freeCodeCamp/guide/english/java/throws-keyword/index.md

title
Throws

throws

The Java throws keyword is used to declare an exception. It gives an information to the programmer that there may occur an exception so it is better for the programmer to provide the exception handling code so that normal flow can be maintained.

Example:

import java.io.IOException;  
class Testthrows1{  
  void m()throws IOException{  
    throw new IOException("device error");//checked exception  
  }  
  void n()throws IOException{  
    m();  
  }  
  void p(){  
   try{  
    n();  
   }catch(Exception e){System.out.println("exception handled");}  
  }  
  public static void main(String args[]){  
   Testthrows1 obj=new Testthrows1();  
   obj.p();  
   System.out.println("normal flow...");  
  }  
}  

Multiple exceptions can also be thrown at the same time

Example:

void n()throws IOException, InterruptedException{  
    m();
  }