Java Examples - Find an object in Array

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Problem Description:

How to find an object or a string in an Array?

Solution:

Following example uses Contains method to search a String in the Array.

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) );
   }
}

Result:

The above code sample will produce the following result.

Array elements of array1[common1, common2]
Array elements of array2[common1, common2, notcommon, notcommon1]
Array 1 contains String common2?? true
Array 2 contains Array1?? false


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