StandardOpenOption Enums

Question 1

How are StandardOpenOption Enums used?

Answer 1

With input/outputStream Readers.
OutputStream out = Files.newOutputStream(tmp, StandardOpenOption.DELETE_ON_CLOSE);

Question 2

If the file is opened for WRITE access then bytes will be written to the end of the file rather than the beginning is controlled using which Enum?

Answer 2

APPEND

Question 3

Create a new file if it does not exist?

Answer 3

CREATE

Question 4

Create a new file, failing if the file already exists.

Answer 4

CREATE_NEW

Question 5

Delete on close.

Answer 5

DELETE_ON_CLOSE

Question 6

Requires that every update to the file’s content be written synchronously to the underlying storage device.

Answer 6

DSYNC

Question 7

Open for read access.

Answer 7

READ

Question 8

When used with the CREATE_NEW option then this option provides a hint that the new file will be sparse. The option is ignored when the file system does not support the creation of sparse files.

Answer 8

SPARSE

Question 9

Requires that every update to the file’s content or metadata be written synchronously to the underlying storage device.

Answer 9

SYNC

Question 10

If the file already exists and it is opened for WRITE access, then its length is truncated to 0.

Answer 10

TRUNCATE_EXISTING

Question 11

Open for write access.

Answer 11

WRITE

Question 12

Write

Answer 12

Open for write access.

Question 13

TRUNCATE_EXISTING

Answer 13

If the file already exists and it is opened for WRITE access, then its length is truncated to 0.

Question 14

SYNC

Answer 14

Requires that every update to the file’s content or metadata be written synchronously to the underlying storage device.

Question 15

SPARSE

Answer 15

When used with the CREATE_NEW option then this option provides a hint that the new file will be sparse. The option is ignored when the file system does not support the creation of sparse files.

Question 16

READ

Answer 16

Open for read access.

Question 17

DSYNC

Answer 17

Requires that every update to the file’s content be written synchronously to the underlying storage device.

Question 18

DELETE_ON_CLOSE

Answer 18

Delete on close.

Question 19

CREATE_NEW

Answer 19

Create a new file, failing if the file already exists.

Question 20

CREATE

Answer 20

Create a new file if it does not exist.

Question 21

APPEND

Answer 21

If the file is opened for WRITE access then bytes will be written to the end of the file rather than the beginning.