I'm looking for help to insert json data into postgres table using java program. I have tried with following code but cannot find any data is inserted in to the table. I have very little experience in programming. Can some one help me to modify my program to make it work?

here is my code.

```
enter code here  stmt = c.createStatement();
        String sql = "CREATE TABLE jason " +
                "(ID INT      NOT NULL," +
                " NAME           json    NOT NULL)";
        stmt.executeUpdate(sql); //updates the table
       //json data----------------
        String[] MESSAGE = {"{\"customer_name\": \"John\", \"items\": { \"description\": \"milk\", \"quantity\": 4 } }"};

        sql = "INSERT INTO jason (ID,NAME) "
                + "VALUES (1,::MESSAGE );";
        stmt.executeUpdate(sql);

```