public class test { public static void main(String[] args){ String str = ""; System.out.println(str.length()); System.out.println(str.split(",").length); System.out.println(str.split(",")[0]);
System.out.println(“Over!”); } }
输出为:
0
1
Over!
public class test { public static void main(String[] args){ String str = ""; System.out.println(str.length()); System.out.println(str.split(",").length); System.out.println(str.split(",")[0]);
System.out.println(“Over!”); } }
输出为:
0
1
Over!