4.0.0 com.baeldung java-websocket war 0.0.1-SNAPSHOT java-websocket Maven Webapp http://maven.apache.org UTF-8 com.baeldung parent-modules 1.0.0-SNAPSHOT javax.websocket javax.websocket-api 1.1 provided com.google.code.gson gson 2.8.0 org.apache.maven.plugins maven-compiler-plugin 3.5.1 1.8 1.8