method other than EDT in Java 7 still safe to use?

Java – description of this lambda expression

Java – parsing arrays with multiple types using gson

Java EE – startup bean not called

How to hide the internal structure of the Java API to the rest of the world

Java – how do i disable code splitting in GWT?

Can we call “case” in another case in the same switch statement of Java?

Recognizing images with the same content in Java

Java – eclipse Juno – why is there no warning to use uncommented private fields?

How to use CSS in JavaFX to animate?

Java synchronization method with expensive parameters

Java – use annotations for tracking

The java compiler does not give all errors at once

Java – incorrect MySQL date value: null

Java: get the class of the inherited class from the static method

Recursively search directories in Java

Java – why do you sometimes print system. Java first Err statement?

Java – scenario of extending thread class and implementing runnable interface

Java – Jackson polymorphism: how to map multiple subtypes to the same class

Implementing type erasure of ArrayList in Java

Retrieving array values from mongodb using java

Java – unit testing: assertions don’t work?

java. Lang. IllegalStateException: neither bindingresult nor the common target object of bean name ‘category’ can be used as the request property

Java – use opencsv to write CSV to string without creating actual or temporary files

Java – Best ant tutorial / QuickStart?

Java – why does ThreadPoolExecutor have BlockingQueue as a parameter?

java – Hibernate Validator. How do I use @ valid annotation?

Automatically increase the build number in the Java project

Java – spring JPA MVC – error creating bean

Unable to parse Java Lang.Object type – eclipse buildpath does not work properly

Java – improve protocol buffer performance

Categories

Recent Posts

Tags