Demo of ClassNotFoundException

Example of ClassNotFoundException present in java.lang package

Figure1

Class Hierarchy:

ClassNotFoundException is a class present in java.lang.* package and has following class hierarchy.

Figure2

Description:

Thrown when an application tries to load in a class through its string name using:

The forName method in class Class.

The loadClass method in class ClassLoader.

but no definition for the class with the specified name could be found.

Since:

JDK1.0

Example:

package com.javamultiplex.java.lang.exceptions; /** * @author Rohit Agarwal * @version 1.0 * @category java.lang/Exception * @since JDK 1.0 */ public class ClassNotFoundExceptionDemo { public static void main(String[] args) { try { /* * ClassNotFoundException will be thrown because OracleJdbcDriver * class is not present in classpath. */ // Method 1 Class.forName("oracle.jdbc.OracleJdbcDriver"); // Method 2 ClassLoader classLoader = ClassLoader.getSystemClassLoader(); classLoader.loadClass("oracle.jdbc.OracleJdbcDriver"); } catch (ClassNotFoundException e) { e.printStackTrace(); } } }

Output:

Figure3

References:

https://docs.oracle.com/javase/8/docs/api/java/lang/ClassNotFoundException.html

Thank you friends, I hope you have clearly understood the solution of this problem. If you have any doubt, suggestion or query please feel free to comment below. You can also discuss this solution in our forum.

About Author:

I am simple guy with lot of ambitions. My main motive is to share whatever knowledge I have related to programming. With me you can easily learn how to solve any programming problem in Java.You can connect with me on social networking sites also.

Let's Get Connected: Linkedin | Facebook | Google Plus