Convert float to 4 bytes array

How can I convert float type to 4 byte array -
not with strings but to exact binary representation.

See the javadoc of Float.floatToIntBits. Converting an int to an array of 4 bytes is easy, so I will left it as an exercise.
floatToIntBits
public static int floatToIntBits(float value)Returns a representation of the specified floating-point value according to the IEEE 754 floating-point "single format" bit layout.
Bit 31 (the bit that is selected by the mask 0x80000000) represents the sign of the floating-point number. Bits 30-23 (the bits that are selected by the mask 0x7f800000) represent the exponent. Bits 22-0 (the bits that are selected by the mask 0x007fffff) represent the significand (sometimes called the mantissa) of the floating-point number.
If the argument is positive infinity, the result is 0x7f800000.
If the argument is negative infinity, the result is 0xff800000.
If the argument is NaN, the result is 0x7fc00000.
In all cases, the result is an integer that, when given to the intBitsToFloat(int) method, will produce a floating-point value the same as the argument to floatToIntBits (except all NaN values are collapsed to a single "canonical" NaN value).
Parameters:
value - a floating-point number.
Returns:
the bits that represent the floating-point number.

Similar Messages

Convert XML data to byte array...

Hello All,
In my application, i have an XML file and the corresponding XSD file. This XML file is having some date, which i want to convert into an byte[] and then save it in a file.
How i can convert the XML data in the byte[]? Here as an example of the xml file and the byte[] data which i want to save in a file.
<?xml version="1.0" encoding="utf-8"?>
<HeadersInfo>
<header>
<id>0</id>
<Name>H1</Name>
</header>
<header>
<id>1</id>
<Name>H2</Name>
</header>
</HeasersInfo>
In the above example 'id' field is of type 'uint' and 'name' field is of type 'string' with max length of '5'. So in this case my byte array should be as shown below:
00 00 00 01 48 31 00 00 00
00 00 00 02 48 32 00 00 00
Here underlines values are for the 'id' parameter where as values in bold are for 'Name' parameter for all the header values in sequence. Name parameter is null (0x00) padded.
Thanks in advance,
IamHuM

Hi,
the following example extract the id, name values using LINQ To Xml and writes it to a memory stream using a binary writer and returns the result as a byte array:
internal static byte[] GetXmlAsByteArray()
var document = XDocument.Parse("<HeadersInfo>"
+ " <header><id>1</id><Name>H1</Name></header>"
+ " <header><id>2</id><Name>H2</Name></header>"
// additional testing
+ " <header><id>32767</id><Name>H1234</Name></header>"
+ " <header><id>305419896</id><Name>H56789</Name></header>"
+ "</HeadersInfo>");
const int NameLength = 5; // Max length for a name
byte[] zeroBytes = new byte[NameLength]; // Helper to fill name
using (var ms = new MemoryStream())
using (var writer = new BinaryWriter(ms))
// write each header
foreach (var header in document.Root.Elements("header"))
int id = (int)header.Element("id");
string name = (string)header.Element("Name");
byte[] nameBytes = System.Text.Encoding.UTF8.GetBytes(name);
Console.WriteLine("id: {0}, Name: {1}", id, name);
// Write id
writer.Write(GetUIntBytes((uint)id));
// Write name NameLength (5) max, otherwise padded
if (nameBytes.Length > NameLength)
writer.Write(nameBytes, 0, NameLength);
else
writer.Write(nameBytes, 0, nameBytes.Length);
if (nameBytes.Length < NameLength)
writer.Write(zeroBytes, 0, NameLength - nameBytes.Length);
byte[] result = ms.ToArray();
// dump array
foreach (var value in result)
Console.Write("{0:X2} ", value);
Console.WriteLine();
return result;
public static byte[] GetUIntBytes(uint value)
if (BitConverter.IsLittleEndian)
// swap bytes
value = ((value & 0x00ff) << 24)
| ((value & 0xff00) << 8)
| ((value & 0x00ff0000) >> 8)
| ((value & 0xff000000) >> 24);
return BitConverter.GetBytes(value);
For a general purpose solution you should create a class and split the example into separate methods to extract the data and write the values (integers, strings).
Regards, Elmar

Converting Image.jpg to byte array

Hi,
How do i convert a image (in any format like .jpeg, .bmp, gif) into a byte array
And also vice versa, converting byte array to image format
Thank you

how about Class.getResourceAsStream(String name).read(byte[] b)?

