throw EXCEPTIONS IN JAVA

Java:Using throw

When to use throw in a Java method declaration?

All methods use the throw statement to throw an exception. The throw statement requires a single argument: a Throwable object. Throwable object are instances of any subclass of the Throwable classThe flow of execution stops immediately after the throw statement;any subsequent statements are not executed.

The general form is as shown below:

throw ThrowableInstance;

Here,ThrowableInstance must be an object of type Throwable or a subclass of Throwable.

Example:

class Excep13
{  
  
   static void validate(int age)
{  
     if(age<18)  
      throw new ArithmeticException("not valid");  
     else  
      System.out.println("welcome to vote");  
   }  
     
   public static void main(String args[])
{  
      validate(13);  
      System.out.println("rest of the code...");  
  }  
}  

Output:
Exception in thread main java.lang.ArithmeticException: not valid