Mixing
ImageIO.read returns NULL, with no errors
The following code seems not to work, even though the file appears to be found just fine.
images = new BufferedImage[32];
FileInputStream fis = null;
for (int i = 0; i < 32; i++) {
File file = new File("tiles\"+i+".bmp");
if (!file.exists()){
System.out.println("File "+i+" failed");
}
try {
fis = new FileInputStream(file);
} catch (FileNotFoundException e) {
System.err.println(e + "" + i);
}
try {
images[i] = ImageIO.read(fis);
} catch (IOException e) {
System.err.println(e + "" + i);
}
if (images[i] == null) {
System.out.println("Image "+i+" failed");
}
}
Thanks in advance for any help.
Edit: The result is me attempting to Graphics.drawImage(images[0]);, and it giving me a null pointer exception. This code here completes fine.
Edit: Changed moved the if(!file.exists()) as suggested, and wrapped the file in an input stream.
java image
edited Apr 23 '13 at 10:41
d.raev
5,60163866
asked Mar 30 '12 at 13:29
Naberius
100117
add a comment |
The following code seems not to work, even though the file appears to be found just fine.
images = new BufferedImage[32];
FileInputStream fis = null;
for (int i = 0; i < 32; i++) {
File file = new File("tiles\"+i+".bmp");
if (!file.exists()){
System.out.println("File "+i+" failed");
}
try {
fis = new FileInputStream(file);
} catch (FileNotFoundException e) {
System.err.println(e + "" + i);
}
try {
images[i] = ImageIO.read(fis);
} catch (IOException e) {
System.err.println(e + "" + i);
}
if (images[i] == null) {
System.out.println("Image "+i+" failed");
}
}
Thanks in advance for any help.
Edit: The result is me attempting to Graphics.drawImage(images[0]);, and it giving me a null pointer exception. This code here completes fine.
Edit: Changed moved the if(!file.exists()) as suggested, and wrapped the file in an input stream.
java image
edited Apr 23 '13 at 10:41
d.raev
5,60163866
asked Mar 30 '12 at 13:29
Naberius
100117
3
RTFM
– mre
Mar 30 '12 at 13:34
Could you describe the result? A wild guess: the path in incorrect...
– Alexis Dufrenoy
Mar 30 '12 at 13:36
Why don'y you put your test if (!file.exists()) System.out.println("File "+i+" failed"); before the read?
– Alexis Dufrenoy
Mar 30 '12 at 13:38
add a comment |
The following code seems not to work, even though the file appears to be found just fine.
images = new BufferedImage[32];
FileInputStream fis = null;
for (int i = 0; i < 32; i++) {
File file = new File("tiles\"+i+".bmp");
if (!file.exists()){
System.out.println("File "+i+" failed");
}
try {
fis = new FileInputStream(file);
} catch (FileNotFoundException e) {
System.err.println(e + "" + i);
}
try {
images[i] = ImageIO.read(fis);
} catch (IOException e) {
System.err.println(e + "" + i);
}
if (images[i] == null) {
System.out.println("Image "+i+" failed");
}
}
Thanks in advance for any help.
Edit: The result is me attempting to Graphics.drawImage(images[0]);, and it giving me a null pointer exception. This code here completes fine.
Edit: Changed moved the if(!file.exists()) as suggested, and wrapped the file in an input stream.
java image
edited Apr 23 '13 at 10:41
d.raev
5,60163866
asked Mar 30 '12 at 13:29
Naberius
100117
The following code seems not to work, even though the file appears to be found just fine.
images = new BufferedImage[32];
FileInputStream fis = null;
for (int i = 0; i < 32; i++) {
File file = new File("tiles\"+i+".bmp");
if (!file.exists()){
System.out.println("File "+i+" failed");
}
try {
fis = new FileInputStream(file);
} catch (FileNotFoundException e) {
System.err.println(e + "" + i);
}
try {
images[i] = ImageIO.read(fis);
} catch (IOException e) {
System.err.println(e + "" + i);
}
if (images[i] == null) {
System.out.println("Image "+i+" failed");
}
}
Thanks in advance for any help.
Edit: The result is me attempting to Graphics.drawImage(images[0]);, and it giving me a null pointer exception. This code here completes fine.
