import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); String inputStr = in.nextLine(); //字符串 String inputTarget = in.nextLine(); //目标字符串 System.out.println(countStr(inputStr, inputTarget)); } ...