Spring AOP AspectJ @After Annotation Example | Spring Tutorial

Click here to watch on Youtube:
https://www.youtube.com/watch?v=qVDkf0KF19I&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

Spring AOP AspectJ @After Annotation Example | Spring Tutorial

Spring AOP AspectJ @After Annotation Example | Spring Tutorial

Spring AOP AspectJ @After Annotation Example | Spring Tutorial

pom.xml

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ram.core</groupId>
    <artifactId>SpringDemo</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>SpringDemo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring.version>5.0.5.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- Spring 5 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- Spring AOP + AspectJ -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
       
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.9.1</version>
        </dependency>
       
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.1</version>
        </dependency>

    </dependencies>

</project>

EmployeeService.java

package com.ram.service;

public class EmployeeService
{
    public void addEmployee()
    {
        System.out.println("Add Employee ");
    }
   
    public void modifyEmployee()
    {
        System.out.println("Modify Employee");
    }
   
    public void deleteEmployee()
    {
        System.out.println("Delete Employee");
    }

}

LoggingAspect.java

package com.ram.Aspect;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;

@Aspect
public class LoggingAspect
{

    @After("execution(* com.ram.service.EmployeeService.addEmployee())")
    public void logAfter(JoinPoint joinPoint)
    {

        System.out.print("logAfter() is running!");
        System.out.println(", after "
                + joinPoint.getSignature().getName() + " method");
        System.out.println("******");
    }

}

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">

    <aop:aspectj-autoproxy />

    <bean id="employeeService" class="com.ram.service.EmployeeService"></bean>
   
    <!-- Aspect -->
    <bean id="logAspect" class="com.ram.Aspect.LoggingAspect" />

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ram.service.EmployeeService;

public class App
{
    public static void main(String[] args)
    {
        ApplicationContext context = new ClassPathXmlApplicationContext(
                "applicationContext.xml");

        System.out.println("---------------------------------------");

        EmployeeService employeeService = context
                .getBean("employeeService", EmployeeService.class);

        employeeService.addEmployee();

        employeeService.modifyEmployee();

        employeeService.deleteEmployee();

    }

}

Output

Nov 07, 2018 10:10:23 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@32709393: startup date [Wed Nov 07 10:10:23 IST 2018]; root of context hierarchy
Nov 07, 2018 10:10:24 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
---------------------------------------
Add Employee
logAfter() is running!, after addEmployee method
******
Modify Employee
Delete Employee

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/SpringDemo_AspectJ_after.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/javaee/tree/master/Spring_2018/SpringDemo_AspectJ_after

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/a5cdfdc3da3c676ee6dec77cfdb6b5c635be29d3/Spring_2018/SpringDemo_AspectJ_after/?at=master

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial

Spring AOP AspectJ Before Advice example using XML configuration | Spring Tutorial

Click here to watch on Youtube:
https://www.youtube.com/watch?v=7jN64twSuxk&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

Spring AOP AspectJ Before Advice example using XML configuration | Spring Tutorial

Spring AOP AspectJ Before Advice example using XML configuration | Spring Tutorial

Spring AOP AspectJ Before Advice example using XML configuration | Spring Tutorial

pom.xml

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ram.core</groupId>
    <artifactId>SpringDemo</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>SpringDemo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring.version>5.0.5.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- Spring 5 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- Spring AOP + AspectJ -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
       
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.9.1</version>
        </dependency>
       
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.1</version>
        </dependency>

    </dependencies>

</project>

EmployeeService.java

package com.ram.service;

public class EmployeeService
{
    public void addEmployee()
    {
        System.out.println("addEmployee() is called");
    }
   
    public void modifyEmployee()
    {
        System.out.println("modifyEmployee() is called");
    }
   
    public void deleteEmployee()
    {
        System.out.println("deleteEmployee() is called");
    }

}

LoggingAspect.java

package com.ram.Aspect;

import org.aspectj.lang.JoinPoint;

public class LoggingAspect
{
    public void logBefore(JoinPoint joinPoint)
    {

        System.out.print("logBefore() is running!");
        System.out.println(", before "
                + joinPoint.getSignature().getName() + " method");
        System.out.println("******");
    }

}

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">

    <bean id="employeeService" class="com.ram.service.EmployeeService"></bean>

    <!-- Aspect -->
    <bean id="logAspect" class="com.ram.Aspect.LoggingAspect" />

    <aop:config>

        <aop:aspect id="aspectLoggging" ref="logAspect">

            <!-- @Before -->
            <aop:pointcut id="pointCutBefore"
                expression="execution(* com.ram.service.EmployeeService.addEmployee()))" />

