CallableStatement cstmt = conn.prepareCall("{call my_procedure(?,?)}"); //creating a CallableStatement object cstmt.setInt(1, 10); //setting input parameter cstmt.registerOutParameter(2, java.sql.Types.BOOLEAN); //registering output parameter as boolean cstmt.execute(); //executing stored procedure boolean result = cstmt.getBoolean(2); //retrieving boolean output parameter System.out.println(result); //displaying outputIn this example, we are calling a stored procedure "my_procedure" which takes an input parameter of type int and returns a boolean output value. We set the input parameter to 10 and register the output parameter as boolean. After executing the stored procedure, we retrieve the output parameter value using the getBoolean() method and display it on the console. The package library for java.sql is java.sql.*.