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    This is a bug that happens in Slide in versions 4.2.0 and before. Update to 4.2.2 or further to fix it.

java.net.UnknownHostException: localhost3306	at java.net.InetAddress.getAllByName0(InetAddress.java:1215)	at java.net.InetAddress.getAllByName(InetAddress.java:1127)	at java.net.InetAddress.getAllByName(InetAddress.java:1063)	at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:163)	at com.mysql.jdbc.MysqlIO.(MysqlIO.java:267)	at com.mysql.jdbc.Connection.createNewIO(Connection.java:2739)	at com.mysql.jdbc.Connection.(Connection.java:1553)	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)	at java.sql.DriverManager.getConnection(DriverManager.java:579)	at java.sql.DriverManager.getConnection(DriverManager.java:190)	at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:133)	at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)	at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)	at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:160)	at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:81)	at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1472)	at SudentTest.main(SudentTest.java:15)