Search collection element : Collections « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. Collections

import java.text.DateFormatSymbols;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class Main {
  public static void main(String[] args) {
    List list = new LinkedList();

    DateFormatSymbols dfs = new DateFormatSymbols();
    String[] months = dfs.getMonths();
    for (int i = 0; i < months.length; i++) {
      String month = months[i];
      list.add(month);
    }

    Collections.sort(list);
    System.out.println("Month Names = " + list);
    int index = Collections.binarySearch(list, "October");
    if (index > 0) {
      System.out.println("Found at index = " + index);
      String month = (String) list.get(index);
      System.out.println("Month = " + month);
    }
  }
}