怎么回事？求大神指教
import java.util.Scanner;
public class Sanjiao {
public static void main(String[] args) {
Scanner input =new Scanner(System.in);
System.out.print("打印\"直角三角\"行数:");
int n = input.nextInt();
for (int i = 1; i <= n; i++ ) {
for (int j = 1; j <= i ; j++ ) {
System.out.print("*");
}
System.out.println();
}
}
}
怎么回事？输出的字？