Edit: Changed moved the if(!file.exists()) as suggested, and wrapped the file in an input stream.
java image
java image
edited Apr 23 '13 at 10:41
d.raev
5,60163866
asked Mar 30 '12 at 13:29
Naberius
100117
edited Apr 23 '13 at 10:41
d.raev
5,60163866
asked Mar 30 '12 at 13:29
Naberius
100117
edited Apr 23 '13 at 10:41
d.raev
5,60163866
edited Apr 23 '13 at 10:41
d.raev
5,60163866
edited Apr 23 '13 at 10:41
d.raev
5,60163866
5,60163866
asked Mar 30 '12 at 13:29
Naberius
100117
asked Mar 30 '12 at 13:29
Naberius
100117
asked Mar 30 '12 at 13:29
Naberius
100117
100117
3
RTFM
– mre
Mar 30 '12 at 13:34
Could you describe the result? A wild guess: the path in incorrect...
– Alexis Dufrenoy
Mar 30 '12 at 13:36
Why don'y you put your test if (!file.exists()) System.out.println("File "+i+" failed"); before the read?
– Alexis Dufrenoy
Mar 30 '12 at 13:38
add a comment |
3
RTFM
– mre
Mar 30 '12 at 13:34
Could you describe the result? A wild guess: the path in incorrect...
– Alexis Dufrenoy
Mar 30 '12 at 13:36
Why don'y you put your test if (!file.exists()) System.out.println("File "+i+" failed"); before the read?
– Alexis Dufrenoy
Mar 30 '12 at 13:38
3
3
RTFM
– mre
Mar 30 '12 at 13:34
RTFM
– mre
Mar 30 '12 at 13:34
Could you describe the result? A wild guess: the path in incorrect...
– Alexis Dufrenoy
Mar 30 '12 at 13:36
Could you describe the result? A wild guess: the path in incorrect...
– Alexis Dufrenoy
Mar 30 '12 at 13:36
Why don'y you put your test if (!file.exists()) System.out.println("File "+i+" failed"); before the read?
– Alexis Dufrenoy
Mar 30 '12 at 13:38
Why don'y you put your test if (!file.exists()) System.out.println("File "+i+" failed"); before the read?
– Alexis Dufrenoy
Mar 30 '12 at 13:38
add a comment |
3 Answers
3
active
oldest
votes
ImageIO.read(file); will return null if no registered ImageReader is not found. Please check whether you have registered any ImageReader or not.
I think this code snippet could help you
File file = new File("bear.jpg"); // I have bear.jpg in my working directory
FileInputStream fis = new FileInputStream(file);
BufferedImage image = ImageIO.read(fis); //reading the image file
You just need to wrap the file into an FileInputStream and then pass it to read()
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
I'm probably still not doing this properly, but what I did do was unsuccessful. I changed the code above to show what was changed.
– Naberius
Mar 30 '12 at 13:59
Can you say what are your image file names in the disk?
– Chandra Sekhar
Mar 30 '12 at 14:07
@Naberius Can you say what are your image file names in the disk? It is perfectly working in my case.
– Chandra Sekhar
Mar 30 '12 at 14:16
Sorry, no weekend internet access. The files are named 0.bmp, 1.bmp, up to 31. They're also stored in a folder called "tiles", but nothing changes by taking them out of said folder.
– Naberius
Apr 2 '12 at 13:12
@Naberius Then try using File file = new File("tiles"+i+".bmp"); this.
– Chandra Sekhar
Apr 2 '12 at 13:20
|
show 1 more comment
ImageIO.read(*...) will only load these image types GIF, PNG, JPEG, BMP, and WBMP.
Any other image type will return null without error.
reference:
http://docs.oracle.com/javase/tutorial/2d/images/loadimage.html
I do realize this is not a solution to the specific original problem but it is a solution to the question asked.
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
add a comment |
Try wrap you InputStream into BufferedInputStream:
fis = new FileInputStream(file); ==>
new BufferedInputStream(new FileInputStream(file));
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
ImageIO.read(file); will return null if no registered ImageReader is not found. Please check whether you have registered any ImageReader or not.
I think this code snippet could help you
File file = new File("bear.jpg"); // I have bear.jpg in my working directory
FileInputStream fis = new FileInputStream(file);
BufferedImage image = ImageIO.read(fis); //reading the image file
You just need to wrap the file into an FileInputStream and then pass it to read()
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
I'm probably still not doing this properly, but what I did do was unsuccessful. I changed the code above to show what was changed.
