Friday, July 29, 2011

Get Size of Java ArrayList and loop through elements

    package org.best.examples;

        /*
      Get Size of Java ArrayList and loop through elements Example
      This Java Example shows how to get size or number of elements currently
      stored in ArrayList. It also shows how to loop through element of it.
    */
    
    import java.util.ArrayList;
    
    public class GetSizeOfArrayListExample {
    
    public static void main(String[] args) {
    //create an ArrayList object
    ArrayList arrayList = new ArrayList();
    
    //Add elements to Arraylist using
    arrayList.add("1");
    arrayList.add("2");
    arrayList.add("3");
    
    //To get size of Java ArrayList use int size() method
    int totalElements = arrayList.size();
    
    System.out.println("ArrayList contains...");
    //loop through it
    for(int index=0; index < totalElements; index++)
    System.out.println(arrayList.get(index));
    
    }
    }
    
    /*
    Output would be
    ArrayList contains...
    1
    2
    3
    */

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