What is the best way to convert a cluster into byte array or string

I'm writing a program that sends UDP packets and I've defined the data I want to send via large clusters (with u8/u16/u32 numbers, u8/u16/u32 arrays, and nested clusters). Right before sending the data, I need to convert the clusters either into strings or byte arrays. The flatten to string function is almost perfect for this purpose. However, it's appending lengths to arrays and strings which renders this method useless, as far as I can tell.
As I have many of these clusters, I would rather not hard code the unbundle by names and converting/typecasting to byte arrays or strings for each one.
Is there a feature or tool I am overlooking?
Thank you!

deceased wrote:
Flatten to string has a boolean input of "Prepend string or array size" ... The default value is true.
That only specifies if a string or array size should be prepended if the outermost data element is a string or array. For embedded strings or arrays it has no influence. This is needed for the Unflatten to be able to reconstruct the size of the embedded strings and arrays.
The choice to represent the "Strings" (and Arrays) in the external protocol to LabVIEW strings (and arrays) is actually a pretty bad one unless there is some other element in the cluster that does define the length of the string. An external protocol always needs some means to determine how long the embedded string or array would be in order to decode the subsequent elements that follow correctly.
Possible choices here are therefore:
1) some explicit length in the protocol (usually prepended to the actual string or array)
2) a terminating NULL character for strings, (not very friendly for reliable protocol parsing)
3) A fixed size array or string
For number 1) and 2) you would always need to do some special processing unless the protocol happens to use explicitedly 32 bit integer length indicators directly prepended before the variable sized that.
For number 3) the best representation in LabVIEW is actually a cluster with as many elements inside as the fixed size.

How can i convert object to byte array very*100 fast?

i need to transfer a object by datagram packet in embeded system.
i make a code fallowing sequence.
1) convert object to byte array ( i append object attribute to byte[] sequencailly )
2) send the byte array by datagram packet ( by JNI )
but, it's not satisfied my requirement.
it must be finished in 1ms.
but, converting is spending 2ms.
network speed is not bottleneck. ( transfer time is 0.3ms and packet size is 4096 bytes )
Using ObjectOutputStream is very slow, so i'm using this way.
is there antoher way? or how can i improve?
Edited by: JongpilKim on May 17, 2009 10:48 PM
Edited by: JongpilKim on May 17, 2009 10:51 PM
Edited by: JongpilKim on May 17, 2009 10:53 PM

thanks a lot for your reply.
now, i use udp socket for communication, but, i must use hardware pci communication later.
so, i wrap the communication logic to use jni.
for convert a object to byte array,
i used ObjectInputStream before, but it was so slow.
so, i change the implementation to use byte array directly, like ByteBuffer.
ex)
public class ByteArrayHelper {
private byte[] buf = new byte[1024];
int idx = 0;
public void putInt(int val){
buf[idx++] = (byte)(val & 0xff);
buf[idx++] = (byte)((val>>8) & 0xff);
buf[idx++] = (byte)((val>>16) & 0xff);
buf[idx++] = (byte)((val>>24) & 0xff);
public void putDouble(double val){ .... }
public void putFloat(float val){ ... }
public byte[] toByteArray(){ return this.buf; }
public class PacketData {
priavte int a;
private int b;
public byte[] getByteArray(){
ByteArrayHelper helper = new ByteArrayHelper();
helper.putInt(a);
helper.putInt(b);
return helper.toByteArray();
but, it's not enough.
is there another way to send a object data?
in java language, i can't access memory directly.
in c language, if i use struct, i can send struct data to copy memory by socket and it's very fast.
Edited by: JongpilKim on May 18, 2009 5:26 PM

I want to convert a String into an array of bytes

I am working with telnet programming with java, where I want to convert login name and password of an online user in 'String' format to 'Bytes', plz help me. Which Input or Output Stream I can use

Assuming you've got the username / password into a String object, you can convert it to a byte[] array using this method.
String.getBytes();
Look at the String API
http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html
Hope that helps.

