/** {@inheritDoc} */
public double readDouble() throws IOException {
fileSize -= 8;
if (fileSize < 0) {
throw new EOFException();
}
return dataInput.readDouble();
}
static void display() throws IOException {
RandomAccessFile rf = new RandomAccessFile(file, "r");
for (int i = 0; i < 7; i++) {
System.out.println("Value " + i + " : " + rf.readDouble());
}
System.out.println(rf.readUTF());
rf.close();
}
public static void main(String[] args) throws Exception {
RandomAccessFile randomAccessFile = new RandomAccessFile("ratest.dat", "rw");
for (int i = 0; i < 5; i++) {
randomAccessFile.writeDouble(i * 1.44);
}
randomAccessFile.close();
;
randomAccessFile = new RandomAccessFile("ratest.dat", "rw");
randomAccessFile.seek(2 * 8);
randomAccessFile.writeDouble(48.123);
randomAccessFile.close();
randomAccessFile = new RandomAccessFile("ratest.dat", "rw");
for (int i = 0; i < 5; i++) {
System.out.println(randomAccessFile.readDouble());
}
randomAccessFile.close();
}
/** This reads a binary double from the file. */
public double readBinaryDouble(int col, int row) throws IOException {
raf.seek(row * nBytesPerRow + columnStartAt[col]);
return raf.readDouble();
}
/* @see java.io.DataInput.readDouble() */
public double readDouble() throws IOException {
return raf.readDouble();
}