String中对字符串进行操作的一些fang

public class StrTest {
    public static void main(String[] args) {
        String a = "asdfgasdfg";
        a=a.substring(3);
        System.out.println(a);

    }
}

public class StrTest {
    public static void main(String[] args) {
        String a = "asdfgaxcv";
        String[] as = a.split("a");

        for (String b : as) {

            System.out.println(b);
        }

    }
}