How to convert a Image object to byte Array?

Who can tell me, how to convert Image object to byte Array?
Example:
public byte[] convertImage(Image img) {
byte[] b = new byte...........
return b;

Hello,
any way would suit me, I just need a way to convert Image or BufferedImage to a byte[], so that I can save them. Actually I need to save both jpg and gif files without using any 3rd party classes. Please help me out.
thanx and best wishes

How to convert an int number to a byte array, and how to convert back?

Hello, everybody,
Just as the topic, if I have an int number(which should have 32-bit, or 4-byte), how can I convert it into a byte array. And also, how to convert it back.
Thank you in advance!

Alternatively you can use ByteBuffers to do this work for you
// to a Byte Array
int originalInt =...;
ByteBuffer myBuffer = ByteBuffer.allocate(4);
myBuffer.putInt( originalInt );
byte myArray[] = myBuffer.array();
// and back to an int
ByteBuffer myOtherBuffer = ByteBuffer.wrap(myArray);
int finalInt = myOtherBuffer.getInt();

Converting image into byte array

Hi all,
How to convert an integer array image into byte array ?
here i have a image like this :
private static int pixelArray[] = {
0xff000000, 0xff000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0xff000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
From this one i create image like this one :
Image image = Image.createRGBImage(pixelArray, width, height, true);
Now i want to convert that pixelArray into byte array ? how to do this
additionally i want to send this byte array to servlet .
thanks in advance.

Hi,
If you want to convert your int array to a byte array you should
split each integer into 4 bytes to avoid losing information. You can
rebuild your integer array later if you need to. I think this code
will work (i havent tested it):
byte[] pixel= new byte[pixelArray.length<< 2];
for (int i= pixelArray.length- 1; i>= 0; i--) {
int aux= i<< 2; // i* 4 = i<< 2
pixel[aux]= (byte) (pixelArray>> 32);
pixel[aux+ 1]= (byte) (pixelArray[i]>>> 16);
pixel[aux+ 2]= (byte) (pixelArray[i]>>> 8);
pixel[aux+ 3]= (byte) pixelArray[i];
Greets.

UnmarshalException for large byte array :: Weblogic 8.1 SP2

Hi,
1) We have a application running on Weblogic 8.1SP2.
2) Our scenario consist of Client code which reads a input file via Stream and converts it to a byte array before sending it to the Server.
When the server side code calls the Remote Bean (with byte array as an argument) it throws this exception :
"java.rmi.UnmarshalException: Software caused connection abort: socket write error"
Intermittently also got this error :: "weblogic.rjvm.PeerGoneException: ; nested exception is: java.io.EOFException"
3) This scenario works absolutely fine if the said Input File is of a smaller size.
4) I have also set the following params in config.xml <server .../> tag, but all in vain:
     CompleteMessageTimeout="480" also tried with "0"
     MaxMessageSize="2000000000"
     NativeIOEnabled="true"
Also tried with :
     MaxHTTPMessageSize="2000000000" & MaxT3MessageSize="2000000000"
Below is the exception trace:
java.rmi.UnmarshalException: Software caused connection abort: socket write error; nested exception is: java.net.SocketException: Software caused connection abort: socket write error
java.rmi.UnmarshalException: Software caused connection abort: socket write error; nested exception is: java.net.SocketException: Software caused connection abort: socket write error at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:297)
     at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:244)
Caused by: java.net.SocketException: Software caused connection abort: socket write error
     at weblogic.rjvm.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:108)
     at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:284)
     ... 6 more
Caused by: java.net.SocketException: Software caused connection abort: socket write error
     at java.net.SocketOutputStream.socketWrite0(Native Method)
     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
     at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
     at weblogic.socket.SocketMuxer.write(SocketMuxer.java:721)
     at weblogic.rjvm.t3.T3JVMConnection.sendMsg(T3JVMConnection.java:723)
     at weblogic.rjvm.MsgAbbrevJVMConnection.sendOutMsg(MsgAbbrevJVMConnection.java:276)
     at weblogic.rjvm.MsgAbbrevJVMConnection.sendMsg(MsgAbbrevJVMConnection.java:164)
     at weblogic.rjvm.ConnectionManager.sendMsg(ConnectionManager.java:549)
     at weblogic.rjvm.RJVMImpl.send(RJVMImpl.java:722)
     at weblogic.rjvm.MsgAbbrevOutputStream.flushAndSendRaw(MsgAbbrevOutputStream.java:292)
     at weblogic.rjvm.MsgAbbrevOutputStream.flushAndSend(MsgAbbrevOutputStream.java:300)
     at weblogic.rjvm.MsgAbbrevOutputStream.sendRecv(MsgAbbrevOutputStream.java:322)
     at weblogic.rjvm.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:103)
     ... 7 more
Any thoughts would be helpful?
Thanks,
Khyati

