Character类的方法检查字符串

ublic class aoe{
    protected aoe(){
       
    }
 public static void main(String args[]){
  int i;
                char[] a={'*','7','P','p',' '};
                for(i=0;i<a.length;i++){
                    if(Character.isDigit(a[i])){
                        System.out.println(a[i]+"是个数字！");
                    }
                    if(Character.isLetter(a[i])){
                        System.out.println(a[i]+"是个字母！");
                    }
                    if(Character.isWhitespace(a[i])){
                        System.out.println(a[i]+"是个空格！");
                    }
                    if(Character.isUpperCase(a[i])){
                        System.out.println(a[i]+"是个大写形式！");
                    }
                    if(Character.isLowerCase(a[i])){
                        System.out.println(a[i]+"是个小写形式！");
                    }
                    if(Character.isUnicodeIdentifierStart(a[i])){
                        System.out.println(a[i]+"是Unicode标识符的第一个有效字符！");
                    }
                }
 }
}

最后

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