In all my previous posts under java logging, I have configured logger and handler programmatically. We can externalize those configurations to properties file also. The advantage of this approach is that we can change configurations at any time without recompiling java class. In this post I will show with example how to do that. Let’s…… Continue reading Externalizing the logger and handler configuration to properties file
Tag: Java
Setting Log Levels for Logger and Handler
In this post under Java Logging, I will explain with example how to set log levels for Logger and Handler implementations. Please not the log level of Logger and Handler should be same otherwise some messages will not be logged by the handler. We set the log levels by calling “setLevel” method available on Logger…… Continue reading Setting Log Levels for Logger and Handler
BiConsumer’s andThen Example
In this post under Java, we will explain with an example the andThen method under BiConsumer functional interface. BiConsumer’s andThen method is used to chain one BiConsumer interface implementation with one or more BiConsumer interface implementations. Lets consider an example. I have a list of TCS employees with the class structure as shown below TCSEmployee…… Continue reading BiConsumer’s andThen Example
BiFunction’s andThen Example
In this post under Java, we will explain with an example the andThen method under BiFunction functional interface. BiFunction’s andThen method is used to chain a BiFunction interface implementation with one or more Function interface implementations. Lets consider an example. I have a list of employess with their salary and percent of bonus to apply…… Continue reading BiFunction’s andThen Example
BiConsumer Example
In this post, I will show how to use BiConsumer functional interface with an example. BiConsumer functional interface is similar to Consumer functional interface. It takes an input, processes it and doesn’t return anything. The difference lies in the number of inputs taken by the BiConsumer functional interface. Consumer functional interface takes one input whereas…… Continue reading BiConsumer Example
Private Interface Methods
From Java 9 onwards, we can declare private methods in interface. In this post I will show with an example of how to do it. Private methods in interface are useful if you have logic shared by more than one default interface methods. We can put the shared logic in the private method. Below is…… Continue reading Private Interface Methods
BiFunction Example
In this post, I will show how to use BiFunction functional interface with an example. BiFunction functional interface is similar to Function functional interface. It takes an input and produces an output. The difference lies in the number of inputs taken by the BiFunction functional interface. Function functional interface takes one input and produced one…… Continue reading BiFunction Example
DigestInputStream Class Example
In this post under Java –> Security, I will explain with example the use of DigestInputStream class. When any stream class under java.io package is used, the data flows from source to destination in a stream. DigestInputStream class can be used to calculate a Message Digest when data is being read from a source using…… Continue reading DigestInputStream Class Example
DigestOutputStream Class Example
In this post under Java –> Security, I will explain with example the use of DigestOutputStream class. When any stream class under java.io package is used, the data flows from source to destination in a stream. DigestOutputStream class can be used to calculate a Message Digest when data is being written to the destination using…… Continue reading DigestOutputStream Class Example
Custom Error Handling when parsing xml through SAX api
In this post under JAXP, I will explain how to add custom error handler when parsing xml document through SAX api. To provie a custom error handler, we need to implement the interface org.xml.sax.ErrorHandler as shown below package sax; import org.xml.sax.ErrorHandler; import org.xml.sax.SAXException; import org.xml.sax.SAXParseException; public class CustomErrorHandler implements ErrorHandler { @Override public void error(SAXParseException…… Continue reading Custom Error Handling when parsing xml through SAX api
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