TextField(
            decoration: InputDecoration(
              labelText: "Enter text",
              border: OutlineInputBorder(),
            ),
          ),

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SafeArea(
          minimum: EdgeInsets.all(16.0),
          child: TextField(
            decoration: InputDecoration(
              labelText: "Enter text",
              border: OutlineInputBorder(),
            ),
          ),
        ),
      ),
    );
  }
}

  final TextEditingController _controller = TextEditingController();

  TextField(
                controller: _controller,
)

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  final TextEditingController _controller = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SafeArea(
          minimum: EdgeInsets.all(16.0),
          child: Column(
            children: [
              TextField(
                controller: _controller,
                decoration: InputDecoration(
                  labelText: "Enter text",
                  border: OutlineInputBorder(),
                ),
              ),
              ElevatedButton(
                onPressed: () {
                  print("TextField Value: ${_controller.text}");
                },
                child: Text("Print Value"),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

 Text("TextField Value: ${_controller.text}"),

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  var _text = ""; 

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SafeArea(
          minimum: EdgeInsets.all(16.0),
          child: Column(
            children: [
              TextField(
                decoration: InputDecoration(
                  labelText: "Enter text",
                  border: OutlineInputBorder(),
                ),
                onChanged: (value) {
                  setState(() {
                    _text = value; 
                  });
                },
              ),
              Text(
                "Entered Text: $_text",
                style: TextStyle(fontSize: 18),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

TextField(
  obscureText: true,
  decoration: InputDecoration(
    labelText: "Password",
    border: OutlineInputBorder(),
  ),
);

TextField(
  maxLines: 3,
);