How to write data with FileOutputStream without losing old data?
If you work with FileOutputStream methods, each time you write your file through this methods you've been lost your old data. Is it possible to write file without losing your old data via FileOutputStream?
java fileoutputstream
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
asked Dec 17 '11 at 12:33
iSuniSun
92152145
add a comment |
If you work with FileOutputStream methods, each time you write your file through this methods you've been lost your old data. Is it possible to write file without losing your old data via FileOutputStream?
java fileoutputstream
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
asked Dec 17 '11 at 12:33
iSuniSun
92152145
1
If you are wondering how you could have worked this out for yourself, you could have read the Javadoc. docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html
– Peter Lawrey
Dec 17 '11 at 16:21
[OutputStreamWriter is used instead of FileOutputStream][1] [1]: stackoverflow.com/questions/23320070/…
– sourabh
Apr 27 '14 at 10:41
1
@PeterLawrey to learn by ourself, one usually simply ask internet. And SO is the 1st result before the java doc :-)
– Juh_
Dec 30 '17 at 22:12
add a comment |
If you work with FileOutputStream methods, each time you write your file through this methods you've been lost your old data. Is it possible to write file without losing your old data via FileOutputStream?
java fileoutputstream
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
asked Dec 17 '11 at 12:33
iSuniSun
92152145
If you work with FileOutputStream methods, each time you write your file through this methods you've been lost your old data. Is it possible to write file without losing your old data via FileOutputStream?
java fileoutputstream
java fileoutputstream
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
asked Dec 17 '11 at 12:33
iSuniSun
92152145
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
asked Dec 17 '11 at 12:33
iSuniSun
92152145
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
edited Dec 17 '11 at 12:39
BalusC
857k30031733237
857k30031733237
asked Dec 17 '11 at 12:33
iSuniSun
92152145
asked Dec 17 '11 at 12:33
iSuniSun
92152145
asked Dec 17 '11 at 12:33
iSuniSun
92152145
92152145
1
If you are wondering how you could have worked this out for yourself, you could have read the Javadoc. docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html
– Peter Lawrey
Dec 17 '11 at 16:21
[OutputStreamWriter is used instead of FileOutputStream][1] [1]: stackoverflow.com/questions/23320070/…
– sourabh
Apr 27 '14 at 10:41
1
@PeterLawrey to learn by ourself, one usually simply ask internet. And SO is the 1st result before the java doc :-)
– Juh_
Dec 30 '17 at 22:12
add a comment |
1
If you are wondering how you could have worked this out for yourself, you could have read the Javadoc. docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html
– Peter Lawrey
Dec 17 '11 at 16:21
[OutputStreamWriter is used instead of FileOutputStream][1] [1]: stackoverflow.com/questions/23320070/…
– sourabh
Apr 27 '14 at 10:41
1
@PeterLawrey to learn by ourself, one usually simply ask internet. And SO is the 1st result before the java doc :-)
– Juh_
Dec 30 '17 at 22:12
1
1
If you are wondering how you could have worked this out for yourself, you could have read the Javadoc. docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html
– Peter Lawrey
Dec 17 '11 at 16:21
If you are wondering how you could have worked this out for yourself, you could have read the Javadoc. docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html
– Peter Lawrey
Dec 17 '11 at 16:21
[OutputStreamWriter is used instead of FileOutputStream][1] [1]: stackoverflow.com/questions/23320070/…
– sourabh
Apr 27 '14 at 10:41
[OutputStreamWriter is used instead of FileOutputStream][1] [1]: stackoverflow.com/questions/23320070/…
– sourabh
Apr 27 '14 at 10:41
1
1
@PeterLawrey to learn by ourself, one usually simply ask internet. And SO is the 1st result before the java doc :-)
– Juh_
Dec 30 '17 at 22:12
@PeterLawrey to learn by ourself, one usually simply ask internet. And SO is the 1st result before the java doc :-)
– Juh_
Dec 30 '17 at 22:12
add a comment |
2 Answers
2
active
oldest
votes
Use the constructor that takes a File and a boolean
FileOutputStream(File file, boolean append)
and set the boolean to true. That way, the data you write will be appended to the end of the file, rather than overwriting what was already there.
answered Dec 17 '11 at 12:36
MatMat
167k29320348
add a comment |
Use the constructor for appending material to the file:
FileOutputStream(File file, boolean append)
Creates a file output stream to write to the file represented by the specified File object.
