Copy command from JDBC

Question

Hi all,
I am currently trying to use the copy command to copy data from a text file into a database table using JDBC. In my Java application I am attempting to execute the SQL copy node from 'node.txt' with Delimiter ' '; where node is the name of the table. After the SQL is executed the update count is 0.
However, when I run the same command from the SQL console in pgAdmin (I am using the PostgreSQL database) the command works correctly and as expected. I don't understand what the problem is as the command is the exact same. Has anyone else has this problem or know how to fix it?
Any help would be much appreciated.
Thanks,
Martin

Answer 1

My JDBC code is below:
Thanks.
public void copyTableFrom(
          String tablename,
          String mode,
          String path //the "absolute" path of the file
          String qrystr = "copy " + tablename + " from \'" + path + "\' with Delimiter ' ';";
          this.db.nonQueryCmd(qrystr);
public void nonQueryCmd(String cmd)
          try {
               this.st = conn.createStatement();
               this.closeStatement();
          } catch(SQLException sqle) {
               System.err.println("error occurs when execute " + cmd);
               sqle.printStackTrace();
               this.exit_nicely();
public void exit_nicely()
          this.disconnectDB();
          System.exit(1);
public void disconnectDB()
          try {
               this.conn.close();
          } catch (SQLException e) {
               System.err.println("Closing connection to database " + dbname + " failed");
               e.printStackTrace();
               System.exit(1);
     }