Java implementation Chinese, Unicode convert each other

//Chinese converted to Unicode code value String str = "Too many people to buy, please try again later!" "; Char[]archar=str.tochararray (); intivalue=0; String ustr= ""; for( int I=0;i<archar.length; i++) {

ivalue= ( int ) Str.charat (i);

if (ivalue<=256) {ustr+="\\" +integer. tohexstring (ivalue);      } Else{ustr+="\\u" +integer. tohexstring (ivalue);      }}
//UnicodeCode Valueconvert into ChineseString str ="Too many people to buy, please try again later!" "; Char[]archar=str.tochararray (); intivalue=0;String ustr=""; for( int I=0;i<archar.length; i++) {ivalue= ( int) Str.charat (i); if(ivalue<=256) {ustr+="\\" +integer. tohexstring (ivalue);      } Else{ustr+="\\u" +integer. tohexstring (ivalue);      }}

Java implementation Chinese, Unicode convert each other