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There is Vector and DataOutputStream. I need to write bytes from Vector (toArray returns Byte[]) to the stream, but it understands byte[] only. How to convert Byte[] to byte[] ?
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A byte in Java is 8 bits. It is a primitive data type, meaning it comes packaged with Java. Bytes can hold values from -128 to 127. No special tasks are needed to use it; simply declare a byte variable and you are off to the races.
The recommended solution to concatenate two or more byte arrays is using ByteArrayOutputStream . The idea is to write bytes from each of the byte arrays to the output stream, and then call toByteArray() to get the current contents of the output stream as a byte array.
The addition of two-byte values in java is the same as normal integer addition. The byte data type is 8-bit signed two's complement integer. It has a minimum value of -128 and a maximum value of 127 (inclusive).
Arrays. fill(). This method assigns the required byte value to the byte array in Java.
You could use the toPrimitive method in the Apache Commons lang library ArrayUtils class?
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