Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

Step 2. Create a JSP facelet named GuessNumber as shown in Listing
44.10, GuessNumber.xhtml.
Listing 44.9 GuessNumber.java
package jsf2demo;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
@ManagedBean
@ViewScoped
public class GuessNumber {
private int number;
private String guessString;
public GuessNumber() {
number = (int)(Math.random() * 100);
}
public String getGuessString() {
return guessString;
}
public void setGuessString(String guessString) {
this.guessString = guessString;
}
public String getResponse() {
if (guessString == null)
return ""; // No user input yet
}
}
int guess = Integer.parseInt(guessString);
if (guess < number)
return "Too low";
else if (guess == number)
return "You got it";
else
return "Too high";
The managed bean uses the @ViewScope annotation (line 5) to set up the
view scope for the bean. The view scope is most appropriate for this
project. The bean is alive as long as the view is not changed. The bean
is created when the page is displayed for the first time. A random
number between 0 and 99 is assigned to number (line 13) when the bean is
created. This number will not change as long as the bean is alive.
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