Question

How to set new value element at specific position (index) in ArrayList with Java

Answer 1

import java.util.ArrayList;

public class MyClass {
    public static void main(String args[]) {
        ArrayList<Integer> arrlist = new ArrayList<Integer>(5);
    
        arrlist.add(3);
        arrlist.add(6);
        arrlist.add(2);
        arrlist.add(9);
        arrlist.add(1);
        
        arrlist.set(2, 333);
    
        for (Integer n : arrlist) {
             System.out.println(n);
        }
    }
}



/*
run:

3
6
333
9
1

*/

 

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