Recent Posts
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Java – synchronization – reordering obstacles in two directions with the edegs Compiler?
I have a question about the JAVA memory model The following examples are given: action 1 action 2 synchronized(monitor…… -
Java – set the default heap size in windows
See the English answer > how to increase Java heap memory permanently? three Solution Java_ Opts is set to a system…… -
Java – Jax WS changes the content type to content type because the server is super sensitive
I have to connect to a poorly executed server that can only understand content type (capital-t), not content type How …… -
Java – missing soapaction header when using CXF
I have a WSDL file from an external WS and I am connecting to it I'm trying to use CXF (with Jax - WS) But I got error…… -
Update existing Excel files in Java Apache poi
I'm trying to write a java program that runs every day (using the task scheduler) and attaches a column to the Excel s…… -
Date to UTC format Java
I have such a string 2013-10-22t01:37:56 I need to change this string to UTC date format, such as mm / DD / yyyy KK: m…… -
Exception in thread “main” Java Lang. outofmemoryerror: GC overhead limit exceeded in GWT application
I am developing applications using GWT and gae When I try to rebuild it or create an artifact, I get a lot of errors a…… -
Java – how to implement XMPP to send push notifications
I want to use XMPP so that my app will send updates to Android phones (1.5 and later) I'd like to use XMPP to send pus…… -
Open layers and events in multiple layers (openlayer. Layer. Vector)
Another day working with openlayers and another problem That is, for different types of things (cars, history and regi…… -
Java – vertical header file in JTable?
Is there a way to rotate the JTable column header 90 degrees? Solution View Darryl's vertical table header cell render…… -
Java – displays a histogram of image data
Sometimes I need to display the representation of image data in the form of a histogram I am particularly interested i…… -
Is there any way to modify the value of the “private static final” field in Java?
I know it's usually stupid, but don't shoot me before reading this question I promise I have a good reason to do this:…… -
Deserialization of embedded Java objects
I have to deserialize the following JSON to use the Jackson library to enter the client class { "code":"C001","city…… -
Asynchronous task pattern in Java
As I moved from c# to Java, I needed to implement a set of asynchronous tasks I have a good understanding of Java thre…… -
Deserialization – for Java util. Gson deserializer for date
Does anyone have a deserializer job? Do I get the full JSON expression in the method "deserialize" instead of the elem…… -
Deserialization of embedded Java objects
I have to deserialize the following JSON to use the Jackson library to enter the client class { "code":"C001","city…… -
Java – Google Guice: provider with parameters
I have a constructor that depends on classes a and B I define it as follows: @Inject TestClass(A a,B b) Is there any w…… -
Multithreading – golang blocking and non blocking
I'm a little confused about how to handle non - blocking io Will go use to block IO when reading a file from a file or…… -
Design patterns in Android
Generally speaking, there are eight common design patterns: singleton, factory, observer, agent, command, adapter, syn…… -
Android develops imitation scanning to realize the photo function in the shooting frame
It is modeled on the current scanning form, surrounded by translucent shielding, and then fully transparent in the mid…… -
Classic method for exiting multiple activities in Android
1. Use the list collection method Save the activity instance with a list and kill it one by one Add similar code in on…… -
Write led-ndk program for Android driver
1. First write Linux kernel module led 2. Header files need to be generated. Generating header files requires an appli…… -
Singleton mode of Android design mode series
Singleton mode is the simplest of the 23 design modes of GOF. Compared with other modes, this mode is relatively indep…… -
Android message mechanism and memory leak of handler
Handler Every beginner of Android development can't get around the "barrier" of handler. Why is it a barrier? First, t…… -
Android realizes audio bar graph effect (imitation audio animation without monitoring audio input)
Audio bar graph The following figure shows the audio bar chart this time: Because it's just @ r_ 419_ 1356 @ usage, we…… -
Detailed explanation of Android volley picture loading function
Gituhb project I have uploaded the Chinese annotation project of Volley source code to GitHub. Welcome to fork and sta…… -
Comprehensive summary of Android intent usage and example code
1. Call the dialer 2. Send SMS or MMS 3. Open web page through browser 4. Send email 5. Display map and route planning…… -
Android onnewintent() trigger mechanism and precautions
1、 Onnewintent () Override the following methods in intentactivity: oncreate OnStart onrestart onresume onpause onsto…… -
Causes and solutions of black or white screen when Android App starts
1. Cause In fact, it is normal to display a black or white screen, because the window background has been displayed be…… -
Android realizes Gaussian Blur effect and is compatible with lower versions
1、 Effect demonstration Gaussian Blur effect is used in the project. I have consulted some materials. Considering the…… -
On demand loading view for Android layout performance optimization
Sometimes applications have complex layouts that are rarely used. Reloading them when needed can reduce memory consump…… -
Difference between Android ImageView SRC and background
When using glide before, I was confused by the image settings of ImageView (a very low-level problem, which is a commo……