Thread: Java - Finding duplicate string values in over ten thousand element array

There's got to be a quicker way to do these comparisons.

for (int x = 0; x < subjects.size(); x++)
{
for (int y = 0; y < subjects.size(); y++)
{

System.out.println(contents.size()-x + " more to go");
try
{
if (subjects.get(x).equals(subjects.get(y)))
{
if (contents.get(x).equals(contents.get(y)))
{
if (x != y)
{
System.out.println("Match found - " + subjects.get(x) + " Contents - " + contents.get(x));
matches ++;
}
}
}
}
catch(NullPointerException ex)
{


}

}
}

System.out.println("Total matched - " + matches);