how to give border in flutter code example

Example 1: flutter container border

Container(
  decoration: BoxDecoration(
    border: Border.all(
      color: Colors.red,  // red as border color
    ),
  ),
  child: Text("Your text...")
)

Example 2: 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 3: container border flutter

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

Example 4: flutter gradient border

final kInnerDecoration = BoxDecoration(
  color: Colors.white,
  border: Border.all(color: Colors.white),
  borderRadius: BorderRadius.circular(32),
);

final kGradientBoxDecoration = BoxDecoration(
  gradient: LinearGradient(colors: [Colors.black, Colors.redAccent]),
  border: Border.all(
    color: kHintColor,
  ),
  borderRadius: BorderRadius.circular(32),
);