Java示例在数组中查找对象

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");

      System.out.println("Array elements of array1"+objArray);

      System.out.println("Array elements of array2"+objArray2);

      System.out.println("Array 1 contains String common2?? "

         +objArray.contains("common1"));

      System.out.println("Array 2 contains Array1?? "

         +objArray2.contains(objArray) );

   }

}