| Return | Method | Summary |
|---|---|---|
| int | indexOf(Object o) | Returns the index of the first occurrence, or -1 if this list does not contain the element. |
| int | lastIndexOf(Object o) | Returns the index of the last occurrence, or -1 if this list does not contain the element. |
import java.util.ArrayList;
public class Main {
public static void main(String args[]) {
ArrayList<String> al = new ArrayList<String>();
al.add("C");
al.add("java2s.com");
al.add("D");
al.add("F");
al.add(1, "java2s.com");
System.out.println(al);
System.out.println(al.indexOf("java2s.com"));
System.out.println(al.lastIndexOf("java2s.com"));
}
}
The output:
[C, java2s.com, java2s.com, D, F]
1
2| java2s.com | Contact Us | Privacy Policy |
| Copyright 2009 - 12 Demo Source and Support. All rights reserved. |
| All other trademarks are property of their respective owners. |