javaloopsdo-while

Does `continue` jump to the top of a `do while`?

I have a do while that looks like:

User user = userDao.Get(1);

do
{
  // processing...

  // get the next user
  user = UserDao.GetNext(user.Id);

  if( user == null )
    continue; // will this jump to the top of the loop?
}
while( user != null )

Will it go to the top of the do statement, and user == null so things are going to break?

Maybe I should rework the loop to a while statement?

Solution

  • The continue makes it jump to the evaluation at the botton so the program can evaluate if it has to continue with another iteration or exit. In this case it will exit.

    This is the specification: http://java.sun.com/docs/books/jls/third_edition/html/statements.html#6045

    Such language questions you can search it in the Java Language Specification: http://java.sun.com/docs/books/jls/