Question

java 自定义异常 输入一串字符 当出现数字时 抛出异常

Answer 1

public class NumException extends RuntimeException {

public NumException() {
super();
}

public NumException(String name) {
super(name);
}

public static void main(String args[]) {
Scanner input = new Scanner(System.in);
System.out.println("请输入字符串:");
String str = input.nextLine();
if(str.matches("^.*\\d.*$")){
throw new NumException("字符串中包含数字");
}
}
}

Answer 2

public static void printString (String str) { for (int i=0; i

Answer 3

楼上回答真不错，我先借用谢谢了