JDK8 - Optional

代码Github地址
https://github.com/FrankZuozuo/JavaSpecial

/**
 * @author Created by 谭健 on 2018/3/29 0029. 星期四. 9:59.
 * © All Rights Reserved.
 */
public class AboutOptional {
   


    public static void main(String[] args) {
        test();
    }

    private static void test() {


        String foo = "foo", foobar, fb;

        List<String> list = Lists.newA
  

 

  
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文章来源: wretchant.blog.csdn.net，作者：简简单单OnlineZuozuo，版权归原作者所有，如需转载，请联系作者。

原文链接：wretchant.blog.csdn.net/article/details/79739786