Java 从一个数组删除另外一个数组

import java.util.ArrayList;

public class Main {
   public static void main(String[] args)  {
      ArrayList objArray = new ArrayList();
      ArrayList objArray2 = new ArrayList();
      objArray2.add(0,"common1");
      objArray2.add(1,"common2");
      objArray2.add(2,"notcommon");
      objArray2.add(3,"notcommon1");
      objArray.add(0,"common1");
      objArray.add(1,"common2");
      objArray.add(2,"notcommon2");
      System.out.println("Array elements of array1" +objArray);
      System.out.println("Array elements of array2" +objArray2);
      objArray.removeAll(objArray2);
      System.out.println("Array1 after removing array2 from array1"+objArray);
   }
}