How to convert floating point numbers to 4 bytes in Java?

I haven't been able to convert such things:

byte[] b = new byte[] { 12,24,19,17};

Become something like this:

float myfloatvalue = ?;

Can someone give me an example?

And how do you turn this float back to bytes?

Solution

From byte [] – > floating, you can:

byte[] b = new byte[] { 12,17};
float myfloatvalue = ByteBuffer.wrap(b).getFloat();

This is using ByteBuffer Allocate is an alternative to converting float – > Byte []:

int bits = Float.floatToIntBits(myFloat);
byte[] bytes = new byte[4];
bytes[0] = (byte)(bits & 0xff);
bytes[1] = (byte)((bits >> 8) & 0xff);
bytes[2] = (byte)((bits >> 16) & 0xff);
bytes[3] = (byte)((bits >> 24) & 0xff);