如何在java中将字符串转换为二进制utf-16和二进制为字符串？

String str = "Hello, World!";
byte[] utf16Bytes = str.getBytes("UTF-16");

StringBuilder binaryString = new StringBuilder();
for (byte b : utf16Bytes) {
    String binary = Integer.toBinaryString(b & 0xFF);
    binaryString.append(String.format("%8s", binary).replace(' ', '0'));
}
String binaryUTF16 = binaryString.toString();

List<String> byteStrings = new ArrayList<>();
for (int i = 0; i < binaryUTF16.length(); i += 8) {
    byteStrings.add(binaryUTF16.substring(i, Math.min(i + 8, binaryUTF16.length())));
}

byte[] utf16Bytes = new byte[byteStrings.size()];
for (int i = 0; i < byteStrings.size(); i++) {
    int byteValue = Integer.parseInt(byteStrings.get(i), 2);
    utf16Bytes[i] = (byte) byteValue;
}

String str = new String(utf16Bytes, "UTF-16");