Sorry, please.

org.firebirdsql.jdbc.FBSQLException: Resource Exception. Unable to
complete network request to host "embedded".
Reason: Unable to complete network request to host "embedded".
at org.firebirdsql.jdbc.FBDataSource.getConnection
(FBDataSource.java:107)
at org.firebirdsql.jdbc.FBDriver.connect(FBDriver.java:275)
at java.sql.DriverManager.getConnection
(DriverManager.java:512)
at java.sql.DriverManager.getConnection
(DriverManager.java:171)
at br.com.javafree.testePosgresDAO.main
(testePosgresDAO.java:40)
at org.firebirdsql.gds.GDSException: Unable to complete network
request to host "embedded".
at org.firebirdsql.jgds.GDS_Impl.connect(GDS_Impl.java:1536)
at org.firebirdsql.jgds.GDS_Impl.isc_attach_database
(GDS_Impl.java:276)
at org.firebirdsql.jgds.GDS_Impl.isc_attach_database
(GDS_Impl.java:252)
at
org.firebirdsql.jca.FBManagedConnectionFactory.createDbHandle
(FBManagedConnectionFactory.java:543)
at org.firebirdsql.jca.FBManagedConnection.<init>
(FBManagedConnection.java:109)
at
org.firebirdsql.jca.FBManagedConnectionFactory.createManagedConnection
(FBManagedConnectionFactory.java:374)
at
org.firebirdsql.jca.FBStandAloneConnectionManager.allocateConnection
(FBStandAloneConnectionManager.java:61)
at org.firebirdsql.jdbc.FBDataSource.getConnection
(FBDataSource.java:104)
at org.firebirdsql.jdbc.FBDriver.connect(FBDriver.java:275)
at java.sql.DriverManager.getConnection
(DriverManager.java:512)
at java.sql.DriverManager.getConnection
(DriverManager.java:171)
at br.com.javafree.testePosgresDAO.main
(testePosgresDAO.java:40)