java字符串怎么输入

String myString = "Hello world!";

import java.util.Scanner;

public class StringInput {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a string: ");
        String myString = scanner.nextLine();
        scanner.close();
    }
}

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class StringInput {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("Enter a string: ");
        String myString = reader.readLine();
        reader.close();
    }
}

import java.io.IOException;

public class StringInput {
    public static void main(String[] args) throws IOException {
        System.out.print("Enter a string: ");
        byte[] bytes = new byte[100];
        System.in.read(bytes);
        String myString = new String(bytes).trim();
    }
}