mvitz/MyBenchmark.java

## execute.sh
mvn clean package && java -jar target/jmh-abien-json-1.0-SNAPSHOT.jar -f  1

## MyBenchmark.java
package com.innoq;

import java.util.Map;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;

@State(Scope.Benchmark)
public class MyBenchmark {

    private ScriptEngine engine;
    private ObjectMapper mapper;
    private String json;

    @Setup
    public void setUp() throws Exception {
        engine = new ScriptEngineManager().getEngineByName("javascript");
        mapper = new ObjectMapper();
        json = "{ \"foo\": \"bar\", \"bar\": 1 }";
    }

    @Benchmark
    public Object nashorn() throws Exception {
        Map<String, Object> map = (Map<String, Object>) engine.eval("Java.asJSONCompatible(" + json + ")");
        return map.get("foo");
    }

    @Benchmark
    public Object jackson() throws Exception {
        Map<String, Object> map = mapper.readValue(json, Map.class);
        return map.get("foo");
    }

}

## pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.innoq</groupId>
  <artifactId>jmh-abien-json</artifactId>
  <version>1.0-SNAPSHOT</version>

  <properties>
    <encoding>UTF-8</encoding>

    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>

    <jackson.version>2.6.3</jackson.version>
    <jmh.version>1.11.1</jmh.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jackson.version}</version>
    </dependency>
    <dependency>
      <groupId>org.openjdk.jmh</groupId>
      <artifactId>jmh-core</artifactId>
      <version>${jmh.version}</version>
    </dependency>
    <dependency>
      <groupId>org.openjdk.jmh</groupId>
      <artifactId>jmh-generator-annprocess</artifactId>
      <version>${jmh.version}</version>
      <scope>provided</scope>
    </dependency>
  </dependencies>


  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-shade-plugin</artifactId>
        <version>2.2</version>
        <executions>
          <execution>
            <phase>package</phase>
            <goals>
              <goal>shade</goal>
            </goals>
            <configuration>
              <transformers>
                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                  <mainClass>org.openjdk.jmh.Main</mainClass>
                </transformer>
              </transformers>
              <filters>
                <filter>
                  <artifact>*:*</artifact>
                  <excludes>
                    <exclude>META-INF/*.SF</exclude>
                    <exclude>META-INF/*.DSA</exclude>
                    <exclude>META-INF/*.RSA</exclude>
                  </excludes>
                </filter>
              </filters>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

</project>
	package com.innoq;

	import java.util.Map;
	import javax.script.ScriptEngine;
	import javax.script.ScriptEngineManager;

	import com.fasterxml.jackson.databind.ObjectMapper;
	import org.openjdk.jmh.annotations.Benchmark;
	import org.openjdk.jmh.annotations.Scope;
	import org.openjdk.jmh.annotations.Setup;
	import org.openjdk.jmh.annotations.State;

	@State(Scope.Benchmark)
	public class MyBenchmark {

	private ScriptEngine engine;
	private ObjectMapper mapper;
	private String json;

	@Setup
	public void setUp() throws Exception {
	engine = new ScriptEngineManager().getEngineByName("javascript");
	mapper = new ObjectMapper();
	json = "{ \"foo\": \"bar\", \"bar\": 1 }";
	}

	@Benchmark
	public Object nashorn() throws Exception {
	Map<String, Object> map = (Map<String, Object>) engine.eval("Java.asJSONCompatible(" + json + ")");
	return map.get("foo");
	}

	@Benchmark
	public Object jackson() throws Exception {
	Map<String, Object> map = mapper.readValue(json, Map.class);
	return map.get("foo");
	}

	}
	<?xml version="1.0" encoding="UTF-8"?>
	<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>com.innoq</groupId>
	<artifactId>jmh-abien-json</artifactId>
	<version>1.0-SNAPSHOT</version>

	<properties>
	<encoding>UTF-8</encoding>

	<maven.compiler.source>1.8</maven.compiler.source>
	<maven.compiler.target>1.8</maven.compiler.target>

	<jackson.version>2.6.3</jackson.version>
	<jmh.version>1.11.1</jmh.version>
	</properties>

	<dependencies>
	<dependency>
	<groupId>com.fasterxml.jackson.core</groupId>
	<artifactId>jackson-databind</artifactId>
	<version>${jackson.version}</version>
	</dependency>
	<dependency>
	<groupId>org.openjdk.jmh</groupId>
	<artifactId>jmh-core</artifactId>
	<version>${jmh.version}</version>
	</dependency>
	<dependency>
	<groupId>org.openjdk.jmh</groupId>
	<artifactId>jmh-generator-annprocess</artifactId>
	<version>${jmh.version}</version>
	<scope>provided</scope>
	</dependency>
	</dependencies>


	<build>
	<plugins>
	<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-shade-plugin</artifactId>
	<version>2.2</version>
	<executions>
	<execution>
	<phase>package</phase>
	<goals>
	<goal>shade</goal>
	</goals>
	<configuration>
	<transformers>
	<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
	<mainClass>org.openjdk.jmh.Main</mainClass>
	</transformer>
	</transformers>
	<filters>
	<filter>
	<artifact>:</artifact>
	<excludes>
	<exclude>META-INF/*.SF</exclude>
	<exclude>META-INF/*.DSA</exclude>
	<exclude>META-INF/*.RSA</exclude>
	</excludes>
	</filter>
	</filters>
	</configuration>
	</execution>
	</executions>
	</plugin>
	</plugins>
	</build>

	</project>