Java
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JSP authentication method using servlet filter
This paper describes the method of JSP authentication using servlet filter. Share with you for your reference, as foll…… -
Java uses httpclient to call HTTPS interface
This paper introduces the method of calling HTTPS interface by Java using httpclient, which is shared with you as foll…… -
Implementation and principle analysis of message push based on IOS
1、 Message push principle: Before implementing message push, several concepts related to push are mentioned, as shown…… -
Java random number generation specific implementation code
This example shares the java random number generation code for your reference. The specific contents are as follows Th…… -
Java programming method example of TCP network communication
This paper describes the method of TCP network communication by Java programming. Share with you for your reference, a…… -
Java database connection_ JDBC ODBC bridge connection mode (detailed explanation)
JDBC ODBC bridge connection mode operation database Su (course) Steps: 1. Configure data sources Search management too…… -
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Method of uploading and downloading files through FTP server in Java
For applications that use files to exchange data, using FTP server is a good solution. For the detailed setup and conf…… -
On whether to create parent class object in Java inheritance
one It is true to call the parent class constructor, but the parent class object is not created at all. It is just to …… -
Java – use guava cache without load function
My java application has a cache. I want to replace the current cache implementation with guava cache Unfortunately, my…… -
Java – espresso click menu item
I have a menu in the actionbar I created: @Override public boolean onCreateOptionsMenu(Menu menu) { menu.add(Menu…… -
Java – how to perfectly simulate keyevents?
How do you build your own keyevent object when the end user types something, which perfectly (or very closely) matches…… -
Java – does the order in the declaration of multidimensional arrays affect the memory used?
How many bytes do you want to allocate for a and B? import android.graphics.Bitmap; Bitmap[][][] a = new Bitmap[1000]…… -
Java method for saving the current state of the program
Can I save the current state of the Java program and reload it? The plan is rather complicated I just need to be able …… -
MVC Java config – handlerinterceptor does not exclude paths
I have an MVC Java configuration, but handlerinterceptor does not exclude some modes On the line marked XXX, if 1) I a…… -
Collection – give me a multifunctional practical use case
I want to know some actual use cases (it would be better if they had no association / binding with any programming lan…… -
Java – how to use CMU Sphinx 4 for voice and text of English voxforge model
I tried to find out how to use sphinx4 or pocketphinx with the English voxforge model, but I couldn't make it work I'v…… -
Java – streaming or custom jars in Hadoop
I run streaming media jobs on Hadoop (Amazon's EMR) and use mapper and reducer written in Python I want to know if I i…… -
Java – Hadoop – mapper constructor args
Is there any way to provide mapper constructor args in Hadoop? Libraries that may create jobs through some packaging? …… -
Optimize memory usage of string collections in Java
I have a large number of name value pairs (about 100k), and I need to store them in some kind of cache (such as hash m…… -
What is the method size of Java – JIT automatic inlining?
I've heard about JIT auto inlining small methods, such as getters (they have about 5 bytes) What is the boundary? Is t…… -
Java – is there any way to create a shortcut in eclipse and move the cursor to column n of the current row?
I have to follow some strict indentation rules for Java code In many cases, I have to jump to column 26 or 28 of the c…… -
What does this use of Java generics mean?
I want to know that the first < T > represents the following java code line I've read several tutorials on gener…… -
Data annotations – customize data annotations using RIA services
If you use riaservices with custom validatorattributes, this is one or more warning words This is senario. I am creati…… -
Java – scroll to the top of the page in a GWT application
I have a GWT application and I want to use this method to scroll to the top of the page: public static native void scr…… -
Java – place the component on the glass pane
I have a subclass of jlabel that forms a component of my GUI I have implemented the ability to drag and drop component…… -
Java – using static init blocks
I know how static init blocks work Solution When you want to initialize one or more static variables in one place It i…… -
Java. NiO channel and TLS
How to protect Java socketchannel, serversocketchannel or even datagram channel using TLS? I know there are some frame…… -
Java / JPA | query using the specified inheritance type
I am building a query on a generic table "sample", and I have several types inherited from this table "sampleone", "sa…… -
Java – JPA: extending persistence context and separating entities
There seem to be two modes to implement business transactions across multiple HTTP requests and jpas: >Entity manag…… -
Java – populate the HashMap with entries in the properties file
I want to use the properties class to populate the HashMap I want to load The entries in the propeties file, and then …… -
Java – NoClassDefFoundError does not have any class name
I tried to run Java tasks from ants I'm trying to run the "org. Apache. Tools. Ant. Launch. Launcher" class I keep get……