Question

Possible Duplicates:
What does “…” mean in Java?
Java array argument “declaration” syntax

Can anyone confirm if I’m right in seeing the Object... parameter in the method call below:

public static void setValues(PreparedStatement preparedStatement, Object... values)
    throws SQLException
{
    for (int i = 0; i < values.length; i++) {
        preparedStatement.setObject(i + 1, values[i]);
    }
}    

As an array of type Object? I don’t recall seeing ... before in Java.

Answer 1

It’s equivalent to Object[], but allows the caller to just specify the values one at a time as arguments, and the compiler will create an array. So this call:

setValues(statement, arg1, arg2, arg3);

is equivalent to

setValues(statement, new Object[] { arg1, arg2, arg3 });

See the documentation for the varargs feature (introduced in Java 5) for more information.