Ao utilizar o comando :

java -jar cdcreact-1.0.0-SNAPSHOT.jar

Eu acabo obtendo o seguinte erro:

Wed Feb 06 15:50:04 BRT 2019 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
2019-02-06 15:50:05.063 ERROR 10832 --- [           main] o.a.tomcat.jdbc.pool.ConnectionPool      : Unable to create initial connections of pool.

java.sql.SQLException: Access denied for user 'root'@'localhost'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:871) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1694) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1215) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2255) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2286) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2085) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:795) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:44) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_201]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_201]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_201]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_201]
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:404) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:327) ~[mysql-connector-java-5.1.38.jar!/:5.1.38]
    at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:307) ~[tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:200) ~[tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:708) [tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:642) [tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:464) [tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:141) [tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:115) [tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.DataSourceProxy.createPool(DataSourceProxy.java:102) [tomcat-jdbc-8.0.30.jar!/:na]
    at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:126) [tomcat-jdbc-8.0.30.jar!/:na]
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:139) [hibernate-core-4.3.11.Final.jar!/:4.3.11.Final]
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcServicesImpl.java:279) [hibernate-core-4.3.11.Final.jar!/:4.3.11.Final]
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:124) [hibernate-core-4.3.11.Final.jar!/:4.3.11.Final]
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111) [hibernate-core-4.3.11.Final.jar!/:4.3.11.Final]

Gostaria de saber como resolver esse problema pois não posso completar o curso sem resolvê-lo. Agradeço desde já.