Additional Java SE Packages

1. Create Parent and Child Loggers This program demonstrates hierarchical logging by creating a parent logger and a child logger. The child logger inherits the logging behavior of the parent logger. 2. Set Logging Level for Parent Logger This program demonstrates that a child logger inherits the logging level of its parent logger. Only log […]

Hierarchical Logging in Java refers to the parent-child relationship among loggers based on their names. This structure allows you to configure logging behavior at higher levels (e.g., a package or module) and automatically apply or override it in child loggers. Loggers in java.util.logging are organized in a tree hierarchy, with the dot (.) separator defining

1. Create and Use a Custom Logger This program demonstrates how to create a custom logger using the Logger class. The custom logger records information, warning, and error messages. 2. Custom Logger with ConsoleHandler This program creates a custom logger and attaches a ConsoleHandler. The handler displays formatted log messages on the console. 3. Custom

Custom loggers allow you to define named loggers tailored to specific application modules, services, or classes. This modular approach helps in maintaining granular control over logging configuration, enabling separate log levels, handlers, and formatters for different components. Simple Program This shows how a custom-named logger (MyCustomLogger) is configured independently of the root logger. Problem Statement

Java allows logging configuration directly in code. This gives developers full control over loggers, handlers, formatters, and levels at runtime, useful for dynamically adjusting logs or when file-based config isn’t practical. Simple Program Problem Statement LotusJavaPrince wants to build a logger that logs all suspicious activity to a file for compliance purposes. Mahesh, the security

Java provides the ability to configure the logging behavior externally through .properties files, removing the need to hardcode logger behavior into the Java source code. This enables dynamic control over: Logger levels Handler types and destinations Formatter styles Output files, consoles, or network sockets Format of Logging Properties File Java logging reads configuration from a

The Level class in the java.util.logging package defines a set of standard logging levels that indicate the severity of log messages. Loggers and handlers use these levels to decide what messages to log or ignore. Commonly Used Methods Standard Logging Levels Simple Program Using Levels Problem Statement: LotusJavaPrince has built a Banking Alert System. Mahesh,

The Filter interface is part of the java.util.logging package and is used to control whether a particular LogRecord should be logged or discarded. Filters can be applied to Logger or Handler objects to fine-tune the logging output. Commonly Used Methods Simple Program  This program logs only messages with level WARNING or above. Problem Statement LotusJavaPrince

1. Logging Using ConsoleHandler This program demonstrates the use of ConsoleHandler to display log messages on the console. The handler is attached to a logger and configured to display all log levels. 2. Logging Messages to a File Using FileHandler This program demonstrates the use of FileHandler to store log messages in a file. The

XMLFormatter is a class (commonly from java.util.logging) used to format logging records into XML format. It transforms log entries into a structured XML string. It can also refer to a custom utility class to format any raw XML string into a human-readable, pretty-printed XML format with indentation. Commonly Used Methods Simple Program Problem Statement: LotusJavaPrince