public static void main(String[] args) {
String str="跳水,跑步,听音乐,看书,";
System.out.println(str.substring(0, str.length() -1));
}
public static void main(String[] args) {
String str="跳水,跑步,听音乐,看书,";
System.out.println(str.substring(0, str.length() -1));
}