Write a program in java that will be able to print out the duplicates of names.

Public class duplicate {
Public static void main (string []args){

String[] names = {"John", "Mary", "Paul", "John", "Jane", "Paul", "John"};

for (int i = 0; i < names.length; i++) {
for (int j = i + 1; j < names.length; j++) {
if (names[i].equals(names[j])) {
System.out.println("Duplicate: " + names[i]);
}
}
}
}
}