Starting with JDK 8u60+ the built-in Nashorn engine is capable to convert Json content into java.util.Map . No external dependencies are required for parsing:

import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; import java.util.Map; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class JSONParsingTest { private ScriptEngine engine; @Before public void initEngine() { ScriptEngineManager sem = new ScriptEngineManager(); this.engine = sem.getEngineByName("javascript"); } @Test public void parseJson() throws IOException, ScriptException { String json = new String(Files.readAllBytes(/*path*/); String script = "Java.asJSONCompatible(" + json + ")"; Object result = this.engine.eval(script); assertThat(result, instanceOf(Map.class)); Map contents = (Map) result; contents.forEach((t, u) -> { //key-value pairs }); } }

Also see official Nashorn extensions documentation.