Spring4 Init And Destory Life Cycle Methods Project

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This is MainProgram.java file having the source code to execute business logic.

package com.cv.spring.scope; import org.apache.log4j.Logger; import org.springframework.context.support.ClassPathXmlApplicationContext; /**  * @author Chandra Vardhan  */ public class MainProgram {   private final static Logger LOGGER = Logger.getLogger(MainProgram.class);      public static void main(String[] args) {     ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(         "beans.xml");     Student student = (Student) context         .getBean("student");     LOGGER.info("=========================================================");          student.setMessage("I'm object Student");     LOGGER.info(student.getMessage());          LOGGER.info("=========================================================");       context.close();   } }

This is Student.java file having the source code to execute business logic.

package com.cv.spring.scope; import org.apache.log4j.Logger; import org.springframework.beans.factory.DisposableBean; import org.springframework.beans.factory.InitializingBean; /**  * @author Chandra Vardhan  */ public class Student implements InitializingBean, DisposableBean {   private final static Logger LOGGER = Logger.getLogger(Student.class);   private String message;   public String getMessage() {     return message;   }   public void setMessage(String message) {     this.message = message;   }   @Override   public void destroy() {     LOGGER.info("IN Student.destroy() method !!!");     LOGGER.info("Bean will destroy now.");   }   @Override   public void afterPropertiesSet() throws Exception {     LOGGER.info("IN Student.afterPropertiesSet() method !!!");         LOGGER.info("Bean is going to initialize.");   } }

This is pom.xml file having the entries of dependency jars and information to build the application .

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">.0" encoding="UTF-8"?> <modelVersion>4.0.0</modelVersion> <groupId>com.cv.spring.scope</groupId> <name>Spring4InitAndDestoryLifeCycleMethods</name> <packaging>jar</packaging> <version>1.0</version> <properties> <java-version>1.8</java-version> <log4j-version>1.2.16</log4j-version> <org.springframework-version>4.2.0.RELEASE</org.springframework-version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> </dependencies> <build> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </pluginManagement> </build> <artifactId>Spring4InitAndDestoryLifeCycleMethods</artifactId> </project>

This is beans.xml file having the spring configuration properties.

<beans:beans xmlns="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <beans:bean id="student" class="com.cv.spring.scope.Student" /> </beans:beans>

This is log4j.properties file having the entries for logging the information into the console/file.

#By default enabling Console appender # Root logger option log4j.rootLogger=INFO, stdout # Redirect log messages to console log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%-5p [%c]:%L -->> %m%n # Redirect log messages to a log file #log4j.appender.file=org.apache.log4j.RollingFileAppender #log4j.appender.file.File=C:\servlet-application.log #log4j.appender.file.MaxFileSize=5MB #log4j.appender.file.MaxBackupIndex=10 #log4j.appender.file.layout=org.apache.log4j.PatternLayout #log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n