Stringutils judge whether the string is empty

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  You can directly see the test results , Whether it's null still "" It's all empty .

StringUtils Dependency package ：

<!--  Determines if the string is empty  --><dependency>    <groupId>org.apache.commons</groupId>    <artifactId>commons-lang3</artifactId>    <version>3.8.1</version></dependency>

StringUtils Test code ：

import org.apache.commons.lang3.StringUtils;public class Action {    public static void main(String[] args) {        String a=null;        String b="";        if(StringUtils.isEmpty(a)){            System.out.println("a empty ");        }        if(StringUtils.isEmpty(b)){            System.out.println("b empty ");        }    }}

StringUtils The test results ：

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