Hi...everbody.I was referring to the visualforce developer guide and I came across this example in vf testing, But I am  gettig an error as failed. I am not bale to save the record may be because I am not able to pass the parameters to URL which is the only condition to save the values to Lead. Here are my vf page and controller codes..

Controller______________________
public class thecontroller {

            private String firstName;
            private String lastName;
            
            private String email;
            private String qp;

            public thecontroller() {
                this.qp = ApexPages.currentPage().getParameters().get('qp');
            }

            public String getFirstName() {
                  return this.firstName;
            }

            public void setFirstName(String firstName) {
                  this.firstName = firstName;
            }

            public String getLastName() {
                  return this.lastName;
            }

            public void setLastName(String lastName) {
                  this.lastName = lastName;
            }

            

            public String getEmail() {
                  return this.email;
            }

            public void setEmail(String email) {
                  this.email = email;
            }

            public PageReference save() {
                PageReference p = null;
                
                if (this.qp == null || !'yyyy'.equals(this.qp)) {
                    p = Page.failure;
                    p.getParameters().put('error', 'noParam');
                } else {
                    try {
                        Lead newLead = new Lead(LastName=this.lastName, 
                                                FirstName=this.firstName, 
                                                 
                                                Email=this.email);
                        insert newLead;
                    } catch (Exception e) {
                        p = Page.failure;
                        p.getParameters().put('error', 'noInsert');
                    }
                }
                
                if (p == null) {
                    p = Page.success;
                }
                
                p.setRedirect(true);
                return p;
            }
 }

and my visualforce code is____________________________
<apex:page controller="thecontroller" tabStyle="Contact">
    
        <apex:pageBlock >
        <apex:form >
           <p>First Name: <apex:inputText value="{!FirstName}"/></p>
           <p>Last Name: <apex:inputText value="{!LastName}"/></p>
           <p>Email: <apex:inputText value="{!Email}"/></p>
           <apex:commandButton value="SAVE" action="{!save}"/>
         </apex:form>
        </apex:pageBlock>
    
 
</apex:page>