Java分批执行list集合

import java.util.List;
import java.util.function.Consumer;

public class BatchSaveUtils {
    private BatchSaveUtils() {
    }

    public static <T> void batchSave(List<T> l, int perCount, Consumer<List<T>> c) {
        if (perCount <= 0) {
            throw new IllegalArgumentException("perCount 必须大于0");
        } else {
            for(int startIndex = 0; startIndex < l.size(); startIndex += perCount) {
                int endIndex = startIndex + perCount > l.size() ? l.size() : startIndex + perCount;
                c.accept(l.subList(startIndex, endIndex));
            }

        }
    }
}