Getting Started¶

Requirements:

Instancio is packaged as a multi-release JAR and can be used with Java 8 or higher.

It has a single compile dependency on org.slf4j:slf4j-api.

Since version 1.5.0 Instancio supports creating:

• java.lang.Record classes on Java 16
• sealed classes on Java 17

Dependencies¶

The following dependencies are available from Maven central:

instancio-junit¶

If you have JUnit 5 on the classpath, then use instancio-junit.

It includes a transitive dependency on instancio-core, therefore it is not necessary to import both.

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<dependency>
    <groupId>org.instancio</groupId>
    <artifactId>instancio-junit</artifactId>
    <version>5.2.1</version>
    <scope>test</scope>
</dependency>

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dependencies {
    testImplementation 'org.instancio:instancio-junit:5.2.1'
}

instancio-core¶

If you use JUnit 4, TestNG, or would like to use Instancio standalone, then use instancio-core:

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<dependency>
    <groupId>org.instancio</groupId>
    <artifactId>instancio-core</artifactId>
    <version>5.2.1</version>
    <scope>test</scope>
</dependency>

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dependencies {
    testImplementation 'org.instancio:instancio-core:5.2.1'
}

instancio-guava¶

Using instancio-guava requires the following dependencies on the classpath:

• either instancio-core or instancio-junit
• com.google.guava:guava version 23.1-jre or higher

Versioning¶

Instancio version numbers adhere to the MAJOR.MINOR.PATCH format.

• Major versions are generally reserved for significant features and breaking changes.
• Minor and Patch versions include bug fixes, smaller new features, but may also include minor breaking changes.

In other words, the project does not follow Semantic Versioning, though the versioning scheme loosely resembles it.