Java中读取控制台输入的多种方式

使用Scanner类读取控制台输入：

import java.util.Scanner;public class Main {    public static void main(String[] args) {        Scanner scanner = new Scanner(System.in);                // 读取字符串        System.out.print("Enter a string: ");        String str = scanner.nextLine();        System.out.println("You entered: " + str);                // 读取整数        System.out.print("Enter an integer: ");        int num = scanner.nextInt();        System.out.println("You entered: " + num);                scanner.close();    }}

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;public class Main {    public static void main(String[] args) throws IOException {        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));                // 读取字符串        System.out.print("Enter a string: ");        String str = reader.readLine();        System.out.println("You entered: " + str);                // 读取整数        System.out.print("Enter an integer: ");        int num = Integer.parseInt(reader.readLine());        System.out.println("You entered: " + num);                reader.close();    }}

注意：使用BufferedReader类读取整数时，需要将读取的字符串转换为整数类型。