I'm new to Java and I want to use one method, getCount, to get the sizes of two arraylists that are not the same size. What code could I use so that I can call, for example, examp1.getCount and examp2.getCount, and get the two different sizes?
This is frankly as basic a question as it gets, and google could have helped you with this easily. Here's your entire method if you want to design your own.
public static int getCount(ArrayList A){
return A.size();
}
在您的方法中,使用
.size()
获取两个 ArrayList 的大小并将大小存储在数组中,然后return
该数组。
Suppose you create 2 lists li1 and li2 then : package output;
import java.util.ArrayList;
import java.util.List;
public class CalculateLength {
public static void main(String[] args) {
List<Integer> li1= new ArrayList<>();
li1.add(1);
li1.add(2);
getCount(li1);
List<Integer> li2= new ArrayList<>();
li2.add(1);
li2.add(2);
li2.add(3);
li2.add(4);
getCount(li2);
}
public static int getCount(List list) {
System.out.println("LEngth = " + list.size());
return list.size();
}
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.