class MyException extends Exception{
private String str;
MyException(String s){
	    str=s;
}
String getstr(){
	  return str;
}
void setstr(String s){
str=s;
}
}
public class MyExceptionDemo{
public static void main(String []args){
try{
	          throw new MyException("MyException occur!");
	   }catch(MyException e){
	         String ss=e.getstr();
	         System.out.println("My exception message : "+ss);
	   }
}
}