Flink Compile Error Static methods in interface require -target:jvm-1.8

[Yunhui Han]

Hi, all

I want to upgrade my flink to 1.12.0. I used the new API for watermark.

I got an error when I compiled my jar.

My pom file content is this.

My JDK version is this.

Can anyone help me with this? 

Sincerely

[Chesnay Schepler]

You have to configure the scala-maven-plugin to compile to java 8.

Add this to the configuration of the plugin:

<arg>-target:jvm-${target.java.version}</arg>

On 2/3/2021 10:12 AM, Yunhui Han wrote:

Hi, all

I want to upgrade my flink to 1.12.0. I used the new API for watermark.

I got an error when I compiled my jar.

My pom file content is this.

My JDK version is this.

Can anyone help me with this? 

Sincerely

[Yunhui Han]

Thanks,  Chesnay Schepler.

Could you please show me an example of scala-maven-plugin configuration?

On Wed, Feb 3, 2021 at 5:26 PM Chesnay Schepler <[hidden email]> wrote:

You have to configure the scala-maven-plugin to compile to java 8.

Add this to the configuration of the plugin:

<arg>-target:jvm-${target.java.version}</arg>

On 2/3/2021 10:12 AM, Yunhui Han wrote:

Hi, all

I want to upgrade my flink to 1.12.0. I used the new API for watermark.

I got an error when I compiled my jar.

My pom file content is this.

My JDK version is this.

Can anyone help me with this? 

Sincerely

[Yunhui Han]

I solved the problem with the configuration below. Thank you Chesnay Schepler.

<plugin>
    <groupId>net.alchim31.maven</groupId>
    <artifactId>scala-maven-plugin</artifactId>
    <version>3.2.2</version>
    <executions>
        <execution>
            <goals>
                <goal>compile</goal>
                <goal>testCompile</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <args>
            <arg>-target:jvm-${target.java.version}</arg>
        </args>
    </configuration>
</plugin>

On Wed, Feb 3, 2021 at 6:10 PM Yunhui Han <[hidden email]> wrote:

Thanks,  Chesnay Schepler.

Could you please show me an example of scala-maven-plugin configuration?

On Wed, Feb 3, 2021 at 5:26 PM Chesnay Schepler <[hidden email]> wrote:

You have to configure the scala-maven-plugin to compile to java 8.

Add this to the configuration of the plugin:

<arg>-target:jvm-${target.java.version}</arg>

On 2/3/2021 10:12 AM, Yunhui Han wrote:

Hi, all

I want to upgrade my flink to 1.12.0. I used the new API for watermark.

I got an error when I compiled my jar.

My pom file content is this.

My JDK version is this.

Can anyone help me with this? 

Sincerely