login via HttpURLConnection return status code 200 while it should redirect - httpurlconnection

Question

I tries to login to the website using username and password. when I make a #HttpURLConnection and post it, the status code is 200 but it actually doesn't login. when I checked the login process with Chrome #DevTools Console, I found that after entering the login button, the parameters are sent to the address I used and it returned 302 as a status code. even I add this line to my code by the result doesn't changed.
connection2.setInstanceFollowRedirects(true);
here is my code.
String loginPageURL = "https://AAAAAAAAAA";
CookieManager cookieManager = new CookieManager();
cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
cookies.forEach(cookie -> cookieManager.getCookieStore().add(null, cookie));
URL url2 = new URL(loginPageURL);
HttpURLConnection connection2 = (HttpURLConnection) url2.openConnection();
connection2.setRequestProperty("Cookie",
StringUtils.join(cookieManager.getCookieStore().getCookies(), ";"));
connection2.setInstanceFollowRedirects(true);
String loginPayload ="mypayload";
connection2.setRequestMethod("POST");
connection2.setDoOutput(true);
connection2.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
connection2.setRequestProperty("Accept-Encoding", "deflate, br");
connection2.setRequestProperty("Accept-Language", "en-US,en;q=0.9,fa;q=0.8");
connection2.setRequestProperty("Cache-Control", "max-age=0");
connection2.setRequestProperty("Connection", "keep-alive");
connection2.setRequestProperty("Content-Length", String.valueOf(loginPayload.length()));
connection2.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection2.setRequestProperty("Host", "https://BBBBBBBBBB");
connection2.setRequestProperty("Origin", "https://BBBBBBBBBB");
connection2.setRequestProperty("Referer", "https://AAAAAAAAAA");
connection2.setRequestProperty("sec-ch-ua", " Not A;Brand;v=99, Chromium;v=100, Google Chrome;v=100");
connection2.setRequestProperty("sec-ch-ua-mobile", "?0");
connection2.setRequestProperty("sec-ch-ua-platform", "Windows");
connection2.setRequestProperty("Sec-Fetch-Dest", "document");
connection2.setRequestProperty("Sec-Fetch-Mode", "navigate");
connection2.setRequestProperty("Sec-Fetch-Site", "same-origin");
connection2.setRequestProperty("Sec-Fetch-User", "?1");
connection2.setRequestProperty("Upgrade-Insecure-Requests", "1");
connection2.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36");
DataOutputStream out = new DataOutputStream(connection2.getOutputStream());
out.writeBytes(loginPayload);
System.out.println("login connection status code: "+connection2.getResponseCode());
System.out.println("content length "+loginPayload.length());
out.close();
System.out.println("*************************************************************");
int status = connection2.getResponseCode();
if (status == HttpURLConnection.HTTP_OK) {
String header = connection2.getHeaderField("Location");
System.out.println(header);
}
Anybody can help me figuring out where the problem is?
thanks in advance.