Hi,
1) We have a application running on Weblogic 8.1SP2.
2) Our scenario consist of Client code which reads a input file via Stream and converts it to a byte array before sending it to the Server.
When the server side code calls the Remote Bean (with byte array as an argument) it throws this exception :
"java.rmi.UnmarshalException: Software caused connection abort: socket write error"
Intermittently also got this error :: "weblogic.rjvm.PeerGoneException: ; nested exception is: java.io.EOFException"
3) This scenario works absolutely fine if the said Input File is of a smaller size.
4) I have also set the following params in config.xml <server .../> tag, but all in vain:
     CompleteMessageTimeout="480" also tried with "0"
     MaxMessageSize="2000000000"
     NativeIOEnabled="true"
Also tried with :
     MaxHTTPMessageSize="2000000000" & MaxT3MessageSize="2000000000"
Below is the exception trace:
java.rmi.UnmarshalException: Software caused connection abort: socket write error; nested exception is: java.net.SocketException: Software caused connection abort: socket write error
java.rmi.UnmarshalException: Software caused connection abort: socket write error; nested exception is: java.net.SocketException: Software caused connection abort: socket write error at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:297)
     at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:244)
Caused by: java.net.SocketException: Software caused connection abort: socket write error
     at weblogic.rjvm.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:108)
     at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:284)
     ... 6 more
Caused by: java.net.SocketException: Software caused connection abort: socket write error
     at java.net.SocketOutputStream.socketWrite0(Native Method)
     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
     at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
     at weblogic.socket.SocketMuxer.write(SocketMuxer.java:721)
     at weblogic.rjvm.t3.T3JVMConnection.sendMsg(T3JVMConnection.java:723)
     at weblogic.rjvm.MsgAbbrevJVMConnection.sendOutMsg(MsgAbbrevJVMConnection.java:276)
     at weblogic.rjvm.MsgAbbrevJVMConnection.sendMsg(MsgAbbrevJVMConnection.java:164)
     at weblogic.rjvm.ConnectionManager.sendMsg(ConnectionManager.java:549)
     at weblogic.rjvm.RJVMImpl.send(RJVMImpl.java:722)
     at weblogic.rjvm.MsgAbbrevOutputStream.flushAndSendRaw(MsgAbbrevOutputStream.java:292)
     at weblogic.rjvm.MsgAbbrevOutputStream.flushAndSend(MsgAbbrevOutputStream.java:300)
     at weblogic.rjvm.MsgAbbrevOutputStream.sendRecv(MsgAbbrevOutputStream.java:322)
     at weblogic.rjvm.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:103)
     ... 7 more
Any thoughts would be helpful?
Thanks,
Khyati

Bytes array to double words array

I have an array of bytes. I need to take 4 bytes at a time to create a doubleword (32bits).
I am currently using Decimate Array and Join Numbers twice to do this.
Is there a more efficient way of doing this that I am overlooking?
Solved!
Go to Solution.

nyc wrote: I do have to perform endian manipulation. The information is little endian. My original information is a string from a TCPIP read. My current attempt is to convert it to a bytes array.
Can you explain in more detail what I would do in this case?
As I noted, you can use the Unflatten From String. Since the data is coming from a TCP Read you can wire that directly to it:
Message Edited by smercurio_fc on 06-15-2010 09:19 AM
Attachments:
byte array to integer array_BD.png ‏8 KB
byte array to integer array.vi ‏18 KB

