java的split方法我覺(jué)得大家都很常用，不知道大家有沒(méi)有發(fā)現(xiàn)過(guò)下面這個(gè)有趣的現(xiàn)象，先別看答案，猜猜是否和你的預(yù)期結(jié)果一樣
、、、
public class SplitTest {
public static void main(String[] args) {
String a= "1,2,3";
String b= "1,2,3,";
String c= "1,2,3,,";
String d= ",,1,2,3";
String e= "1,2,,3";
System.out.println(a.split(",").length);
System.out.println(b.split(",").length);
System.out.println(c.split(",").length);
System.out.println(d.split(",").length);
System.out.println(e.split(",").length);
}

}
、、、
測(cè)試結(jié)果：
3
3
3
5
4