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Find Minimum element of Java ArrayList Example

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  1. /*
  2.   Find Minimum element of Java ArrayList Example
  3.   This java example shows how to find a minimum element of Java ArrayList using
  4.   min method of Collections class.
  5. */
  6.  
  7. import java.util.ArrayList;
  8. import java.util.Collections;
  9.  
  10. public class FindMinimumOfArrayListExample {
  11.  
  12.   public static void main(String[] args) {
  13.    
  14.     //create an ArrayList object
  15.     ArrayList arrayList = new ArrayList();
  16.    
  17.     //Add elements to Arraylist
  18.     arrayList.add(new Integer("327482"));
  19.     arrayList.add(new Integer("13408"));
  20.     arrayList.add(new Integer("802348"));
  21.     arrayList.add(new Integer("345308"));
  22.     arrayList.add(new Integer("509324"));
  23.    
  24.     /*
  25.        To find minimum element of Java ArrayList use,
  26.        static Object min(Collection c) method of Collections class.
  27.      
  28.        This method returns the minimum element of Java ArrayList according to
  29.        its natural ordering.
  30.     */
  31.    
  32.     Object obj = Collections.min(arrayList);
  33.    
  34.     System.out.println("Minimum Element of Java ArrayList is : " + obj);
  35.   }
  36. }
  37. /*
  38. Output would be
  39. Minimum Element of Java ArrayList is : 13408
  40. */