Trim String by String And PadLeft Functions in java

    public static String trimStringByString(String text, String trimBy) {
        int beginIndex = 0;
        int endIndex = text.length();
        while (text.substring(beginIndex, endIndex).startsWith(trimBy)) {
            beginIndex += trimBy.length();
        }
        while (text.substring(beginIndex, endIndex).endsWith(trimBy)) {
            endIndex -= trimBy.length();
        }
        return text.substring(0, endIndex);
}

    public static String padLeft(String in, int size, char padChar) {
        if (in.length() <= size) {
            char[] temp = new char[size];
            /* Llenado Array con el padChar*/
            for(int i =0;i<size;i++){
                temp[i]= padChar;
            }
            int posIniTemp = size-in.length();
            for(int i=0;i<in.length();i++){
                temp[posIniTemp]=in.charAt(i);
                posIniTemp++;
            }
            return new String(temp);
        }
        return "";
    }