Question

Possible Duplicate:
Maven Install: “Annotations are not supported in -source 1.3”

I use ubuntu 10.04 and open-jdk-1.6.0.

This is my mvn -version output:

Apache Maven 2.2.1 (rdebian-1)
Java version: 1.6.0_20
Java home: /usr/lib/jvm/java-6-openjdk/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux" version: "2.6.32-37-generic" arch: "i386" Family: "unix"

But when I run mvn test, there are some errors:

/home/unionx/workspace/java/try-netty/src/test/java/net/bluedash/trynetty/DataTypeTest.java:[3,7] static import declarations are not supported in -source 1.3
(use -source 5 or higher to enable static import declarations)
import static org.junit.Assert.assertEquals;

/home/unionx/workspace/java/try-netty/src/test/java/net/bluedash/trynetty/DataTypeTest.java:[11,2] annotations are not supported in -source 1.3
(use -source 5 or higher to enable annotations)
@Test

/home/unionx/workspace/java/try-netty/src/test/java/net/bluedash/trynetty/ChannelBufferTest.java:[3,7] static import declarations are not supported in -source 1.3
(use -source 5 or higher to enable static import declarations)
import static org.junit.Assert.*;

/home/unionx/workspace/java/try-netty/src/test/java/net/bluedash/trynetty/ChannelBufferTest.java:[11,2] annotations are not supported in -source 1.3
(use -source 5 or higher to enable annotations)
@Test

/home/unionx/workspace/java/try-netty/src/test/java/net/bluedash/trynetty/PathTest.java:[3,7] static import declarations are not supported in -source 1.3
(use -source 5 or higher to enable static import declarations)
import static org.junit.Assert.*;

/home/unionx/workspace/java/try-netty/src/test/java/net/bluedash/trynetty/PathTest.java:[11,2] annotations are not supported in -source 1.3
(use -source 5 or higher to enable annotations)
@Test

I seems that the mvn thought I use java 1.3, perhaps it just support java 1.5?

Answer 1

http://maven.apache.org/general.html#Compiling-J2SE-5

How do I set up Maven so it will compile with a target and source JVM of my choice?
You must configure the source and target parameters in your pom. For example, to set the source and target JVM to 1.5, you should have in your pom:

...
<build>
...
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>2.3.2</version>
       <configuration>
        <source>1.5</source>
        <target>1.5</target>
       </configuration>
    </plugin>
  </plugins>
...
</build>
...