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Generating Custom Exception in java

Custom Exception
  • Java provide throw keyword to generate your own Exception.
    you can generate your own Exception class by Extending another Predefined
    Exception class.
    syntax:
    Throw new MyException();
How to generate custom Exception in java ?
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package exceptionHandling;
 
import java.util.Scanner;
 
//class that extends Throwable
 
class Myexception extends Throwable
 {
 
 }
 
//main class
public class Throw 
{
public static void main(String[] args) 
{
 
	Scanner c=new Scanner(System.in);
	System.out.println("enter your age");
 
	int n=c.nextInt();
 
	System.out.println("checking......");
 
	if(n<18)
	{
		try 
		{	
	          throw new myexception();
		}
 
		catch (myexception e) 
		{
		  System.out.println("try next year,your age is not valid");
		}
 
	}
 
	else
	{
	 System.out.println("thank you for voting ");
	}	
 
  }
 
}
output:
 
enter your age
17
checking......
try next year,your age is not valid