Java——判断输入字符串数据是整数、小数还是字符

• 判断是整数还是字符
• 判断是否是合法百分数

public static boolean isNumberic(String str){
    Pattern pattern = Pattern.compile("[0-9]*\.?[0-9]+");
    Matcher isNum = pattern.matcher(str);
    if (isNum.matches()) {
        return true;
    }
    return false;
}

public static boolean isPercentage(String str){
    Pattern pattern = Pattern.compile("[0-9]*\.?[0-9]+%");
    Matcher isNum = pattern.matcher(str);
    if (isNum.matches()) {
        return true;
    }
    return false;
}