– Naberius
Mar 30 '12 at 13:59
Can you say what are your image file names in the disk?
– Chandra Sekhar
Mar 30 '12 at 14:07
@Naberius Can you say what are your image file names in the disk? It is perfectly working in my case.
– Chandra Sekhar
Mar 30 '12 at 14:16
Sorry, no weekend internet access. The files are named 0.bmp, 1.bmp, up to 31. They're also stored in a folder called "tiles", but nothing changes by taking them out of said folder.
– Naberius
Apr 2 '12 at 13:12
@Naberius Then try using File file = new File("tiles"+i+".bmp"); this.
– Chandra Sekhar
Apr 2 '12 at 13:20
|
show 1 more comment
ImageIO.read(file); will return null if no registered ImageReader is not found. Please check whether you have registered any ImageReader or not.
I think this code snippet could help you
File file = new File("bear.jpg"); // I have bear.jpg in my working directory
FileInputStream fis = new FileInputStream(file);
BufferedImage image = ImageIO.read(fis); //reading the image file
You just need to wrap the file into an FileInputStream and then pass it to read()
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
I'm probably still not doing this properly, but what I did do was unsuccessful. I changed the code above to show what was changed.
– Naberius
Mar 30 '12 at 13:59
Can you say what are your image file names in the disk?
– Chandra Sekhar
Mar 30 '12 at 14:07
@Naberius Can you say what are your image file names in the disk? It is perfectly working in my case.
– Chandra Sekhar
Mar 30 '12 at 14:16
Sorry, no weekend internet access. The files are named 0.bmp, 1.bmp, up to 31. They're also stored in a folder called "tiles", but nothing changes by taking them out of said folder.
– Naberius
Apr 2 '12 at 13:12
@Naberius Then try using File file = new File("tiles"+i+".bmp"); this.
– Chandra Sekhar
Apr 2 '12 at 13:20
|
show 1 more comment
ImageIO.read(file); will return null if no registered ImageReader is not found. Please check whether you have registered any ImageReader or not.
I think this code snippet could help you
File file = new File("bear.jpg"); // I have bear.jpg in my working directory
FileInputStream fis = new FileInputStream(file);
BufferedImage image = ImageIO.read(fis); //reading the image file
You just need to wrap the file into an FileInputStream and then pass it to read()
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
ImageIO.read(file); will return null if no registered ImageReader is not found. Please check whether you have registered any ImageReader or not.
I think this code snippet could help you
File file = new File("bear.jpg"); // I have bear.jpg in my working directory
FileInputStream fis = new FileInputStream(file);
BufferedImage image = ImageIO.read(fis); //reading the image file
You just need to wrap the file into an FileInputStream and then pass it to read()
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
answered Mar 30 '12 at 13:34
Chandra Sekhar
12k125692
12k125692
I'm probably still not doing this properly, but what I did do was unsuccessful. I changed the code above to show what was changed.
– Naberius
Mar 30 '12 at 13:59
Can you say what are your image file names in the disk?
– Chandra Sekhar
Mar 30 '12 at 14:07
@Naberius Can you say what are your image file names in the disk? It is perfectly working in my case.
– Chandra Sekhar
Mar 30 '12 at 14:16
Sorry, no weekend internet access. The files are named 0.bmp, 1.bmp, up to 31. They're also stored in a folder called "tiles", but nothing changes by taking them out of said folder.
– Naberius
Apr 2 '12 at 13:12
@Naberius Then try using File file = new File("tiles"+i+".bmp"); this.
– Chandra Sekhar
Apr 2 '12 at 13:20
|
show 1 more comment
I'm probably still not doing this properly, but what I did do was unsuccessful. I changed the code above to show what was changed.
– Naberius
Mar 30 '12 at 13:59
Can you say what are your image file names in the disk?
– Chandra Sekhar
Mar 30 '12 at 14:07
@Naberius Can you say what are your image file names in the disk? It is perfectly working in my case.
– Chandra Sekhar
Mar 30 '12 at 14:16
Sorry, no weekend internet access. The files are named 0.bmp, 1.bmp, up to 31. They're also stored in a folder called "tiles", but nothing changes by taking them out of said folder.