Convert byte array to table of int

[http://www.codeproject.com/KB/database/PassingArraysIntoSPs.aspx?display=Print|http://www.codeproject.com/KB/database/PassingArraysIntoSPs.aspx?display=Print] Hello friends.
I'm pretty new with PL/SQL.
I have code that run well on MSSQL and I want to convert it to PL/SQL with no luck.
The code converts byte array to table of int.
The byte array is actually array of int that was converted to bytes in C# for sending it as parameter.
The TSQL code is:
CREATE FUNCTION dbo.GetTableVarchar(@Data image)
RETURNS @DataTable TABLE (RowID int primary key IDENTITY ,
Value Varchar(8000))
AS
BEGIN
--First Test the data is of type Varchar.
IF(dbo.ValidateExpectedType(103, @Data)<>1) RETURN
--Loop thru the list inserting each
-- item into the variable table.
DECLARE @Ptr int, @Length int,
@VarcharLength smallint, @Value Varchar(8000)
SELECT @Length = DataLength(@Data), @Ptr = 2
WHILE(@Ptr<@Length)
BEGIN
--The first 2 bytes of each item is the length of the
--varchar, a negative number designates a null value.
SET @VarcharLength = SUBSTRING(@Data, @ptr, 2)
SET @Ptr = @Ptr + 2
IF(@VarcharLength<0)
SET @Value = NULL
ELSE
BEGIN
SET @Value = SUBSTRING(@Data, @ptr, @VarcharLength)
SET @Ptr = @Ptr + @VarcharLength
END
INSERT INTO @DataTable (Value) VALUES(@Value)
END
RETURN
END
It's taken from http://www.codeproject.com/KB/database/PassingArraysIntoSPs.aspx?display=Print.
The C# code is:
public byte[] Convert2Bytes(int[] list)
if (list == null || list.Length == 0)
return new byte[0];
byte[] data = new byte[list.Length * 4];
int k = 0;
for (int i = 0; i < list.Length; i++)
byte[] intBytes = BitConverter.GetBytes(list);
for (int j = intBytes.Length - 1; j >= 0; j--)
data[k++] = intBytes[j];
return data;
I tryied to convert the TSQL code to PL/SQL and thats what I've got:
FUNCTION GetTableInt(p_Data blob)
RETURN t_array --t_array is table of int
AS
l_Ptr number;
l_Length number;
l_ID number;
l_data t_array;
BEGIN
     l_Length := dbms_lob.getlength(p_Data);
l_Ptr := 1;
     WHILE(l_Ptr<=l_Length)
     loop
          l_ID := to_number( DBMS_LOB.SUBSTR (p_Data, 4, l_ptr));
          IF(l_ID<-2147483646)THEN
               IF(l_ID=-2147483648)THEN
                    l_ID := NULL;
               ELSE
                    l_Ptr := l_Ptr + 4;
                    l_ID := to_number( DBMS_LOB.SUBSTR(p_Data, 4,l_ptr));
               END IF;
               END IF;
l_data(l_data.count) := l_ID;
          l_Ptr := l_Ptr + 4;
     END loop;
     RETURN l_data;
END GetTableInt;
This isn't work.
This is the error:
Error report:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
06502. 00000 - "PL/SQL: numeric or value error%s"
I think the problem is in this line:
l_ID := to_number( DBMS_LOB.SUBSTR (p_Data, 4, l_ptr));
but I don't know how to fix that.
Thanks,
MTs.

I'd found the solution.
I need to write:
l_ID := utl_raw.cast_to_binary_integer( DBMS_LOB.SUBSTR(p_Data, 4,l_ptr));
instead of:
l_ID := to_number( DBMS_LOB.SUBSTR (p_Data, 4, l_ptr));
The performance isn't good, it's take 2.8 sec to convert 5000 int, but it's works.

