hence i have the bytes value of a String. For example via:
String str="Test String";
System.out.println(str.getBytes());
which gives me:
[B@1339a0dc
can i use this for initializing a bytes array such as:
byte[] bytes=new bytes("[B@1339a0dc");
or something?
getBytes returns a byte array. So you can do:
byte[] bytes = str.getBytes();
directly.
[B@1339a0dc is just an object reference represented as a String, it is not the actual byte array
No. That's the class name ([B is byte[]) and the hashcode (1339a0dc is the hash code in hexadecimal). Hashes cannot be reversed since they're not bijective.
Why it prints this? Because you're using an implicit toString(). This:
System.out.println(str.getBytes());
gets translated by the compiler as this:
System.out.println(str.getBytes().toString());
because System.out.println() takes a String as argument, so an implicit conversion is made here.
So you're using the default Object#toString() implementation, which works as I explained before (more details in the documentation)
