Modification method of Update Maven JDK version change

The reason for the change of the JDK version of the Maven project:

1. The JDK version of a new Maven project does not correspond to the system version. 2. Right-click the Maven project -> Maven -> Update Project The JDK version has changed, 3. The operating system's JDK has been reinstalled with a new version, which is the cause of the first two phenomena main reason.

Modification method (if the system jdk version is 1.8):

Method 1: Specify the jdk version in the pom.xml file:

 

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 print ?

1. <build>  
2.         <plugins>  
3.             <plugin>  
4.                 <groupId>org.apache.maven.plugins</groupId>  
5.                 <artifactId>maven-compiler-plugin</artifactId>  
6.                 <version>3.1</version>  
7.                 <configuration>  
8.                     <source>1.8</source>  
9.                     <target>1.8</target>  
10.                 </configuration>  
11.             </plugin>  
12.         </plugins>  
13.     </build>  

Method 2: Modify settings.xml, find the profiles node, and add in it

 

 

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 print ?

1. <profile>    
2.     <id>jdk-1.8</id>    
3.      <activation>    
4.           <activeByDefault>true</activeByDefault>    
5.           <jdk>1.8</jdk>    
6.       </activation>    
7. <properties>    
8. <maven.compiler.source>1.8</maven.compiler.source>    
9. <maven.compiler.target>1.8</maven.compiler.target>    
10. <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>    
11. </properties>    
12. </profile>  

Then the update project can be kept consistent with the system jdk version. It is recommended to use the second method to reduce the configuration of each project.