Guide to use the Logging API framework in the Java class library

Guide to use the Logging API framework in the Java class library Introduction: Logging is one of the important components in software development, which is used to recording and tracking the log information generated when running.The Java class library provides multiple Logging API frameworks, allowing developers to easily record log records on applications.This article will introduce the guidelines for the use of the Logging API framework in the Java library. 1. The choice of logging API framework: There are several common logging API frameworks in the Java class library, including Java.util. Logging, Log4j and SLF4J.When selecting the Logging API framework, you can consider it according to the following factors: -Function requirements: Different Logging API frameworks provide different functions and characteristics, and you can choose the most suitable framework according to the requirements. -The performance requirements: Some Logging API frameworks may have a certain impact on the performance of the application. You can choose the most suitable framework according to the performance requirements. -D maintenance and support: Select the Logging API framework that is widely used and maintained and supported to ensure that the latest updates and restorations can be obtained in the future. 2. Java.util. Logging framework use: Java.util. Logging is a log framework that comes with the Java class library.The following is an example of the Java.util. Logging framework: First, you need to introduce java.util.logging package: import java.util.logging.*; Then, create a logger object: private static final Logger LOGGER = Logger.getLogger(YourClassName.class.getName()); Use the Logger object where you need to record the log: LOGGER.info("This is an informational log message."); LOGGER.warning("This is a warning log message."); You can set different logs through the Logger object: Logger.setLevel (level.info); // Set the log level of INFO 3. LOG4J framework use: LOG4J is a popular open source log framework.The following is an example of the use of the log4j framework: First, you need to introduce the LOG4J JAR package and configure the log4j.properties file. Create a logger object: import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; private static final Logger LOGGER = LogManager.getLogger(YourClassName.class); Use the Logger object where you need to record the log: LOGGER.info("This is an informational log message."); LOGGER.warn("This is a warning log message."); You can set different logs through the Logger object: Logger.setLevel (level.info); // Set the log level of INFO 4. The use of the SLF4J framework: SLF4J is a simple log facade frame, which can be integrated with different log implementations.The following is an example of the SLF4J framework: First, the specific implementation of SLF4J-API and SLF4J (such as LOG4J or LOGBACK) is introduced. Create a logger object: import org.slf4j.Logger; import org.slf4j.LoggerFactory; private static final Logger LOGGER = LoggerFactory.getLogger(YourClassName.class); Use the Logger object where you need to record the log: LOGGER.info("This is an informational log message."); LOGGER.warn("This is a warning log message."); You can set different logs through the Logger object: Logger.setLevel (level.info); // Set the log level of INFO in conclusion: This article introduces the basic usage of the use of the Logging API framework in the Java Library, including the basic usage of Java.util. Logging, Log4J and SLF4J.Select the appropriate logging API framework according to actual needs, and to record the log information of the management program according to the functions provided by the framework, which is very important for developing, debugging and maintaining applications.