----
title: Java常用代码块
date: 2016-11-08
tags: Java
comments: false
cover: https://static.jqwei.com/blog/img/IMG_3461.PNG
categories: 运维工具
---

## java常用代码块

### map 根据Key排序

``` java 
    /**
     * map 按 key 升序排序
     *
     * @param map
     * @return
     */
    private static Map<String, Object> sortByKey(Map<String, Object> map) {
        Map<String, Object> result = new LinkedHashMap<>(map.size());
        map.entrySet().stream()
                .sorted(Map.Entry.comparingByKey())
                .forEachOrdered(e -> result.put(e.getKey(), e.getValue()));
        return result;
    }
```