DividendStock.java:5: cannot find symbol

symbol  : constructor Stock()

location: class Stock

    public DividendStock(String symbol) {

                                        ^

DividendStock.java:6: symbol has private access in Stock

        this.symbol = symbol;

        ^

DividendStock.java:7: numShares has private access in Stock

        this.numShares = 0;

        ^

DividendStock.java:8: totalCost has private access in Stock

        this.totalCost = 0.00;

        ^

4 errors