Using the Double Brace Initialization.

     

import java.util.ArrayList;
import java.util.List;

public class Main {

  static List<String> list = new ArrayList<String>() {
    {
      add("A");
      add("B");
      add("C");
      add("D");
      add("E");
      add("F");
    }
  };

  public static void main(String args[]) {
    dump(list);
  }

  public static void dump(List<String> list) {
    for (String s : list) {
      System.out.println(s);
    }
  }
}

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Using the Double Brace Initialization. : List « Collections Data Structure « Java

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