[java] Collection 활용

jpackage com.util;
 
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
 
public class CollectionTest {
    public static void main(String[] args) {
        List fruits = new ArrayList<>();
//        fruits.add("apple");
//        fruits.add("orange");
//        fruits.add("banana");
        
        //1.addAll
        Collections.addAll(fruits, "apple","orange","banana");
        
        //2. sort
        Collections.sort(fruits);
        System.out.println(fruits.toString());
        
        //3. search
        Collections.sort(fruits);
        System.out.println(Collections.binarySearch(fruits, "banana"));
        System.out.println(Collections.binarySearch(fruits, "grape"));
    
        //4. copy
        List list = new ArrayList();
        Collections.addAll(list, "one","two","three","four");
        Collections.copy(list, fruits);
        System.out.println(list.toString());
        
        //5. fill
        Collections.fill(list, "filled with dummy data");
        System.out.println(list.toString());
    }    
}