public class TableUtilities {
    public static String getSmallMultiplicationTable() {
        return getMultiplicationTable(5);
    }

    public static String getLargeMultiplicationTable() {
        return getMultiplicationTable(10);
    }

    public static String getMultiplicationTable(int tableSize) {
        StringBuilder table = new StringBuilder("");
        int num = 0;
        for(int column = 1; column <= tableSize; column++) {
            num = column;
            for(int row = 1; row <= tableSize; row++) {
               num = column * row;
               table.append(String.format("%3d |", num)); 
            }
            table.append("\n");  
        }
        return table.toString();
    }
}