如何从文本区域逐行读取

user_input = input("请输入文本：")
for line in user_input.split("\n"):
    print(line)

Scanner input = new Scanner(System.in);
while (input.hasNextLine()) {
    String line = input.nextLine();
    System.out.println(line);
}

const input = readline();
while (input) {
    const line = input.split("\n")[0];
    console.log(line);
    input = readline();
}