public class ArrayHandler {

    public static void main(String[] args) {

        // Initialise array to pass to method.
        int[] passedArray = { 1, 2, 3, 2 };

        // Run method and get array without duplicates.
        int[] returnedArray = removeRepeatedValues(passedArray);

        // Print contents of returned array.
        for (int i = 0; i < returnedArray.length; i++) {
            System.out.print(returnedArray[i] + " ");
        }
    }

    public static int[] removeRepeatedValues(int[] oldArray) {

        // Empty arrays are returned.
        if (oldArray.length == 0) {
            return oldArray;
        }

        // Duplicate counter used to determine final array length.
        int duplicateCounter = 0;

        // Each interger checked against every other integer to see if
        // duplicate.
        // If duplicate, counter increased. Duplicate is replaced by
        // oldArray[0].
        for (int i = 0; i < oldArray.length; i++) {
            for (int j = 0; j < oldArray.length; j++) {
                if ((oldArray[i] == oldArray[j]) && (i != j)) {
                    oldArray[j] = oldArray[0];
                    if (j < i) {
                        duplicateCounter++;
                        break;
                    }
                }
            }
        }

        // Create a new array with correct length.
        int[] newArray = new int[oldArray.length - duplicateCounter];

        // Copy over first integer,
        newArray[0] = oldArray[0];

        int l = 1;

        // Copy over remaining integers ignoring duplicates.
        for (int k = 1; k < oldArray.length; k++) {
            if (!(oldArray[k] == oldArray[0])) {
                newArray[l] = oldArray[k];
                l++;
            }
        }

        return newArray;
    }
}