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  1. import java.nio.charset.StandardCharsets;
  2.  
  3. import javax.xml.bind.DatatypeConverter;
  4.  
  5. class Ideone
  6. {
  7. public static void main(String[] args)
  8. {
  9. final String string = "Hello, world!";
  10. final String hex = DatatypeConverter.printHexBinary(string.getBytes(StandardCharsets.UTF_8));
  11. System.out.println(new String(DatatypeConverter.parseHexBinary(hex), StandardCharsets.UTF_8));
  12. }
  13. }
Success #stdin #stdout 0.05s 4386816KB
stdin
Standard input is empty
stdout
Hello, world!