– Naberius
Apr 2 '12 at 13:12
@Naberius Then try using File file = new File("tiles"+i+".bmp"); this.
– Chandra Sekhar
Apr 2 '12 at 13:20
I'm probably still not doing this properly, but what I did do was unsuccessful. I changed the code above to show what was changed.
– Naberius
Mar 30 '12 at 13:59
I'm probably still not doing this properly, but what I did do was unsuccessful. I changed the code above to show what was changed.
– Naberius
Mar 30 '12 at 13:59
Can you say what are your image file names in the disk?
– Chandra Sekhar
Mar 30 '12 at 14:07
Can you say what are your image file names in the disk?
– Chandra Sekhar
Mar 30 '12 at 14:07
@Naberius Can you say what are your image file names in the disk? It is perfectly working in my case.
– Chandra Sekhar
Mar 30 '12 at 14:16
@Naberius Can you say what are your image file names in the disk? It is perfectly working in my case.
– Chandra Sekhar
Mar 30 '12 at 14:16
Sorry, no weekend internet access. The files are named 0.bmp, 1.bmp, up to 31. They're also stored in a folder called "tiles", but nothing changes by taking them out of said folder.
– Naberius
Apr 2 '12 at 13:12
Sorry, no weekend internet access. The files are named 0.bmp, 1.bmp, up to 31. They're also stored in a folder called "tiles", but nothing changes by taking them out of said folder.
– Naberius
Apr 2 '12 at 13:12
@Naberius Then try using File file = new File("tiles"+i+".bmp"); this.
– Chandra Sekhar
Apr 2 '12 at 13:20
@Naberius Then try using File file = new File("tiles"+i+".bmp"); this.
– Chandra Sekhar
Apr 2 '12 at 13:20
|
show 1 more comment
ImageIO.read(*...) will only load these image types GIF, PNG, JPEG, BMP, and WBMP.
Any other image type will return null without error.
reference:
http://docs.oracle.com/javase/tutorial/2d/images/loadimage.html
I do realize this is not a solution to the specific original problem but it is a solution to the question asked.
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
add a comment |
ImageIO.read(*...) will only load these image types GIF, PNG, JPEG, BMP, and WBMP.
Any other image type will return null without error.
reference:
http://docs.oracle.com/javase/tutorial/2d/images/loadimage.html
I do realize this is not a solution to the specific original problem but it is a solution to the question asked.
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
add a comment |
ImageIO.read(*...) will only load these image types GIF, PNG, JPEG, BMP, and WBMP.
Any other image type will return null without error.
reference:
http://docs.oracle.com/javase/tutorial/2d/images/loadimage.html
I do realize this is not a solution to the specific original problem but it is a solution to the question asked.
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
ImageIO.read(*...) will only load these image types GIF, PNG, JPEG, BMP, and WBMP.
Any other image type will return null without error.
reference:
http://docs.oracle.com/javase/tutorial/2d/images/loadimage.html
I do realize this is not a solution to the specific original problem but it is a solution to the question asked.
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
answered Mar 31 '13 at 4:18
Irrationalkilla
41345
41345
add a comment |
add a comment |
Try wrap you InputStream into BufferedInputStream:
fis = new FileInputStream(file); ==>
new BufferedInputStream(new FileInputStream(file));
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
add a comment |
Try wrap you InputStream into BufferedInputStream:
fis = new FileInputStream(file); ==>
new BufferedInputStream(new FileInputStream(file));
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
add a comment |
Try wrap you InputStream into BufferedInputStream:
fis = new FileInputStream(file); ==>
new BufferedInputStream(new FileInputStream(file));
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
Try wrap you InputStream into BufferedInputStream:
fis = new FileInputStream(file); ==>
new BufferedInputStream(new FileInputStream(file));
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
answered Oct 14 '14 at 13:40
Ahmed MANSOUR
1,18111425
1,18111425
add a comment |
add a comment |
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3
RTFM
– mre
Mar 30 '12 at 13:34
Could you describe the result? A wild guess: the path in incorrect...
– Alexis Dufrenoy
Mar 30 '12 at 13:36
Why don'y you put your test if (!file.exists()) System.out.println("File "+i+" failed"); before the read?
– Alexis Dufrenoy
Mar 30 '12 at 13:38