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I am reading dds textures, but since once built the jar I can't access those textures through url and file and have to use InputStream instead.
So I would need to know how I can obtain a java.nio.ByteBuffer from an java.io.InputStream.
Ps: no matter through 3rd part libraries, I just need it working
983
The IOUtils type has a static method to read an InputStream and return a byte[] . InputStream is; byte[] bytes = IOUtils. toByteArray(is); Internally this creates a ByteArrayOutputStream and copies the bytes to the output, then calls toByteArray() .
Since Java 9, we can use the readAllBytes() method from InputStream class to read all bytes into a byte array. This method reads all bytes from an InputStream object at once and blocks until all remaining bytes have read and end of a stream is detected, or an exception is thrown.
In short, to make a conversion between a ByteBuffer and a byte array you should: Create a byte array and wrap it into a ByteBuffer. The buffer's capacity and limit will be the array's length and its position will be zero. Retrieve the bytes between the current position and the limit of the buffer.
For me the best in this case is Apache commons-io to handle this and similar tasks.
The IOUtils type has a static method to read an InputStream and return a byte[].
InputStream is; byte[] bytes = IOUtils.toByteArray(is); Internally this creates a ByteArrayOutputStream and copies the bytes to the output, then calls toByteArray().
UPDATE: as long as you have the byte array, as @Peter pointed, you have to convert to ByteBuffer
ByteBuffer.wrap(bytes) JAVA 9 UPDATE: as stated by @saka1029 if you're using java 9+ you can use the default InputStream API which now includes InputStream::readAllBytes function, so no external libraries needed
InputStream is; byte[] bytes = is.readAllBytes() If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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