The readByte() method of the ObjectInputStream class in Java is used to read the 8 bit (byte).
Syntax:
public byte readByte()
Parameters: This method does not accept any parameter.
Return Value: This method returns the 8 bit byte read
Errors and Exceptions: The function throws three exceptions which is described below:
- EOFException: The exception is thrown if the end of file is reached.
- IOException: The exception is thrown if an I/O error has occurred.
Below program illustrate the above method:
Program 1:
Java
// Java program to illustrate // the above method import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
byte [] array
= { 1 , 34 , 23 ,
42 , 69 , 22 };
try {
// create new byte
// array input stream
InputStream input
= new ByteArrayInputStream(array);
// create data input stream
DataInputStream output
= new DataInputStream(input);
// readBoolean till the
// data available to read
while (output.available() > 0 ) {
// read one single byte
byte bt = output.readByte();
// print the byte
System.out.print(bt + " " );
}
}
catch (Exception ex) {
}
}
} |
Output:
Program 2:
Java
// Java program to illustrate // the above method import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
byte [] array
= { 'G' , 'e' , 'e' , 'k' ,
's' , 'f' , 'o' , 'r' ,
'g' , 'e' , 'e' , 'k' ,
's' };
try {
// create new byte
// array input stream
InputStream input
= new ByteArrayInputStream(array);
// create data input stream
DataInputStream output
= new DataInputStream(input);
// readBoolean till the
// data available to read
while (output.available() > 0 ) {
// read one single byte
byte bt = output.readByte();
// print the byte
System.out.print(bt + " " );
}
System.out.println();
System.out.println();
}
catch (Exception ex) {
}
}
} |
Output:
Reference:
https://docs.oracle.com/javase/10/docs/api/java/io/ObjectInputStream.html#readByte()