Creating Own Exception in Java Example

Java.lang.Exception Class is the superclass for all exceptions in Java. To creating our own extensions, we simply extend this class.

          class StringTooLarge extends Exception 
          { 
                        String s; 
                        StringTooLarge(String h) 
                        { 
                             s=h; 
                         } 
                                 public String toString() 
                                     { 
                                        return "String is Too Large Exception"; 
                                     } 
          } 
                 public class OwnExceptionJavaExample 
                   { 
                            public void disp(String k) 
                                  { 
                                      int n; 
                                      try 
                                        { 
                                           n = k.length(); 
                                           if(n>10) 
                                           throw new StringTooLarge(k); 
                                            System.out.println("String is : "+k); 
                                         } 
                                                 catch(StringTooLarge e) 
                                                 { 
                                                    System.out.println("Caught : "+e); 
                                            } 
                                  }   
                                        public static void main(String args[]) 
                                     { 
                                        OwnExceptionJavaExample OE = new OwnExceptionJavaExample(); 
                                        OE.disp("India"); 
                                        OE.disp("ecomputernotes.com"); 
                                     } 
                   }