arraylist length java
import java.util.ArrayList;
/*
* Java Program to find the length of ArrayList. *
*/
public class ArrayListDemo{
public static void main(String[] args) {
System.out.println("Welcome to Java Program to find the length of array list");
ArrayList<String> listOfBanks = new ArrayList<>();
int size = listOfBanks.size();
System.out.println("size of array list after creating: " + size);
listOfBanks.add("Citibank");
listOfBanks.add("Chase");
listOfBanks.add("Bank of America");
size = listOfBanks.size();
System.out.println("length of ArrayList after adding elements: " + size);
listOfBanks.clear();
size = listOfBanks.size();
System.out.println("size of ArrayList after clearing elements: " + size);
}
}
Output
Welcome to Java Program to find length of array list
the size of array list after creating: 0
the length of ArrayList after adding elements: 3
the length of ArrayList after clearing elements: 0
Log in, to leave a comment
3.75
4
ArrayList<String> listOfBanks = new ArrayList<>();
int size = listOfBanks.size();
System.out.println("size of array list after creating: " + size);
Thank you!
4
3.75
(4 Votes)
0
3.33
3
import java.util.ArrayList;
public class ArrayListSizeMethodExample
{
public static void main(String[] args)
{
ArrayList<String> al = new ArrayList<String>();
int s = al.size();
System.out.println("size of ArrayList: " + s);
al.add("red");
al.add("blue");
al.add("green");
s = al.size();
System.out.println("size of ArrayList after adding elements: " + s);
al.clear();
s = al.size();
System.out.println("size of ArrayList after clearing elements: " + s);
}
}
Thank you!
3
3.33
(3 Votes)
0
3.86
7
import java.util.ArrayList;
public class ArrayListSizeMethodExample
{
public static void main(String[] args)
{
ArrayList<Integer> al = new ArrayList<Integer>();
int s = al.size();
System.out.println("size of ArrayList: " + s);
al.add(25);
al.add(64);
al.add(73);
s = al.size();
System.out.println("size of ArrayList after adding elements: " + s);
al.clear();
s = al.size();
System.out.println("size of ArrayList after clearing elements: " + s);
}
}
Thank you!
7
3.86
(7 Votes)
0
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