get index of object java code example
Example 1: ArrayList indexOf(Object o) method in java
import java.util.ArrayList;
public class ArrayListIndexOfMethodExample
{
public static void main(String[] args)
{
ArrayList<Integer> al = new ArrayList<Integer>(5);
al.add(8);
al.add(6);
al.add(5);
al.add(7);
al.add(9);
System.out.print("ArrayList values are: ");
for(Integer num : al)
{
System.out.print(num);
System.out.print(" ");
}
int position = al.indexOf(5);
System.out.println("\nElement 5 is at index: " + position);
}
}
Example 2: get index of element in array java
System.out.println(new String(list).indexOf("e"));