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Java Properties loadFromXML() Method with Example

Properties Class loadFromXML() method: Here, we are going to learn about the loadFromXML() method of Properties Class with its syntax and example.
Submitted by Preeti Jain, on March 21, 2020

Properties Class loadFromXML() method

• loadFromXML() method is available in java.util package.
• loadFromXML() method is used to load all the properties denoted by the XML file on the given input stream (is) into this Properties table.
• loadFromXML() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• loadFromXML() method may throw an exception at the time of loading file.
  • IOException: This exception may throw while reading from the input stream.
  • InvalidPropertiesFormatException: This exception may throw when the Properties format is null exists.
  • NullPointerException: This exception may throw when the given parameter is null exists.

Syntax:

    public void loadFromXML(InputStream is);

Parameter(s):

• InputStream is – represents the input stream to read XML file with the help of the given.

Return value:

The return type of the method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void loadFromXML(InputStream is) method 
// of Properties


import java.io.*;
import java.util.*;
public class StoreToXMLOfProperties {
 public static void main(String arg[]) throws Exception {
  // Instantiate Properties object
  Properties prop = new Properties();

  prop.put("10", "C");
  prop.put("20", "C++");
  prop.put("30", "JAVA");
  prop.put("40", "PHP");
  prop.put("50", "SFDC");

  // Instantiates stream for input
  // and output
  FileOutputStream fos = new FileOutputStream("properties.xml");
  FileInputStream is = new FileInputStream("properties.xml");

  // By using storeToXML() method isto
  // store the properties in the given
  // XML file
  prop.storeToXML(fos, null);

  // By using loadFromXML() method isto
  // load the properties from the given
  // is stream
  prop.loadFromXML(is);

  // Display properties on console
  prop.list(System.out);
 }
}

Output

-- listing properties --
50=SFDC
40=PHP
30=JAVA
20=C++
10=C