How To Read Xml File In Java

In this article let s explore java xml parser in detail.

How to read xml file in java. We will also learn how to parse xml file to java object using dom xml parser. Java provides many ways to parse an xml file. See following sax callback methods. For large xml files you should use sax parser. In this tutorial we will show you how to read an xml file via dom xml parser.

In short it turns a xml file into dom or tree structure and you have to traverse a node by node to get what you want. How to read xml file in java dom parser are good for small xml documents but since it loads complete xml file into memory it s not good for large xml files. Then models it in a tree structure for easy traversal or manipulation. An xml parser provides the required functionality to access or modify data in an xml document. Reading xml file in java is much different from reading other files like docx and txt because xml file contains data between the tags.

In this article we will learn how to read xml file in java. The dom api provides the classes to read and write an. There are two parsers in java which parses an xml file. Dom parser parses the entire xml document and loads it into memory. Sax parser stax parser.

Program to read xml file in java using java jdom parser 1. In this tutorial we will read the xml file and parse it to create an object from it. Sax parser is working differently with a dom parser it neither load any xml document into memory nor create any object representation of the xml document. There are many available classes in the java api that can be used to read and write files in java. If you re interested in sax or stax parser please refer to these tutorials.

Input jdom users xml file xml file we will read make sure that you have a jdom users xml file in a file system and add the below contents to this file. Dom xml parser parses the entire xml document and loads it into memory. Filereader bufferedreader files scanner fileinputstream filewriter bufferedwriter fileoutputstream etc which one to use depends on the java version you re working with and whether you need to read bytes or characters and the size of the file lines etc. Consider we have the following students xml file. Instead the sax parser use callback function org xml sax helpers defaulthandler to informs clients of the xml document structure sax parser is faster and uses less memory than dom parser.