net.dongliu.dbutils.StringUtils Maven / Gradle / Ivy

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package net.dongliu.dbutils;

/**
 * Only for internal use
 *
 * @author Liu Dong
 */
public class StringUtils {

    public static String camelToUnderscore(String name) {
        StringBuilder sb = new StringBuilder(name.length() + 5);
        for (int i = 0; i < name.length(); i++) {
            char c = name.charAt(i);
            if (Character.isUpperCase(c)) {
                sb.append('_').append(Character.toLowerCase(c));
            } else {
                sb.append(c);
            }
        }
        return sb.toString();
    }
}