帮帮忙吧，朋友们，不行了我

public class test {
public static void main(String[] args) {
Scanner a = new Scanner(System.in);
Scanner b = new Scanner(System.in);
String x = a.nextLine();
String y = b.nextLine();
if (x.indexOf(y) != -1){
int n = x.indexOf(y);
System.out.println(n);
} else {
System.out.println("不包含");
}
}
}