public class Text {
public static void main(String[] args) {
String s = new String("gw,.r.o,y.d,d.1");
String s1[] = s.split("d");
for (int i=0;i<s1.length;i++) {
System.out.println(s1[i]);
}
}
}
String s1[] = s.split("d");这一句,当我把 "d" 换成 "," "o" "r"都可以,偏偏换成".",啥都没打印出来,想问下这是为什么喃?