Java——下划线转驼峰

private static String changeColumn(String column) {
    String name = column;
    if (name.indexOf("_") > 0 && name.length() != name.indexOf("_") + 1) {
        int lengthPlace = name.indexOf("_");
        name = name.replaceFirst("_", "");
        String s = name.substring(lengthPlace, lengthPlace + 1);
        s = s.toUpperCase();
        column = name.substring(0, lengthPlace) + s + name.substring(lengthPlace + 1);
    } else {
        return column;
    }
    return changeColumn(column);
}