In this post of Spring Batch, I will explain how to add step level listeners. Spring Batch provides a facility to add listeners at step level. The listeners are executed before the step is started and after the step is finished. This post explains how to create step level listeners and integrate them with the…… Continue reading Adding Step Level Listeners using StepExecutionListener
Quartz JobDataMap Example Part 1
In this post of Quartz scheduler, I will explain what is JobDataMap and how to use it. JobDataMap is an implementation of java Map interface. In addition to the methods of Map interface additional methods are added for storing and retrieving primitive types. JobDataMap holds data as a key value pair. It is used to…… Continue reading Quartz JobDataMap Example Part 1
Selecting elements by their tag name
In this post of JQuery, I will explain how to select elements by their tag name. The syntax is as shown below $(‘tagName’) This will return one object or collection of more than one objects based on how many elements are there in the html matching the tagname. In the below example when the button…… Continue reading Selecting elements by their tag name
Parsing xml document using DOM api
In this post I will explain how to parse a xml document using DOM api. The DOM api can also be used to create xml documents in addition to reading. The DOM compliant parser loads the entire document in memory for reading it. Once the entire xml document is loaded in the memory, we can…… Continue reading Parsing xml document using DOM api
Selecting elements using Class selector
In this post of JQuery, I will show how to select elements using class selector. Class selector is used to retrieve elements whose class attribute’s value matches with the one specified in the selector. Class selector also selects elements whose class attribute’s value have multiple class name and one of them matches with the one…… Continue reading Selecting elements using Class selector
Reading from multiple files using MultiResourceItemReader
In this post of Spring Batch, I will explain how to read from multiple files. We take the help of org.springframework.batch.item.file.MultiResourceItemReader, it reads from multiple file. The MultiResourceItemReader takes two arguments1) list of resources or pattern followed by the multiple source files, from which the data has to be read2) Reference to reader bean which…… Continue reading Reading from multiple files using MultiResourceItemReader
UnMarshalling YAML file to Java Object
This post explains unmarshalling information stored in YAML format to java object . This can be achieved with the help of YAMLMapper provided by jackson package. To explain with an example we will use the below pojo objects Employee package package2; import java.math.BigDecimal; import java.util.List; public class Employee { private String id; private String name;…… Continue reading UnMarshalling YAML file to Java Object
Marshalling Java Object to YAML format
This post explains marshalling a java object to YAML format and storing it to a file. This can be achieved with the help of YAMLMapper provided by jackson package. To explain with an example we will use the below pojo objects. Employee package package2; import java.math.BigDecimal; import java.util.List; public class Employee { private String id;…… Continue reading Marshalling Java Object to YAML format
Creating a YAML file
The below post explains how to write YAML data to file using YAMLGenerator. YAMLGenerator writes the data to a file in streaming way, helping the developer using the api to avoid creating an object representation of the entire data. We can get an instance of YAMLGenerator with the help of an instance of YAMLFactory as…… Continue reading Creating a YAML file
Parsing a YAML file
In this post I will explain how to parse a YAML file using Jackson framework. We need the following jars in our classpath 1) jackson-dataformat-yaml-2.9.6.jar 2) snakeyaml-1.18.jar 3) jackson-annotations-2.9.0.jar 4) jackson-core-2.9.6.jar 5) jackson-databind-2.9.6.jar First we need to create an instance of YAMLFactory class. It is factory class used to create instance of YAMLParser (reader) and…… Continue reading Parsing a YAML file
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