Java Beans

Using JSP EL to display the Stock object calls its toString() method.

${stock}

<%-- Stock [symbol=ZTS, name=Zoetis Inc., price=79.73] --%>

Use the . (dot) operator to access bean properties by name.

${stock.price}
${stock.symbol}
${stock.name}

These properties correspond to the Java class's getter methods.

Practice Exercise

${stock.price} is NOT referring to the private double price field in Stock. * JSP EL's . operator can only look for getter methods. * The getter must be named getPrice() for ${stock.price} to work correctly. Similarly, ${stock.symbol} requires the JavaBean getter getSymbol().

Drill

ExpressionLanguage/src/main/webapp/WEB-INF/select.jsp

• Change the page to output the stock's properties. Output symbol and value with bullets.

name
* symbol
* price

(Solution: /WEB-INF/solutions/selectProperties.jsp, com.example.el.solutions.servlets.StockServletProperties)

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