import
java.text.SimpleDateFormat;
import
java.util.Date;
public
class
aaaa {
public
static
void
main(String[] args)
throws
Exception {
long
start = System.currentTimeMillis();
for
(
int
i =
0
; i <
5
; i++) {
Thread.sleep(
10
);
}
long
end = System.currentTimeMillis();
System.out.println(
"for循环耗时"
+ (end - start) +
"毫秒"
);
Date nowTime =
new
Date(System.currentTimeMillis());
SimpleDateFormat sdFormatter =
new
SimpleDateFormat(
"yyyy-MM-dd"
);
String now = sdFormatter.format(nowTime);
System.out.println(now);
File f =
new
File(
"c:\"
+System.currentTimeMillis() +
""
);
f.createNewFile();
}
}