I see that my JDK configuration is 8, and I feel that it’s OK. Later I found out that my JDK configuration is 8 pom.xml The file configuration is as follows:

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                    <encoding>utf-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

Change 11 to 8, problem solved!!!