Examples of java.io.RandomAccessFile.readByte()

java.io.RandomAccessFile.readByte()
Reads an 8-bit byte value from this stream. @return byte the next byte value from the source stream. @throws IOException If a problem occurs reading from this DataInputStream. @see DataOutput#writeByte(int)

    public void test_readByte() throws IOException {
        // Test for method byte java.io.RandomAccessFile.readByte()
        RandomAccessFile raf = new java.io.RandomAccessFile(fileName, "rw");
        raf.writeByte(127);
        raf.seek(0);
        assertEquals("Incorrect bytes read/written", 127, raf.readByte());
        raf.close();
    }


    /**
     * @tests java.io.RandomAccessFile#readChar()

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    public void test_writeByteI() throws IOException {
        // Test for method void java.io.RandomAccessFile.writeByte(int)
        RandomAccessFile raf = new java.io.RandomAccessFile(fileName, "rw");
        raf.writeByte(127);
        raf.seek(0);
        assertEquals("Incorrect byte read/written", 127, raf.readByte());
        raf.close();
    }


    /**
     * @tests java.io.RandomAccessFile#writeBytes(java.lang.String)

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    public void test_writeByteI() throws IOException {
        // Test for method void java.io.RandomAccessFile.writeByte(int)
        RandomAccessFile raf = new java.io.RandomAccessFile(fileName, "rw");
        raf.writeByte(127);
        raf.seek(0);
        assertEquals("Incorrect byte read/written", 127, raf.readByte());
        raf.close();
    }


    /**
     * @tests java.io.RandomAccessFile#writeBytes(java.lang.String)

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    public void test_readByte() throws IOException {
        // Test for method byte java.io.RandomAccessFile.readByte()
        RandomAccessFile raf = new java.io.RandomAccessFile(fileName, "rw");
        raf.writeByte(127);
        raf.seek(0);
        assertEquals("Incorrect bytes read/written", 127, raf.readByte());
        raf.close();
    }


    /**
     * @tests java.io.RandomAccessFile#readChar()

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     * @see org.apache.activemq.kaha.impl.data.DataFileReader#readDataItemSize(org.apache.activemq.kaha.impl.data.DataItem)
     */
    public synchronized byte readDataItemSize(DataItem item) throws IOException {
        RandomAccessFile file = dataManager.getDataFile(item).getRandomAccessFile();
        file.seek(item.getOffset()); // jump to the size field
        byte rc = file.readByte();
        item.setSize(file.readInt());
        return rc;
    }


    /*

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                RandomAccessFile raf = getOrCreateRaf(Thread.currentThread(), location.getDataFileId());
                if (seekToLocation(raf, location)) {
                    long position = raf.getFilePointer();
                    location.setPointer(raf.readInt());
                    location.setSize(raf.readInt());
                    location.setType(raf.readByte());
                    if (location.getSize() > 0) {
                        location.setData(readLocationData(location, raf));
                        raf.seek(position);
                        return location;
                    } else {

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                    long position = 0;
                    do {
                        position = raf.getFilePointer();
                        next.setPointer(raf.readInt());
                        next.setSize(raf.readInt());
                        next.setType(raf.readByte());
                        if (type != Location.ANY_RECORD_TYPE && next.getType() != type) {
                            raf.skipBytes(next.getSize() - Journal.HEADER_SIZE);
                        } else {
                            break;
                        }

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    tempFile.seek(0);
    // Verify every 10th byte is actually a NOOP
    for(int i = 0; i < 5000; i+=10) {
      tempFile.seek(i);
      Assert.assertEquals(LogFile.OP_NOOP, tempFile.readByte());
    }


  }


  @Test

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    final int offset = ptr.getOffset();
    LogFile.OperationRecordUpdater updater = new LogFile
      .OperationRecordUpdater(dataFile);
    updater.markRecordAsNoop(offset);
    RandomAccessFile fileReader = new RandomAccessFile(dataFile, "rw");
    Assert.assertEquals(LogFile.OP_NOOP, fileReader.readByte());
  }


  @Test
  public void testGroupCommit() throws Exception {
    final FlumeEvent eventIn = TestUtils.newPersistableEvent(250);

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      Preconditions.checkState(open, "File closed");
      RandomAccessFile fileHandle = checkOut();
      boolean error = true;
      try {
        fileHandle.seek(offset);
        byte operation = fileHandle.readByte();
        if(operation == OP_NOOP) {
          throw new NoopRecordException("No op record found. Corrupt record " +
            "may have been repaired by File Channel Integrity tool");
        }
        Preconditions.checkState(operation == OP_RECORD,

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