功能：比较两个字符串是否相等

1.引入依赖

<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.12.0</version> </dependency>

2.代码如下

public class Maintest { public static void main(String[] args) { System.out.println(StringUtils.equals(“”, “”)); System.out.println(StringUtils.equals(null, null)); System.out.println(StringUtils.equals(null, “”)); System.out.println(StringUtils.equals(“”, null)); System.out.println(StringUtils.equals(null, “”)); System.out.println(StringUtils.equalsIgnoreCase(“ss”, “Ss”)); }}

输出入下：