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Java ClassLoader findResource() method with example

ClassLoader Class findResource() method: Here, we are going to learn about the findResource() method of ClassLoader Class with its syntax and example.
Submitted by Preeti Jain, on November 28, 2019

ClassLoader Class findResource() method

• findResource() method is available in java.lang package.
• findResource() method is used to find the resource with the given resource name in URL objects.
• findResource() 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.
• findResource() method may throw an exception at the time of finding the resources.
  IOException: This exception may throw during I/O error.

Syntax:

    protected URL findResource(String resource_name);

Parameter(s):

• String resource_name – represents the name of the resource.

Return value:

The return type of this method is URL, it returns URL object for the given resource.

Example:

// Java program to demonstrate the example 
// of URL findResource(String resource_name)
// method of ClassLoader 

import java.net.*;

class FindResource extends ClassLoader {
    void findResource() {
        // It checks whether the given resource is found
        // or not by using the findResource()
        URL res_url = super.findResource("getRproperties().doc");

        // If res_url not null that means res_url is found
        // then don't need to load again
        if (res_url != null)
            System.out.println("Resource Found: " + res_url);
        else
            System.out.println("Resource Not Found!!!");
    }
}

public class Main {
    public static void main(String[] args) throws Exception {
        // Creating an instance of FindResource
        FindResource fc = new FindResource();
        fc.findResource();
    }
}

Output

Resource Not Found!!!