So to append to a file say "abc.txt" use
FileOutputStream fos=new FileOutputStream(new File("abc.txt"),true);
answered Dec 17 '11 at 12:37
o_oo_o
47129
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Use the constructor that takes a File and a boolean
FileOutputStream(File file, boolean append)
and set the boolean to true. That way, the data you write will be appended to the end of the file, rather than overwriting what was already there.
answered Dec 17 '11 at 12:36
MatMat
167k29320348
add a comment |
Use the constructor that takes a File and a boolean
FileOutputStream(File file, boolean append)
and set the boolean to true. That way, the data you write will be appended to the end of the file, rather than overwriting what was already there.
answered Dec 17 '11 at 12:36
MatMat
167k29320348
add a comment |
Use the constructor that takes a File and a boolean
FileOutputStream(File file, boolean append)
and set the boolean to true. That way, the data you write will be appended to the end of the file, rather than overwriting what was already there.
answered Dec 17 '11 at 12:36
MatMat
167k29320348
Use the constructor that takes a File and a boolean
FileOutputStream(File file, boolean append)
and set the boolean to true. That way, the data you write will be appended to the end of the file, rather than overwriting what was already there.
answered Dec 17 '11 at 12:36
MatMat
167k29320348
answered Dec 17 '11 at 12:36
MatMat
167k29320348
answered Dec 17 '11 at 12:36
MatMat
167k29320348
answered Dec 17 '11 at 12:36
MatMat
167k29320348
167k29320348
add a comment |
add a comment |
Use the constructor for appending material to the file:
FileOutputStream(File file, boolean append)
Creates a file output stream to write to the file represented by the specified File object.
So to append to a file say "abc.txt" use
FileOutputStream fos=new FileOutputStream(new File("abc.txt"),true);
answered Dec 17 '11 at 12:37
o_oo_o
47129
add a comment |
Use the constructor for appending material to the file:
FileOutputStream(File file, boolean append)
Creates a file output stream to write to the file represented by the specified File object.
So to append to a file say "abc.txt" use
FileOutputStream fos=new FileOutputStream(new File("abc.txt"),true);
answered Dec 17 '11 at 12:37
o_oo_o
47129
add a comment |
Use the constructor for appending material to the file:
FileOutputStream(File file, boolean append)
Creates a file output stream to write to the file represented by the specified File object.
So to append to a file say "abc.txt" use
FileOutputStream fos=new FileOutputStream(new File("abc.txt"),true);
answered Dec 17 '11 at 12:37
o_oo_o
47129
Use the constructor for appending material to the file:
FileOutputStream(File file, boolean append)
Creates a file output stream to write to the file represented by the specified File object.
So to append to a file say "abc.txt" use
FileOutputStream fos=new FileOutputStream(new File("abc.txt"),true);
answered Dec 17 '11 at 12:37
o_oo_o
47129
answered Dec 17 '11 at 12:37
o_oo_o
47129
answered Dec 17 '11 at 12:37
o_oo_o
47129
answered Dec 17 '11 at 12:37
o_oo_o
47129
47129
add a comment |
add a comment |
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1
If you are wondering how you could have worked this out for yourself, you could have read the Javadoc. docs.oracle.com/javase/7/docs/api/java/io/FileOutputStream.html
– Peter Lawrey
Dec 17 '11 at 16:21
[OutputStreamWriter is used instead of FileOutputStream][1] [1]: stackoverflow.com/questions/23320070/…
– sourabh
Apr 27 '14 at 10:41
1
@PeterLawrey to learn by ourself, one usually simply ask internet. And SO is the 1st result before the java doc :-)
– Juh_
Dec 30 '17 at 22:12