package exception;
import java.util.Scanner;
public class StackTraceTest {
public static int factorial(int n) {
System.out.println("factorial(" + n + "):");
//打印出程序調用的信息
Throwable t = new Throwable();
StackTraceElement[] frames = t.getStackTrace();
for(StackTraceElement f : frames) {
System.out.println(f);
}
int r;
if(n <= 1) {
r = 1;
} else {
r = n * factorial(n - 1);
}
System.out.println("return " + r);
return r;
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Please input a number: ");
int n = in.nextInt();
factorial(n);
}
}