String s='0000000002121210's=s.replaceAll('^(0+)', '');System.out.println(s);

補充：Java中數(shù)字處理去掉末尾的0

public static String insertComma(String s, int len) { if (s == null || s.length() < 1) {return ''; } NumberFormat formater = null; double num = Double.parseDouble(s); if (len == 0) {formater = new DecimalFormat('###,###'); } else {StringBuffer buff = new StringBuffer();buff.append('###,###.');for (int i = 0; i < len; i++) { buff.append('#');}formater = new DecimalFormat(buff.toString()); } return formater.format(num);}

double num = 5.5500; DecimalFormat decimalFormat = new DecimalFormat('##########.##########'); String numConverted = decimalFormat.format(num); //5.55

利用“########.##########”

以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持好吧啦網(wǎng)。如有錯誤或未考慮完全的地方，望不吝賜教。