How to use the retrospective version of the JSR 166 framework in the Java Library
How to use the retrospective version of the JSR 166 framework in the Java Library
introduction:
The JSR 166 is a group of concurrent tools provided in the Java class library, which aims to simplify the complexity of concurrent programming.In order to solve the common problems in multi -threaded programming, the JSR 166 framework introduced some important complication and data structure.However, in some cases, we may need to use the retrospective version of the JSR 166 framework to use these concurrent tools in the old version of the Java application.This article will introduce in detail how to use the retrospective of the JSR 166 framework and provide some Java code examples.
Step 1: Download the retrospective version of the JSR 166 framework
First, we need to download the retrospective version of the JSR 166 framework.You can find JAR files from the retrospective version from the Java ConcurrenCy Downloads website (https://gee.osWego.edu/dl/concurrency-nterest/).Select the retrospective version of your Java version and download it.
Step 2: Import the JSR 166 framework of retrospective version
Once you download the JAR file of the JSR 166 framework, you can import it into your Java project.In most IDE (integrated development environment), you can import the jar file through the following steps:
-Colon a folder called "lib" (or similar) in the project.
-Put the JAR file of the JSR 166 framework back to the folder.
-Cose your project in the ID and right -click.
-This to build path and select the "Configure Build Path" option.
-Cap on the "Libraries" tab, click the "Add Jars" button under "ClassPath".
-Review and select the JSR 166 framework in the "LIB" folder.
-Click "Apply" or "OK" (OK) button to complete the import.
Step 3: Use the JSR 166 framework with the retrospective version
Once you successfully import the JSR 166 framework, you can start using the concurrent tools.Here are examples of common concurrent tools for JSR 166 frameworks that use the retrospective version:
Example 1: Use the Lock interface of the retrospective version
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class LockExample {
private static Lock lock = new ReentrantLock();
public static void main(String[] args) {
// Get the lock
lock.lock();
try {
// Execute the code that needs to be synchronized
System.out.println("Locked section");
} finally {
// Release the lock
lock.unlock();
}
}
}
Example 2: Use the Condition interface of the retrospective version
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class ConditionExample {
private static Lock lock = new ReentrantLock();
private static Condition condition = lock.newCondition();
public static void main(String[] args) {
// Get the lock
lock.lock();
try {
// Execute the code of waiting conditions
System.out.println("Before await");
condition.await();
System.out.println("After await");
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
// Release the lock
lock.unlock();
}
}
}
in conclusion:
In this article, we have learned how to use the retrospective of the JSR 166 framework in the Java class library.We downloaded and introduced the JSR 166 framework of the retrospective version, and provided some basic complicated tools for example code, including Lock and Condition interfaces.By understanding and using the JSR 166 framework, we can better process the complexity of concurrent programming in the old version of the Java application.I hope this article will be helpful to your learning concurrent programming!
