public static String readFile(String filename) {
String s = "";
FileInputStream in = null;
// FileReader in = null;
try {
File file = new File(filename);
byte[] buffer = new byte[(int) file.length()];
// char[] buffer = new char[(int) file.length()];
in = new FileInputStream(file);
// in = new FileReader(file);
in.read(buffer);
s = new String(buffer);
in.close();
} catch (FileNotFoundException fnfx) {
System.err.println("File not found: " + fnfx);
} catch (IOException iox) {
System.err.println("I/O problems: " + iox);
} finally {
if (in != null) {
try {
in.close();
} catch (IOException ignore) {
// ignore
}
}
}
return s;
}
/**
* Closes open files and resources associated with the open DDSImage. No other methods may be
* called on this object once this is called.
*/
public void close() {
try {
if (chan != null) {
chan.close();
chan = null;
}
if (fis != null) {
fis.close();
fis = null;
}
buf = null;
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String args[]) throws Exception {
FileInputStream fin = new FileInputStream("readandshow.txt");
FileChannel fc = fin.getChannel();
ByteBuffer buffer = ByteBuffer.allocate(1024);
fc.read(buffer);
buffer.flip();
int i = 0;
while (buffer.remaining() > 0) {
byte b = buffer.get();
System.out.println("Character " + i + ": " + ((char) b));
i++;
}
fin.close();
}
public static void main(String[] args) throws Exception {
File blah = File.createTempFile("blah", null);
blah.deleteOnExit();
ByteBuffer[] dstBuffers = new ByteBuffer[10];
for (int i = 0; i < 10; i++) {
dstBuffers[i] = ByteBuffer.allocateDirect(10);
dstBuffers[i].position(10);
}
FileInputStream fis = new FileInputStream(blah);
FileChannel fc = fis.getChannel();
// No space left in buffers, this should return 0
long bytesRead = fc.read(dstBuffers);
if (bytesRead != 0) throw new RuntimeException("Nonzero return from read");
fc.close();
fis.close();
}