Error "Source option 5 is no longer supported. Use 6 or later" on Maven compile

Question

I am getting the following error on $ mvn compile:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project Sym360: Compilation failure: Compilation failure: 
[ERROR] Source option 5 is no longer supported. Use 6 or later.
[ERROR] Target option 1.5 is no longer supported. Use 1.6 or later.
[ERROR] -> [Help 1]

Here is the code of my pom.xml:

<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 
 http://maven.apache.org/maven-v4_0_0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <groupId>com.test.app</groupId>
 <artifactId>Tset</artifactId>
 <packaging>jar</packaging>
 <version>1.0-SNAPSHOT</version>
 <name>Test</name>
 <url>http://maven.apache.org</url>

 <properties>
   <maven.compiler.source>6</maven.compiler.source>
   <maven.compiler.target>1.6</maven.compiler.target>
 </properties>

<build>
<pluginManagement>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.22.1</version>
    </plugin>
  </plugins>
</pluginManagement>
</build>
<dependencies>

<!-https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium- 
java -->
<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>3.14.0</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.testng/testng -->
<dependency>
    <groupId>org.testng</groupId>
    <artifactId>testng</artifactId>
    <version>6.14.3</version>
    <scope>test</scope>
</dependency>

I tried to add properties in the pom.xml code, but still getting the same error.

Answer 1

What helped me was these lines in pom.xml file

<properties>
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
</properties>

Answer 2

I had same issue, the problem is with properties. Check your JavaSE version in your project, it will be displayed beside JRE System Library folder in your project. If it is 1.5, then it will throw an error. Most probably you will have a updated version, so check the version and update it. I have updated it below based on your code.

<properties>
   <maven.compiler.source>1.6</maven.compiler.source>
   <maven.compiler.target>1.6</maven.compiler.target>
 </properties>