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The collections of utility classes is used regularly
There is a newer version: 1.0.3
/************************************************
 * Copyright 2017 by DTT - All rights reserved. *    
 ************************************************/
package com.github.naviit.libs.common.model;

import java.util.ArrayList;
import java.util.List;

import com.github.naviit.libs.common.util.DTTConstant;
import com.github.naviit.libs.common.util.JsonUtil;

/**
 * @author  Dang Thanh Tung 
 * {@literal }
 * @since   09/07/2017
 */
public class Page {

  private int pageNumber;
  private int pageSize;
  public List pageItems;

  private long totalItems;
  private int pagesAvailable;

  private long time;

  public Page() {
    this.pageItems = new ArrayList(DTTConstant.DEFAULT_PAGE_SIZE);
  }

  public Page(int pageNumber, int pageSize) {
    this.pageNumber = pageNumber;
    this.pageSize = pageSize;
    this.pageItems = new ArrayList(pageSize);
  }

  public Page(int pageNumber, int pageSize, long totalItems) {
    this.pageNumber = pageNumber;
    this.pageSize = pageSize;
    this.pageItems = new ArrayList(pageSize);

    this.totalItems = totalItems;
    this.computePagesAvailable(totalItems, pageSize);
  }

  public Page(int pageNumber, int pageSize, long totalItems, int pagesAvailable) {
    this.pageNumber = pageNumber;
    this.pageSize = pageSize;
    this.pageItems = new ArrayList(pageSize);

    this.totalItems = totalItems;
    this.pagesAvailable = pagesAvailable;
  }

  public Page(int pageNumber, int pageSize, List pageItems, long totalItems) {
    this.pageNumber = pageNumber;
    this.pageSize = pageSize;
    this.pageItems = pageItems;

    this.totalItems = totalItems;
    this.computePagesAvailable(totalItems, pageSize);
  }

  public Page(int pageNumber, int pageSize, List pageItems, long totalItems, int pagesAvailable) {
    this.pageNumber = pageNumber;
    this.pageSize = pageSize;
    this.pageItems = pageItems;

    this.totalItems = totalItems;
    this.pagesAvailable = pagesAvailable;
  }

  public int getPageNumber() { return pageNumber; }
  public void setPageNumber(int pageNumber) { this.pageNumber = pageNumber; }

  public int getPageSize() { return pageSize; }
  public void setPageSize(int pageSize) { this.pageSize = pageSize; }

  public int getPagesAvailable() { return pagesAvailable; }
  public void setPagesAvailable(int pagesAvailable) { this.pagesAvailable = pagesAvailable; }

  public long getTotalItems() { return totalItems; }
  public void setTotalItems(long totalItems) { this.totalItems = totalItems; }

  public long getTime() { return time; }
  public void setTime(long time) { this.time = time; }

  public List getPageItems() { return pageItems; }
  public void setPageItems(List pageItems) { this.pageItems = pageItems; }

  @SuppressWarnings("hiding")
  public void computePagesAvailable(long totalItems, int pageSize) {
    this.pagesAvailable = 0;
    if(totalItems % pageSize == 0) {
      this.pagesAvailable = (int) (totalItems / pageSize);
    } else {
      this.pagesAvailable = (int) (totalItems / pageSize) + 1;
    }
  }

  @Override
  public String toString() {
    return JsonUtil.toJson(this);
  }

}