根据每行固定数换行

package com.sqltime;

import java.util.LinkedHashMap;
import java.util.Map;

public class TestUtil {
    public static void main(String[] args) {
        LinkedHashMap<String, Object> titleMap = new LinkedHashMap();
        titleMap.put("aa", "111");
        titleMap.put("bb", "222");
        titleMap.put("cc", "333");
        titleMap.put("dd", "444");
        titleMap.put("ee", "555");
        titleMap.put("ff", "666");
        titleMap.put("gg", "777");
        titleMap(3, titleMap);
    }
    public static LinkedHashMap<String, Object> titleMap(int rowNum, LinkedHashMap<String, Object> titleMap){
        int indexNum = 1;
        for (Map.Entry<String, Object> entry : titleMap.entrySet()) {
            System.out.print(entry.getKey() +"==>" + entry.getValue() +"\t");
            if(indexNum == rowNum){
                indexNum = 1;
                System.out.println("");
                continue;
            }
            indexNum ++;
        }
        return titleMap;
    }
}

/* 输出结果 */
aa==>111	bb==>222	cc==>333	
dd==>444	ee==>555	ff==>666	
gg==>777