Added Stock class

src/main/java/Stock.java

@@ -0,0 +1,25 @@
+import java.math.BigDecimal;
+import java.util.List;
+
+public class Stock {
+  String symbol;
+  String company;
+  List<BigDecimal> prices;
+  public Stock(String symbol, String company, List<BigDecimal> prices){
+    this.symbol = symbol;
+    this.company = company;
+    this.prices = prices;
+  }
+  public String getSymbol() {
+    return this.symbol;
+  }
+  public String getCompany() {
+    return this.company;
+  }
+  public BigDecimal getPrice() {
+    return this.prices.getLast();
+  }
+  public void addNewSalesPrice(BigDecimal price) {
+    this.prices.add(price);
+  }
+}