Gatling.java

import io.gatling.core.Predef;
import io.gatling.core.scenario.Simulation;
import io.gatling.core.structure.ScenarioBuilder;
import io.gatling.http.Predef;
import io.gatling.http.protocol.HttpProtocolBuilder;

public class SimpleLoadTest extends Simulation {

        HttpProtocolBuilder httpConf = Predef.http().baseUrl("http://localhost:8080")
                .acceptHeader("application/json");

        ScenarioBuilder scn = Predef.scenario("Simple Load Test")
                .exec(Predef.http("request_1")
                        .get("/api/endpoint")
                        .check(Predef.status().is(200))
                        .check(Predef.jsonPath("$.key").is("value"))
                );

     {
        Predef.setUp(
                scn.inject(Predef.constantUsersPerSec(10).during(10))
                .protocols(httpConf)
        );
    }
}