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com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)	at com.mysql.jdbc.Util.getInstance(Util.java:387)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:917)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:896)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:885)	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2330)	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2083)	at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:806)	at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)	at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)	at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:410)	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:328)	at java.sql.DriverManager.getConnection(DriverManager.java:571)	at java.sql.DriverManager.getConnection(DriverManager.java:215)	at it.noovle.testsql.HelloAppEngine.testSql(HelloAppEngine.java:54)