Binary to String Conversion in Java?

Question

I convert String to binary using following code. Now i want to convert it back to string then how can i do it.

 String s = "Milind";
 byte[] bytes = s.getBytes();
 StringBuilder binary = new StringBuilder();
 for (byte b : bytes)
 {
 int val = b;
 for (int i = 0; i < 8; i++)
 {
 binary.append((val & 128) == 0 ? 0 : 1);
 val <<= 1;
 }
 binary.append(' ');
 }
 System.out.println("'" + s + "' to binary: " + binary);

• Runcorn: Why do you need it? You already have the equivalent string.
• Compression: I am working on project in final year so it is important for me.

Answer 1

You Can Try This:

String[] singleBinaryArray = binary.toString().split("\\s");
String finalResult = "";
for (String string : singleBinaryArray) {
Character c = (char) Integer.parseInt(string, 2);
 finalResult += c.toString();
}
System.out.println("String " + finalResult);

• Compression: dude what do you mean by "\\s"?

Answer 2

The solution you are looking for is as below:

 String[] bytesStr = binary.toString().split(" ");
 for(String c : bytesStr){
 System.out.print((char)Byte.parseByte(c,2)); 
 }

The "binary" value you have is in reality the binary in string format. So convert it to a byte by using parseByte with a radix (base) of 2.

The above program prints Milind

• Compression: System.out.print((char)Byte.parseByte(c,2)); what does 2nd parameter says ??
• AdityaKeyal: The 2nd parameter (2) says that the number is in binary format hence the base radix = 2.