比如输入adadad!@#@112
输入得是adadad
求大神讲解
package test;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
String str;
int i;
str = reader.nextLine();//输入整行字符串
char b[] = str.toCharArray();//转换成字符数组
for (i = 0; i < b.length; i++) {
if ((b[i] >= 'a' && b[i] <= 'z') || (b[i] >= 'A' && b[i] <= 'Z')) {
System.out.print(b[i]);
}
}
}
}
望采纳