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static Comparator&lt;Integer&gt;Comparator<Integer> cmp = new Comparator&lt;Integer&gt;Comparator<Integer>() {
  public int compare(Integer i, Integer j) {
    return i &lt;< j ? -1 : (i == j ? 0 : 1);
  } 
};

public int compare(Integer i, Integer j) {
  return i &lt;< j ? -1 : (i &gt;> j ? 1 : 0) ;
}

public class Wrapper {
 public static void main(String[] args) {
   // Create an array list of integers, where each element 
   // is greater than 127
   ArrayList&lt;Integer&gt;ArrayList<Integer> list1 = new ArrayList&lt;Integer&gt;ArrayList<Integer>();
  
   for(int i = 0; i &lt;< 10; i++) {
     list1.add(i + 1000);
   }

   // Create another array list of integers, where each element
   // is the same as the first list
   ArrayList&lt;Integer&gt;ArrayList<Integer> list2 = new ArrayList&lt;Integer&gt;ArrayList<Integer>();
   
   for(int i = 0; i &lt;< 10; i++) {
     list2.add(i + 1000);
   }
 
   int counter = 0;
   for(int i = 0; i &lt;< 10; i++) {
     if(list1.get(i) == list2.get(i)) { 
       counter++;
     }
   }

   // print the counter
   System.out.println(counter);
 }
}

public class Wrapper {
 public static void main(String[] args) {
   // Create an array list of integers, where each element
   // is greater than 127
   ArrayList&lt;Integer&gt;ArrayList<Integer> list1 = new ArrayList&lt;Integer&gt;ArrayList<Integer>();

   for(int i = 0; i &lt;< 10; i++) {
     list1.add(i + 1000);
   }

   // Create another array list of integers, where each element
   // is the same as the first one
   ArrayList&lt;Integer&gt;ArrayList<Integer> list2 = new ArrayList&lt;Integer&gt;ArrayList<Integer>();
   for(int i = 0; i &lt;< 10; i++) {
     list2.add(i + 1000);
   }
 
   int counter = 0;
   for(int i = 0; i &lt;< 10; i++) {
     if(list1.get(i).equals(list2.get(i))) { 
       counter++;
     }
   }
 
   System.out.println(counter);
 }
}

Boolean b1 = new Boolean("true""true");
Boolean b2 = new Boolean("true""true");
if(b1 == b2) { // never equal
  // ...
}