支援中文,字母,數字,長度大於1個漢字,小於20個字元
阿新 • • 發佈:2018-12-13
public class Test { public static void main(String[] args) { String InputName = "我是 CSDN,"; boolean result = checkInputName(InputName); if(!result){ System.out.println("入住人格式錯誤請重新輸入!"); } } public static boolean isChineseChar(char c) { return String.valueOf(c).matches("[\u4e00-\u9fa5]"); } public static boolean checkInputName(String str){ if(str.length() < 2 || str.length() > 20){ return false; } boolean isRight = true; for (int i = 0; i < str.length(); i++){ boolean isDigit = false, isLetter = false, isChinses =false; if(isChineseChar(str.charAt(i))) { System.out.println("該字元是中文:" + str.charAt(i)); isChinses = true; }else if (Character.isDigit(str.charAt(i))){ System.out.println("該字元是數字:" + str.charAt(i)); isDigit = true; }else if (Character.isLetter(str.charAt(i))) { System.out.println("該字元是字母:" + str.charAt(i)); isLetter = true; } if(!isDigit && !isLetter && !isChinses){ System.out.println("該字元既不是數字、字母、中文:" + str.charAt(i)); isRight = false; break; } } return isRight; } }