i try it in 20.12,it is also very slow.my code:
public static void main(String[] args) {
for (int i = 0; i < 10; i++) {
long begin = System.currentTimeMillis();
try {
Document doc = new Document();
} catch (Exception e) {
e.printStackTrace();
} finally {
System.out.println(i + " use :" + (System.currentTimeMillis() - begin));
}
}
}
out:
0 use :1314
1 use :5
2 use :4
3 use :4
4 use :5
5 use :4
6 use :3
7 use :3
8 use :3
9 use :3