Maven Guava missing method Sets.symmetricDifference-CodePudding

I have a very strange problem. I added the following dependency to my pom.xml

<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>31.0.1-jre</version>
</dependency>

When I try to call write the following code:

import com.google.common.collect.Sets;

Sets.symmetricDifference(currentSet, referencedSet);

My compiler says: Cannot resolve method 'symmetricDifference' in 'Sets'

Yet I know that this method exists, I even found it in google's repository

Does anyone understand why this might happen? I also tried different guava versions, but nothing seems to help.

Edit Error message when executing mvn install:

[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /C:/somePath/backend/src/main/java/someOtherPath/service/DataVerificationServiceImpl.java:[58,76] cannot find symbol
  symbol:   method symmetricDifference(java.util.Set<org.springframework.data.util.Pair<java.time.ZonedDateTime,java.time.ZonedDateTime>>,java.util.Set<org.springframework.data.util.Pair<java.time.ZonedDateTime,java.time.ZonedDateTime>>)
  location: class com.google.common.collect.Sets

Edit 2:

Full pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.5</version>
    </parent>
    <artifactId>my_project</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>My project</name>
    <description>My Project Description</description>
    <properties>
        <java.version>11</java.version>
        <keycloak.version>15.0.0</keycloak.version>
    </properties>
    <dependencies>

        <!-- Spring boot -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.keycloak</groupId>
            <artifactId>keycloak-spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-boot-starter</artifactId>
            <version>3.0.0</version>
        </dependency>

        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-processor</artifactId>
            <version>1.4.2.Final</version>
        </dependency>
        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct</artifactId>
            <version>1.4.2.Final</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok-mapstruct-binding</artifactId>
            <version>0.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
        </dependency>

        <dependency>
            <groupId>org.mariadb.jdbc</groupId>
            <artifactId>mariadb-java-client</artifactId>
            <version>2.7.3</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.5.7.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-jpamodelgen</artifactId>
            <version>5.5.7.Final</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.1</version>
        </dependency>

        <dependency>
            <groupId>org.springdoc</groupId>
            <artifactId>springdoc-openapi-maven-plugin</artifactId>
            <version>1.3</version>
        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>31.0.1-jre</version>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.keycloak.bom</groupId>
                <artifactId>keycloak-adapter-bom</artifactId>
                <version>${keycloak.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <finalName>application</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <layers>
                        <enabled>true</enabled>
                    </layers>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springdoc</groupId>
                <artifactId>springdoc-openapi-maven-plugin</artifactId>
                <version>1.2</version>
                <configuration>
                    <apiDocsUrl>http://localhost:8080/v3/api-docs</apiDocsUrl>
                    <outputFileName>swagger.json</outputFileName>
                    <outputDir>srcrces</outputDir>
                    <skip>false</skip>
                </configuration>
                <executions>
                    <execution>
                        <id>integration-test</id>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

CodePudding user response：

The imports and usage of the library is correct. The version also includes the method that you want, I've just checked.

This indicates that the compiler is unable to locate the relevant jar on the classpath.

Can you please run mvn install and if it reports any errors add them to the original post and also add a comment here to notify me.

EDIT:

The “cannot find symbol” error comes up mainly when we try to use a variable that is not defined or declared in our program.

When our code compiles, the compiler needs to verify all identifiers we have. The error “cannot find symbol” means we're referring to something that the compiler doesn't know about.

As it turns out, in your case it is a dependency version conflict which can be detected and resolved like this https://pretagteam.com/question/conflicting-library-version-in-a-java-maven-project