Recent Posts
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Getting started with Android (XXII) parsing JSON
Original link: http://www.orlion.ga/687/ There are many ways to parse JSON, mainly including officially provided jsono…… -
Getting started with Android (XI) SQLite curd
Original link: http://www.orlion.ga/594/ 1、 Add data The getreadabledatabase () or getwritabledatabase () methods of …… -
Android Introduction (8) broadcast
Original link: http://www.orlion.ga/572/ 1、 Broadcasting mechanism Each application in Android can register the broad…… -
Getting started with Android (13) content provider
Original link: http://www.orlion.ga/612/ Content provider is mainly used to realize the function of data sharing betwe…… -
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This is an article from Alibaba’s internal technology forum
This is an article from Alibaba's internal technology forum. The original text has been unanimously praised by Alibaba…… -
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A large number of GCs in the company’s online virtual machines have led to a surge in STW and CPU — a process of cocooning and positioning
background There is a Tomcat service on the company's online, in which about 8 microservices are merged and deployed. …… -
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Java class set framework
The objects in the collection are not sorted in a specific way, and there are no duplicate objects Operation results -
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DDMS files not found: xxx\hprof-conv.exe
The following error occurred: terms of settlement: Copy hprof-conv.exe in Android SDK \ Tools Directory to sandroid SD…… -
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Java access rights
public Classes in the same package or in different packages can be accessed freely private Can only be used in this cl…… -
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Do not rely too much on the expired monitoring of redis!!
Redis expired monitoring scenario In business, there is a need to wait for a certain time to execute a certain behavio…… -
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How to quickly create millions of test data
scene During SQL optimization or query performance test, we need a lot of data test to simulate. At this time, a probl…… -
Java transformation
Including upward transformation and downward transformation Upward transformation @ h_ 301_ 6@ -
Summary of problems in upgrading JDK from old version to 1.8
Jdk8 upgrade FAQ JDK environment settings in IntelliJ Settings Click File > Settings > java compiler Select 1.8 …… -
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Subclass instantiation super
Super calls the parent class construction, which must be written in the first line Call other constructs of the parent…… -
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Java class set framework map
Each element in the map contains a key object and a value object. Keys cannot be repeated and values can be repeated O…… -
Java package
Prevent class name duplication Package name naming rules The full name of a class "Package name" + ". +" Class name Co……