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+// https://community.topcoder.com/stat?c=problem_statement&pm=13521%0A%0Apublic class NamingConvention %7B%0A%09public static String toCamelCase(String variableName) %7B%0A%09%09String%5B%5D wordsInVariableName = variableName.split(%22_%22);%0A%09%09if (wordsInVariableName.length %3C= 1) %7B%0A%09%09%09return variableName;%0A%09%09%7D%0A%09%09%0A%09%09StringBuilder newVariableName = new StringBuilder();%0A%09%09%0A%09%09newVariableName.append(wordsInVariableName%5B0%5D);%0A%09%09for (int i = 1; i %3C wordsInVariableName.length; ++i) %7B%0A%09%09%09newVariableName.append(wordsInVariableName%5Bi%5D.substring(0, 1).toUpperCase() + wordsInVariableName%5Bi%5D.substring(1));%0A%09%09%7D%0A%09%09%0A%09%09return newVariableName.toString();%0A%09%7D%0A%7D%0A

Create NamingConvention.java