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Log4j Enable/Disable Logging Example

Let’s say developers want to disable or enable the Log4j framework by simply clicking some checkboxes. The advantage of this is that when developers use the Log4j framework in the production environment and want to enable logging at any time, they just don’t need to change the XML or the properties file from the local machine and then upload it. ...

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Log4j Email Configuration Example

It is always better to get notified about any major exceptions that occur in an application instead of manually going through huge logs to find the probable exception messages. In this tutorial, I will show you how to implement an out of box Log4j appender (called as SMTPAppender) to send email alerts. 1. Introduction Printing messages to the console is ...

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Log4j Rolling Daily File Example

Logging is a critical feature of any application. In this tutorial, I will show you how to implement some useful Log4j RollingFileAppender Patterns for writing the logging mechanism in Java development. 1. Introduction Printing messages to the console is an integral part of the development testing and the debugging of a Java program. If developers are working on a Server ...

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Log4j Conversion Pattern Example

Logging is a critical feature of any application. In this tutorial, I will show you how to implement some useful Log4j Conversion Patterns for writing the logging mechanism in Java development. 1. Introduction Printing messages to the console is an integral part of the development testing and the debugging of a Java program. If developers are working on a Server ...

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Log4j 2 Best Practices Example

Logging is a critical feature of any application. In this tutorial, we will cover some Log4j2 best practices that can help developers get started and improve the logging with Log4j2. 1. Introduction Printing messages to the console is an integral part of the development testing and the debugging of a Java program. If developers are working on a Server side ...

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Log4j 2 Getting Started Example

In this tutorial, we will show you how to configure the Log4j2 with log4j2.xml file and print the logging to the console and a file. 1. Introduction Printing messages to the console is an integral part of the development testing and the debugging of a Java program. If developers are working on a Server side application, where they cannot see ...

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JAX-RS Web Service Example

Hello readers. In this tutorial, we will show how to use the JAX-RS (RESTful) jar files to implement a simple Hello World Web Service in Java. 1. Introduction JAX-RS stands for RESTful Web Services. JAX-RS is a set of APIs to develop the REST services. It is part of the Java EE6 and makes developers to develop the REST web ...

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Java Servlet RequestDispatcher Tutorial

Communication between the Servlets is an important task to the programmer. Request Dispatcher is an interface whose implementation defines an object which can dispatch the request to any resources on the server. In this tutorial, we will see how the javax.servlet.RequestDispatcher interface is used to forward or include the response of a resource in a Servlet.         ...

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Java Servlet Application for Login Page

Servlets are modules of the Java code that run in a server application to answer the client requests. They are not tied to a specific client-server protocol but are most commonly used with HTTP. The word “Servlet” is often used in the meaning of “HTTP Servlet“. In this tutorial, we will explain how to handle the Servlet HTTP POST Request ...

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JPA persistence.xml Example

Hello readers! In this tutorial we will show how to implement the Java Persistence API and define the JPA Persistence Units with EclipseLink and MySQL in Java. 1. Introduction Java Persistence API (JPA), is a standard interface which wraps the different Object Relational Mapping (ORM) tools such as Hibernate, EclipseLink, OpenJPA etc. JPA provides a javax.persistence.EntityManager interface which is used ...

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