Converting ASCII text (byte array ending in null) to a String

Hi all,
I am trying to convert a null terminated ascii string stored in a byte array to a java String. When I pass the byte array to the String constructor it
does not detect/interpret the null as a terminator for the ascii string. Is this something I have to manually program in? ie Check for where the null is and then
pass that subarray of everything before the null to the String constructor?
example of problem
// A B C D null F (note F is junk in the array, and should be ignored since it is after null)
byte[] asciiArray = { 65, 66, 67, 68, 0, 70 };
System.out.println(new String(asciiArray, "UTF-8"));
//this prints ABCD"sqare icon"F

Why do you expect the null character to terminate the string? If you come from a C or C++ background, you need to understand that java.lang.String is not just a mere character array. It's a full-fledged Java object that knows its length without having any need for null terminator. So Ascii 0 is just another character for String object. To achieve what you want to do, you have to manually loop through the byte array and stop when you encounter a null character.

Byte array convert to image works fine for a peiod of time, Then error

Hi all
I'm on a program of reading incoming image set which comes as byte arrays through socket and convert them back to images using the method.
javax.microedition.lcdui.Image.createImage();This works perfect for some time.
But after 1 minute of running it gives an error
java.lang.OutOfMemoryError: Java heap space
        at java.awt.image.BufferedImage.getRGB(Unknown Source)
        at com.sun.kvem.midp.GraphicsBridge.loadImage(Unknown Source)
        at com.sun.kvem.midp.GraphicsBridge.createImageFromData(Unknown Source)
        at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at com.sun.kvem.sublime.MethodExecution.process(Unknown Source)
        at com.sun.kvem.sublime.SublimeExecutor.processRequest(Unknown Source)
        at com.sun.kvem.sublime.SublimeExecutor.run(Unknown Source)My J2ME client code
public class ChangeImage extends Thread
    private SocketConnection sock = null;
    private Image img = null;
    private CanvasKey canvas = null;
    private InputStream in = null;
    public ChangeImage(SocketConnection sock, Canvas canvas) throws IOException
        this.sock = sock;
        this.canvas = (CanvasKey) canvas;
        in = sock.openInputStream();
    public void run()
        super.run();
        short length;
        while (true)
            DataInputStream din = null;
            try
                din = new DataInputStream(in);
                length = din.readShort();     // to determine next data packet size
                byte[] arr = new byte[length]; // next data packet store here
                din.readFully(arr); //read image
                img = Image.createImage(arr, 0, arr.length);
                canvas.setImage(img);
                ChangeImage.sleep(50);
            catch (Exception ex)
                ex.printStackTrace();
}When I comment following line no error prints.
img = Image.createImage(arr, 0, arr.length);So the problem is not with socket program.
What is this problem? Think old image isn't being flushed!!! in the method javax.microedition.lcdui.Image.createImage();Please help me.

Forgot to Mention i'm using Windows 8.1 - 32 GB Ram - i7-3970x - 2 SSd's in raid 0 for C Drive/ Storage drive is three ( 2 tb HDD in a raid 0 ) / Pictures Folder defaults to the Storage Drive not the Application drive .

Reading in any file and converting to a byte array

Okay what I am trying to do is to write a program that will read in any file and convert it into a int array so that I can then manipulate the values of the int array and then re-write the file. Once I get the file into an int array I want to try and compress the data with my own algorithm as well as try to write my own encryption algorithm.
What I have been looking for is code samples that essentially read in the file as a byte array and then I have been trying to convert that byte array into an int array which I could then manipulate. So does anyone have any sample code that essentially takes a file and converts it into an int array and then converts it back into a byte array and write the file. I have found code that is close but I guess I am just too new to this. Any help would be appreciated.

You can read a whole file into a byte array like this:File f = new File("somefile");
int size = (int) f.length();
byte[] contents = new byte[size];
DataInputStream in = new DataInputStream(
new BufferedInputStream(new FileInputStream(f)));
in.readFully(contents);
in.close();Note that you need to add in the proper exception handling code. You could also use RandomAccessFile instead of the DataInputStream.
Writing a byte array to a file is easier; just construct the FileOutputStream, call write on it with the byte array, and close the stream.

Convert float to 4 bytes array

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