how to give conatiner border in flutter code example

Example 1: border for container in flutter

new Container(
  margin: const EdgeInsets.all(15.0),
  padding: const EdgeInsets.all(3.0),
  decoration: BoxDecoration(
    border: Border.all(color: Colors.blueAccent)
  ),
  child: Text("My Awesome Border"),
)

Example 2: container border flutter

BoxDecoration myBoxDecoration() {
  return BoxDecoration(
    border: Border.all(),
  );
}