Input/Output in Java

Author: Ravi Poswal

In java, treat the flow of data as stream based. A collection of bytes is represented as a stream. A stream is carrying out input/output actions. You can say that stream is like a pipe in which data is a transfer from source to destination.  

Advance I/O streams following characteristics

  • Abstraction

  • Flexibility

  • High Speed

Java provides java.io package, which contains many stream classes. Input/Output stream provides two ways

  1. Byte Oriented: The flow of data handling on bytes

  2. Character Oriented: The flow of data handles characters

Above, both stream ways are different from each other. Character-oriented stream support Unicode characters but byte oriented do not support them.

Code Example

class Test {
    public static void main(String[] args) {  
        byte[] data = {65, 66, 67, 68, 69};  // byte array
        for (int i = 0; i < data.length; i++) {
            System.out.println("Byte value: " + data[i] + " Character: " + (char)data[i]);
        }
    }
}
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