Programmer Think

Dynamic agents are used in many low-level frameworks, such as struts, Spring and so on. Dynamic proxy is mainly used for method enhancement, so that you can enhance some methods without modifying the source code, and do whatever you want before and after method execution. Because in InvocationHandler's invoke Method, you can directly get the Me ...

Java provides four thread pools through Executors, namely: New CachedThreadPool creates a cacheable thread pool, which can flexibly reclaim idle threads if the length of the thread pool exceeds the processing requirements, and if not, create new threads. New Fixed ThreadPool creates a fixed-length thread pool that controls the maximum num ...

01 Thread Operation Sharing Data Security Issues * A: Thread Operation Sharing Data Security If there are multiple threads running at the same time, these threads may run the code at the same time. The result of each run of the program is the same as that of single thread, and the value of other variables is the same as expected, which is threa ...

We have written two sections of teacher-student examples in succession, which must be bored to death. For example, we play 100 times or don't know how to write real code. So, starting with this section, we're starting to move closer to the real code. The easiest example of an event to understand is the mouse event: we click on the mouse, the m ...

Java 9 is coming, so we have to sort out Java 8. Official documents: http://docs.oracle.com/javase/specs/jls/se8/html/index.html I. Default and static methods of interfaces The method body can also be written in the interface. The class that implements the interface no longer enforces the implementation of the method, but only needs to add defa ...

Bootstrap initialization process netty's client boot class is Bootstrap. Let's take a look at the initialization process of Bootstrap in the client part of spark's rpc. TransportClientFactory.createClient(InetSocketAddress address) Simply post out the Bootstrap initialization code // Client boot object Bootstrap bootstrap = new Bootstrap(); // ...

We can create a new project and then generate a new signature file.   Generally speaking, after these operations, we can package by clicking Build - > Generate Signed APK - > Next in the upper left corner, and then selecting the corresponding Build Type. That's too much trouble for some people. They have to input relevant informatio ...

1. Prototype of two interfaces In Java, Comparable and Comparator interfaces are used for comparison. So what's the difference between the two interfaces in actual use? Now let's analyze it with examples. Let's first look at the prototype of the two interfaces in JDK. package java.lang; import java.util.*; public interface Comparable< ...

Previously, I learned the proxy mode of Java, and I was deeply impressed by how wonderful this mode is!A simple tidy up for later viewing. Definition: Provides a proxy for other objects to control access to this object.(e.g. train ticket agent point) Classification: Remote AgentVirtual AgentProtection AgentSmart Reference Agent Smart Refere ...

1. Overview Program Operating System: CentOS6.5 64bit JDK Version: 7 2. Testing 2.1 Prepare test program The test program is simple, just like a class, a main function, the general flow: The interval for getting the zip file from the parameter is read first, then the zip file path is obtained from the parameter.Then get the full path ...