Java程序检查输入的字符是否为ASCII 7位数字和字符
检查输入的值是否为ASCII 7位数字和字符(字母数字),检查字符的ASCII值是否存在 −
A to Z Or a to z Or 0 to 9
在此,我们有以下值 −
char one = '5';
现在,我们已经使用if-else对ASCII 7位数字和字符检查了一些条件。
if ((one >= 'A' && one <= 'Z') || (one >= 'a' && one <= 'z') || (one >= '0' && one <= '9')) { System.out.println("Given value is numeric and character (alphanumeric)!"); } else { System.out.println("Given value is not numeric and character!"); }
示例
public class Demo { public static void main(String []args) { char one = '5'; if ((one >= 'A' && one <= 'Z') || (one >= 'a' && one <= 'z') || (one >= '0' && one <= '9')) { System.out.println("Given value is numeric and character (alphanumeric)!"); } else { System.out.println("Given value is not numeric and character!"); } } }
输出
Given value is numeric and character (alphanumeric)!
让我们看另一个示例 −
示例
public class Demo { public static void main(String []args) { char one = 'V'; if ((one >= 'A' && one <= 'Z') || (one >= 'a' && one <= 'z') || (one >= '0' && one <= '9')) { System.out.println("Given value is numeric and character (alphanumeric)!"); } else { System.out.println("Given value is not numeric and character!"); } } }
输出
Given value is numeric and character (alphanumeric)!
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