            <aop:before method="logBefore" pointcut-ref="pointCutBefore" />

        </aop:aspect>

    </aop:config>

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ram.service.EmployeeService;

public class App
{
    public static void main(String[] args)
    {
        ApplicationContext context = new ClassPathXmlApplicationContext(
                "applicationContext.xml");

        System.out.println("---------------------------------------");

        EmployeeService employeeService = context
                .getBean("employeeService", EmployeeService.class);

        employeeService.addEmployee();

        employeeService.modifyEmployee();

        employeeService.deleteEmployee();

    }

}

Output

Nov 07, 2018 9:14:40 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@32709393: startup date [Wed Nov 07 09:14:40 IST 2018]; root of context hierarchy
Nov 07, 2018 9:14:40 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
---------------------------------------
logBefore() is running!, before addEmployee method
******
addEmployee() is called
modifyEmployee() is called
deleteEmployee() is called

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/SpringDemo_aspectj_before_xml_config.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/javaee/tree/master/Spring_2018/SpringDemo_aspectj_before_xml_config

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/a5cdfdc3da3c676ee6dec77cfdb6b5c635be29d3/Spring_2018/SpringDemo_aspectj_before_xml_config/?at=master

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial

java.sql.Timestamp class | Java Date and Time - Playlist

Click here to watch on Youtube: 
https://www.youtube.com/watch?v=7w_r2ILMFuI&list=PLmCsXDGbJHdj5nAyhO55lOzSJiU3c7xXI

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial

java.sql.Timestamp class Introduction | Java Date and Time

Click here to watch on Youtube:
https://www.youtube.com/watch?v=7w_r2ILMFuI&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

java.sql.Timestamp class Introduction | Java Date and Time

TimestampDemo.java

import java.sql.Timestamp;

public class TimestampDemo
{
    public static void main(String[] args)
    {
        long millisecond = System.currentTimeMillis();

        /*
         * Constructs a Timestamp object using a milliseconds time
         * value. The integral seconds are stored in the underlying
         * date value; the fractional seconds are stored in the nanos
         * field of the Timestamp object.
         *
         * Parameters:
         *
         * time - milliseconds since January 1, 1970, 00:00:00 GMT. A
         * negative number is the number of milliseconds before
         * January 1, 1970, 00:00:00 GMT.
         */
        Timestamp timestamp = new Timestamp(millisecond);
        System.out.println(timestamp);
    }

}

Output

2018-11-03 11:04:10.96

Refer: 
https://docs.oracle.com/javase/8/docs/api/index.html?java/sql/Timestamp.html

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/TimestampDemo_Intro.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava_2018/TimestampDemo_Intro

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/4cfac93378c4f9d33f18bb5083115d18778294de/BasicJava_2018/TimestampDemo_Intro/?at=master

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial

How to use setTime(long time) method of java.sql.Time class | Java Date and Time

Click here to watch on Youtube: 
https://www.youtube.com/watch?v=CILW7YwJuPI&list=UUhwKlOVR041tngjerWxVccw

TimeDemo.java

import java.sql.Time;

public class TimeDemo
{

    public static void main(String[] args)
    {

        Time time = Time.valueOf("15:06:00");
        System.out.println("Before setTime = " + time);

        /*
         * Sets a Time object using a milliseconds time value.
         */
        time.setTime(System.currentTimeMillis());
        System.out.println("After setTime  = " + time);

    }

}

Output

Before setTime = 15:06:00
After setTime  = 09:51:09

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/TimeDemo_setTime.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava_2018/TimeDemo_setTime

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/4cfac93378c4f9d33f18bb5083115d18778294de/BasicJava_2018/TimeDemo_setTime/?at=master

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial

How to use toLocalTime() method of java.sql.Time class | Java Date and Time

Click here to watch on Youtube: 
https://www.youtube.com/watch?v=dROtKL0KKXw&list=UUhwKlOVR041tngjerWxVccw

TimeDemo.java

import java.sql.Time;
import java.time.LocalTime;

public class TimeDemo
{

    public static void main(String[] args)
    {

        Time time = Time.valueOf("15:06:20");
        System.out.println("time      = "+time);

        /*
         *
         * The conversion creates a LocalTime that represents the same
         * hour, minute, and second time value as this Time.
         *
         * Returns:
         *
         * a LocalTime object representing the same time value
         */
        LocalTime localTime = time.toLocalTime();
        System.out.println("localTime = "+localTime);

    }

}

Output

time      = 15:06:20
localTime = 15:06:20

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/TimeDemo_toLocalTime.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava_2018/TimeDemo_toLocalTime

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/4cfac93378c4f9d33f18bb5083115d18778294de/BasicJava_2018/TimeDemo_toLocalTime/?at=master

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial