Implement retry in Java for http request

Sure, here's an example of how to implement retry in Java for an HTTP request using the Apache HttpClient library:

import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.protocol.HttpContext;

import java.io.IOException;

public class HttpRequestRetry {

    private static final int MAX_RETRIES = 3;

    public static void main(String[] args) throws IOException {
        HttpClient httpClient = HttpClientBuilder.create().build();

        HttpGet httpGet = new HttpGet("https://www.example.com");

        int retryCount = 0;
        boolean success = false;

        while (retryCount < MAX_RETRIES && !success) {
            try {
                httpClient.execute(httpGet, (HttpContext) null);
                success = true;
            } catch (IOException e) {
                System.out.println("Request failed, retrying...");
                retryCount++;
            }
        }

        if (success) {
            System.out.println("Request succeeded after " + retryCount + " retries.");
        } else {
            System.out.println("Request failed after " + retryCount + " retries.");
        }
    }
}

In this example, we create an `HttpClient` instance using the `HttpClientBuilder` class, and then create an `HttpGet` request object for the URL we want to retrieve. We then loop through the request up to a maximum number of retries (in this case, 3), attempting the request each time and catching any `IOException` that is thrown. If the request succeeds, we set the `success` flag to true and exit the loop. If the request fails after the maximum number of retries, we print a failure message.