Instale o TensorFlow para Java

<dependency>
  <groupId>org.tensorflow</groupId>
  <artifactId>tensorflow</artifactId>
  <version>2.4.0</version>
</dependency>

<dependency>
  <groupId>org.tensorflow</groupId>
  <artifactId>libtensorflow</artifactId>
  <version>2.4.0</version>
</dependency>
<dependency>
  <groupId>org.tensorflow</groupId>
  <artifactId>libtensorflow_jni_gpu</artifactId>
  <version>2.4.0</version>
</dependency>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.myorg</groupId>
  <artifactId>hellotensorflow</artifactId>
  <version>1.0-SNAPSHOT</version>
  <properties>
    <exec.mainClass>HelloTensorFlow</exec.mainClass>
    <!-- The sample code requires at least JDK 1.7. -->
    <!-- The maven compiler plugin defaults to a lower version -->
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.tensorflow</groupId>
      <artifactId>tensorflow</artifactId>
      <version>1.14.0</version>
    </dependency>
  </dependencies>
</project>

import org.tensorflow.Graph;
import org.tensorflow.Session;
import org.tensorflow.Tensor;
import org.tensorflow.TensorFlow;

public class HelloTensorFlow {
  public static void main(String[] args) throws Exception {
    try (Graph g = new Graph()) {
      final String value = "Hello from " + TensorFlow.version();

      // Construct the computation graph with a single operation, a constant
      // named "MyConst" with a value "value".
      try (Tensor t = Tensor.create(value.getBytes("UTF-8"))) {
        // The Java API doesn't yet include convenience functions for adding operations.
        g.opBuilder("Const", "MyConst").setAttr("dtype", t.dataType()).setAttr("value", t).build();
      }

      // Execute the "MyConst" operation in a Session.
      try (Session s = new Session(g);
          // Generally, there may be multiple output tensors,
          // all of them must be closed to prevent resource leaks.
          Tensor output = s.runner().fetch("MyConst").run().get(0)) {
        System.out.println(new String(output.bytesValue(), "UTF-8"));
      }
    }
  }
}

mvn -q compile exec:java  # Use -q to hide logging

javac -cp libtensorflow-2.4.0.jar HelloTensorFlow.java