how to replace an element in array in java
class array{
public static void main(String[] args){
int arr[] = {1,2,3,4};
System.out.println("Before update" + arr[2]);
arr[2] = 9;//updating the value
System.out.println("After update" + arr[2]);
}
}
/*output:-
Before update3
After update9*/java set value of arraylist
import java.util.ArrayList;
public class SetExample {
public static void main(String args[]) {
ArrayList<Integer> arraylist = new ArrayList<Integer>();
arraylist.add(1);
System.out.println(arrayList.get(0));
//1
arrayList.set(0, 2)
System.out.println(arrayList.get(0));
//2
}
}Copyright © 2021 Codeinu
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