Relatorio feito no iReport fecha toda minha aplicação

Statement stm = con.createStatement( );
		
		String query = "select ct.*,cre.*,emp.*,tc.* from controle ct "+
		"inner join credencial cre on ct.numCracha = cre.numCracha "+ 
		"inner join empresa emp on cre.empresa = emp.id "+
		"inner join tipocredencial tc on cre.tipocredencial = tc.id "+
		"order by ct.data";
		ResultSet rs = stm.executeQuery( query );
		JRResultSetDataSource jrRS = new JRResultSetDataSource( rs);
		Map parameters = new HashMap();
		
		
		String jp = JasperFillManager.fillReportToFile(dir+"ControleEntrada.jasper",parameters,jrRS);
		
		JasperViewer.viewReport(jp,false);