Java
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How to implement API / SPI pattern in Java?
I am creating a framework that exposes APIs for developers to use: public interface MyAPI { public void doSomeStuf…… -
Java – which return type is used in the spring MVC of the @ requestmapping method?
I know that in spring, I can return the @ requestmapping method of MVC in @ controller >String > model > mode…… -
Java string permutation and combination search
I am writing an Android word application My code includes a method that can find all combinations of strings and subst…… -
Java – correctly handle long data in Hibernate
I received a problem that the data is too large in hibernate That's- Whether it is possible to automatically truncate …… -
Java – findviewbyid() returns that the symbol cannot be found, but is the ID defined in the layout?
I'm learning some Android application development myself. I'm focusing on a video tutorial on how to create a simple t…… -
Java – how do I clear strings?
In the program I am writing, the text field must display some text at some time output.setText( outputString ); output…… -
Java – whether custom objects are passed by value or by reference in fragments and activities
Hello, Java and Android experts I have a problem. I have a room_ Class of structure, which implements serializable Thi…… -
Java – best used: action vs actionlistener?
Myself, I always use actionlistener as a swing event handler (such as button click), which is the most common listener…… -
Restful web development using Java EE 6 – what are the options?
I'm trying to find the best choice for developing restful web applications using Java EE 6 For example, I would like t…… -
How do I set up findbug for Java 8 projects with graduates?
I have a Java 8 project built using graduation 1.12, which is perfect Now I want to use findbugs because I use Java 8 …… -
Java – how does spring batch manage transactions (there may be multiple data sources)?
I want to provide some information about data flow in spring batch processing, but I can't find what I'm looking for o…… -
Spring. Use Java configuration to resolve circular dependencies without @ Autowired
I have circular dependency and Java configuration Although it is easy to solve it with XML configuration, I can't solv…… -
Java – use HashSet to upload and deliver intent in ArrayList?
Imagine that I need to create a collection of elements in which the order can or doesn't matter All I'm going to do is…… -
Java – hibernate spring MVC: object mapping configuration
Is there any way to define hibernate by scope instead of one by one cfg. Objects in XML? For example, in spring, you c…… -
Java – chaotic example of constructor overloading
The following program output is I am Parameterized Ctor a = 0 b = 0 public class ParameterizedCtor { private in…… -
Java – best used: action vs actionlistener?
Myself, I always use actionlistener as a swing event handler (such as button click), which is the most common listener…… -
How do you incorporate the main features of Java into your design?
You can actually skip this first part because it's confusing, but I'll keep it here because I want to know if others f…… -
Java – definition of class level annotation is the class loader always the parent of the class’s startup class loader?
The assumptions are as follows: @SomeAnnotation public interface Foo { } I want to know whether the definition class l…… -
Java – how to set each character to a different color / background color in jtextpane?
I have been looking for this period of time. So far, what I have been able to think of is how to create a style and ap…… -
Java, setting ID for JButton
Set the ID for JButton anyway. I'm used to Android I am looking for the following: newButton.setId(objectcounter); Sol…… -
Java – dependency injection is condition based
I'm using Google Guice for dependency injection Suppose I have the following points: public interface Payment { pu…… -
Java – how do I click on a hidden element in selenium webdriver?
I have a grid showing some records When I click on a record and check the element, it shows that it is hidden, but it …… -
How to read a file into a Java bitmap?
I know how to read bitmap files into a byte array So how to convert a byte array to a Java bitmap? Solution If you alr…… -
Use java to store user name / password on MAC
I am writing a small program (a twitter client) for Mac OS X in Java As part of its functionality, it needs a place to…… -
Java – how do I use the Internet time server to get time?
I want GMT [Greenwich mean time], and I don't want to rely on my system date and time Basically, I want to use a time …… -
In Java, how to efficiently optimize the descendants of streaming tree nodes?
Suppose we have a collection of objects identified by a unique string and a class tree that defines the hierarchy on t…… -
Java – use nested enumerations in gwt-rpc
I have an enumeration with nested enumerations (I want private), but when I do, GWT tells me that nested enumerations …… -
Write data from one java servlet to another
I'm trying to write a servlet that will post an XML file (an XML formatted string) to another servlet StringBuilder sb…… -
Abstract Java enumeration
I write a library that should rely on enumeration, but the actual Enumeration should be defined by the user of my libr…… -
Java – the executable jar ignores its own class path attribute
I use https://stackoverflow.com/a/5893391/14731 Adds an arbitrary entry to the class path attribute using the directiv…… -
Java – statelistdrawable to switch color filters
I want to create a custom button for tabhost I've been trying to use the same image resource (PNG), but the color filt…… -
Java statistics primitives, objects, methods, and heaps (memory management and best practices)
OK, so I've been developing Java for more than a year and I'm trying to understand the language and best practices So ……