int num = 20;

ExecutorService service = Executors.newFixedThreadPool(num);

int rows = 3568;

int pageSize = 100;

int pageSum = (rows - 1) / pageSize + 1;

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

for (int i = 1; i <= pageSum; i++){

list.add(i);

}

int baseNum = pageSum / num;

int remainderNum = pageSum % num;

int end = 0;

for (int i = 0; i <num; i++)

{

int start = end ;

end = start + baseNum;

if(i == (num-1)){

end = pageSum;

}else if( i < remainderNum){

end = end + 1;

}

int finalEnd = end;

service.submit(

new Runnable() {

@Override

public void run() {

List<Integer> listSmall = list.subList(start, finalEnd? );

try {

for (Integer integer : listSmall)

{

System.out.println(integer);

}

} catch (Exception e) {

e.printStackTrace();

}

}

});

}