1、引用数据类型Scanner(Scanner类)
import java.util.*; public class Input { public static void main(String[] args) { Scanner reader=new Scanner(System.in); System.out.println("请输入一个正整数."); int i=reader.nextInt(); System.out.println(i); System.out.println("请输入一段字符串."); String s=reader.next(); System.out.println(s); } }
2、BufferedReader类
import java.io.*; public class Input { public static void main(String[] args) throws IOException { String str; BufferedReader buf=new BufferedReader(new InputStreamReader(System.in)); System.out.println("请输入一个正整数"); str=buf.readLine(); int i=Integer.parseInt(str); System.out.println("输入的数字为"+i); } }