java包的引入怎么不行?import java.util.*public class Scanner {public static void main(String[] args
java包的引入怎么不行? import java.util.*;
public class Scanner { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.println("请输入第一个字符: "); System.out.println("您输入了%d!\n",scanner.nextInt()); } }