Java hump character and underscore character conversion tool class

     Public Static Final CharUnderline= ' _ ';  Public Staticstring Cameltounderline (string param) {if(param==NULL||"". Equals (Param.trim ())) {            return""; }        intlen=param.length (); StringBuilder SB=NewStringBuilder (len);  for(inti = 0; i < Len; i++) {            CharC=Param.charat (i); if(Character.isuppercase (c)) {sb.append (underline);            Sb.append (Character.tolowercase (c)); }Else{sb.append (c); }        }        returnsb.tostring (); }     Public Staticstring Underlinetocamel (string param) {if(param==NULL||"". Equals (Param.trim ())) {            return""; }        intlen=param.length (); StringBuilder SB=NewStringBuilder (len);  for(inti = 0; i < Len; i++) {            CharC=Param.charat (i); if(c==underline) {               if(++i<Len)               {Sb.append (Character.touppercase (Param.charat (i))); }            }Else{sb.append (c); }        }        returnsb.tostring (); }     Public Staticstring UnderlineToCamel2 (string param) {if(param==NULL||"". Equals (Param.trim ())) {            return""; } StringBuilder SB=NewStringBuilder (param); Matcher MC= Pattern.compile ("_"). Matcher (param); intI=0;  while(Mc.find ()) {intPosition=mc.end ()-(i++); //string.valueof (Character.touppercase (Sb.charat (position)));Sb.replace (Position-1,position+1,sb.substring (position,position+1). toUpperCase ()); }        returnsb.tostring (); }     Public Static voidMain (string[] args) {}

Reference from: http://blog.csdn.net/xiejx618/article/details/30129851

Java hump character and underscore character conversion tool class