How can I find maven property names for libraries? -


i have these properties defined in pom.xml -

<properties>     <project.build.sourceencoding>utf-8</project.build.sourceencoding>     <powermock.version>1.6.2</powermock.version>     <maven.compiler.source>1.8</maven.compiler.source>     <maven.compiler.target>1.8</maven.compiler.target>     <spring.artifact.version>4.1.7.release</spring.artifact.version>     <logback.version>1.1.6</logback.version> </properties>

i trying understand these properties names defined - powermock.version, logback.version? how know version of ch.qos.logback.core library determined logback.version property? looked information quite bit , found there many known properties maven.compiler.source , maven.compiler.target nothing explains version ones.

maven properties value placeholder, properties in ant. values accessible anywhere within pom using notation ${x}, x property.

your current usage 5th style mentioned in above link

x: set within element in pom. value of value may used ${somevar}.

its effectiveness comes act when want use same variable multiple artifacts might or might not part of same groupid.

for example - 

<properties>     <spring.version>3.1.2.release</spring.version> </properties>

you can further define dependency using same property -

<dependency>     <groupid>org.springframework</groupid>     <artifactid>spring-core</artifactid>     <version>${spring.version}</version> <!-- version fetched properties--> </dependency>  <dependency>     <groupid>org.springframework</groupid>     <artifactid>spring-context</artifactid>     <version>${spring.version}</version> <!-- version fetched properties--> </dependency>

which similar 

<version>3.1.2</version>

ensuring both artifacts on same version well.


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