eraser.java

package eraser;

import com.google.gson.JsonElement;
import com.vk.api.sdk.client.TransportClient;
import com.vk.api.sdk.client.VkApiClient;
import com.vk.api.sdk.client.actors.ServiceActor;
import com.vk.api.sdk.client.actors.UserActor;
import com.vk.api.sdk.httpclient.HttpTransportClient;
import com.vk.api.sdk.objects.base.responses.OkResponse;
import com.vk.api.sdk.objects.messages.responses.GetDialogsResponse;
import com.vk.api.sdk.objects.wall.WallPostFull;
import com.vk.api.sdk.objects.wall.responses.GetResponse;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

public class Main {
    public static void main(String [] args) {
        final Integer appId = $app_id;
        final Integer userId = $your_userid;
        final String token = $token;

        TransportClient transportClient = HttpTransportClient.getInstance();
        VkApiClient vk = new VkApiClient(transportClient);

        //ServiceActor actor = new ServiceActor(appId, token);
        UserActor actor = new UserActor(userId, token);
        Integer offset = 5;


        List<Integer> toDelete = new ArrayList<>();

        while (true) {
            try {
                GetResponse getResponse = vk.wall().get(actor)
                        .count(100)
                        .ownerId(userId)
                        .offset(offset)
                        .execute();

                System.out.println(getResponse.getCount());
                System.out.println(getResponse.getItems().size());

                offset += getResponse.getItems().size();

                getResponse.getItems().stream()
                        .filter(post -> post.getDate() < 1379980800)
                        .map(post -> post.getId())
                        .collect(Collectors.toCollection(() -> toDelete));

                if (offset > getResponse.getCount())
                    break;

                if (getResponse.getItems().size() == 0) {
                    break;
                }
                System.out.println("already got: " + offset + " todelete: " + toDelete.size());
                Thread.sleep(3500);
            } catch (Exception e) {
                System.out.println(e.toString());
                break;
            }
        }

        System.out.println(toDelete.size() + " posts would be deleted");

        Integer skip = 0;

        while (true) {
            try {
                final Integer limit = 25;
                JsonElement response = vk.execute().batch(actor, toDelete.stream()
                        .skip(skip)
                        .limit(limit)
                        .map(id -> vk.wall().delete(actor)
                                .postId(id)
                                .ownerId(userId))
                        .collect(Collectors.toList()))
                        .execute();

                skip += limit;

                System.out.println(skip + " posts deleted");
                System.out.println(response.toString());

                if (skip > toDelete.size())
                    break;

                Thread.sleep(3500);
            } catch (Exception e) {
                System.out.println(e.toString());
                break;
            }
        }
    }
}