--java example of encoding and decoding data

Yesterday borrowed a "Web Design Experiment Tutorial (Java language)", and then read the first chapter, a swing example, so for everyone to share!

As for the coding and decoding of the data, I think it has been explained very clearly in the example, and two methods have been done.

Turn it into a 16-binary.

//UTF8 decodingBtnutf8decode =NewJButton ("utf8\u89e3\u7801\u7801\u7ed3\u679c"); Btnutf8decode.addmouselistener (NewMouseadapter () {@Override Public voidmouseclicked (MouseEvent e) {String hexstr=Tfbytes.gettext (); String[] STRs= Hexstr.split (""); byte[] bytes =New byte[Strs.length];  for(inti=0;i<strs.length; i++) {Bytes[i]= (byte) integer.valueof (strs[i],16). Intvalue (); } string String= ""; Try{string=NewString (Bytes, "UTF-8"); } Catch(unsupportedencodingexception E2) {//Todo:handle ExceptionE2.printstacktrace (); }finally{Tfcharsutf8.settext (string);        }            }        }); 

//GBK decodingBtngbkdecode =NewJButton ("gbk\u89e3\u7801\u7ed3\u679c"); Btngbkdecode.addmouselistener (NewMouseadapter () {@Override Public voidmouseclicked (MouseEvent e) {String hexstr=Tfbytes.gettext (). toString (). Trim (); String[] STRs= Hexstr.split (""); byte[] Array =New byte[Strs.length];  for(inti=0; i<strs.length; i++) {Array[i]= (byte) integer.valueof (strs[i],16). Intvalue (); } Charset CS= Charset.forname ("GBK"); Charbuffer Buffer=Cs.decode (Java.nio.ByteBuffer.wrap (array));            Tfcharsgbk.settext (Buffer.tostring ()); }        });

//UTF8 EncodingBtnutf8encode =NewJButton ("utf8\u7f16\u7801\u7ed3\u679c"); Btnutf8encode.addmouselistener (NewMouseadapter () {@Override Public voidmouseclicked (MouseEvent e) {String str=Tfchars.gettext (); String hexstr= ""; Try {                    byte[] bytes = Str.getbytes ("UTF-8");  for(inti=0; i<bytes.length; i++) {hexstr+ = Integer.tohexstring (Bytes[i] & 0xFF). toUpperCase () + ""; }                } Catch(unsupportedencodingexception E2) {//Todo:handle ExceptionE2.printstacktrace (); }finally{tfbytesutf8.settext (HEXSTR); }            }        });

//Code GBKJButton Btngbkencode =NewJButton ("gbk\u7f16\u7801\u7ed3\u679c"); Btngbkencode.addmouselistener (NewMouseadapter () {@Override Public voidmouseclicked (MouseEvent e) {String str=Tfchars.gettext (). toString (). Trim (); Charset CS= Charset.forname ("GBK"); Java.nio.ByteBuffer Buffer=Cs.encode (str); String hexstr= "";  while(buffer.remaining () > 0) {hexstr+ = Integer.tohexstring (Buffer.get () & 0xFF). toUpperCase () + "";            } tfbytesgbk.settext (HEXSTR); }        }); 

--java example of encoding and decoding data