Java字符串长度不够前面或后面补0

public static String addZeroForNum(String str, int strLength) {int strLen = str.length();StringBuffer sb = null;while (strLen < strLength) {sb = new StringBuffer();sb.append("0").append(str);// 左补0// sb.append(str).append("0");//右补0str = sb.toString();strLen = str.length();}return str;
}

Java字符串长度不够前面或后面补0

public static String addZeroForNum(String str, int strLength) {int strLen = str.length();StringBuffer sb = null;while (strLen < strLength) {sb = new StringBuffer();sb.append("0").append(str);// 左补0// sb.append(str).append("0");//右补0str = sb.toString();strLen = str.length();}return str;
}