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Steps to create (or write to) a sequential access file: Create a handle to the file by passing the name of the file to a File object: ... Establish the stream that PrintWriter will use: ... Establish a try ... ... Attach the stream to the file: ... Write data to the file through the stream: ... Close the file:

If a sequential file is used and the file is holding some records, then the existing records will be deleted first and then new records will be inserted in the file. It will not happen so in case of an indexed file or a relative file. Extend mode is used to append records in a sequential file.

Records in sequential files can be read or written only sequentially. After you place a record into a sequential file, you cannot shorten, lengthen, or delete the record. However, you can update ( REWRITE ) a record if the length does not change. New records are added at the end of the file.

Add records sequentially by using multiple WRITE statements, close the file, and then open it again with ORGANIZATION= ' SEQUENTIAL ' and ACCESS= ' SEQUENTIAL ' (or ACCESS= ' DIRECT ' if the sequential file has fixed-length records).

Adding records sequentially: To add records sequentially to the end of a file that has been opened with either OUTPUT or EXTEND , use ACCESS IS SEQUENTIAL and code the WRITE statement. Sequential and line-sequential files are always written sequentially.

Extend mode is used to append records in a sequential file. In this mode, records are inserted at the end. If file access mode is Random or Dynamic, then extend mode cannot be used. Input-Output mode is used to read and rewrite the records of a file.

Steps to create (or write to) a sequential access file: Create a handle to the file by passing the name of the file to a File object: ... Establish the stream that PrintWriter will use: ... Establish a try ... ... Attach the stream to the file: ... Write data to the file through the stream: ... Close the file: