Can byte set 01 as value

Can byte set 01 as value

Here is a small program
public class example {
private byte b1;
public byte getB1() {
return b1;
}
public void setB1(byte b1) {
this.b1 = b1;
}
public static void main(String[] args) {
final byte a = 01;
example e = new example();
e.setB1(a);
System.out.println(e.getB1());
}
}
This program return value as 1 not 01, however, I am expecting it to be 01
(which has been set) How to get 01 output from byte, if 01 has been set.