Hello,

This is the trailhead questions which I am trying to solve :

Create an Apex class that returns an array (or list) of formatted strings ('Test 0', 'Test 1', ...). The length of the array is determined by an integer parameter.The Apex class must be called 'StringArrayTest' and be in the public scope.
The Apex class must have a public static method called 'generateStringArray'.
The 'generateStringArray' method must return an array (or list) of strings. Each string must have a value in the format 'Test n' where n is the index of the current string in the array. The number of returned strings is specified by the integer parameter to the 'generateStringArray' method.


Here is my code :

public class StringArrayTest {
    public static List <String> generateStringArray (Integer n) {
       List<String> List1 = new List<String> ();
        for(Integer i=0;i<n;i++) {
          List1.add('\'Test'+ i+'\'' );
  }
        System.debug(List1);
        return List1;
    } 

}


I am getting following error :

Challenge not yet complete... here's what's wrong: 
Executing the 'generateStringArray' method failed. Either the method does not exist, is not static, or does not return the proper number of strings.


I tried it many times but I am not able to solve this problem. Please help. 



 

I'm getting the error "The outputLink component is not binding to the ID of a case" for this challenge. I've checked several threads on here and I'm almost certain it should be correct. It does link to the details page for the case. 

I initially just had the ID linking but have changed it so both case number and id link via id in case that mattered. 

I've also previously tried having a complete url as the value but no luck. 

Any help would be appreciated.

<apex:page controller="NewCaseListController">
 
        <apex:pageBlock title="New Case List" id="cases_list">
            
    <apex:repeat value="{! newcases }" var="cases">
       
        <apex:outputLink value="/{! cases.id}">
        ID:  {! cases.id }
        </apex:outputLink><br/>
        <apex:outputLink value="/{! cases.id}">
        Case Number:  {! cases.CaseNumber }
        </apex:outputLink><br/>    
    
    </apex:repeat>
            
        </apex:pageBlock>

This is the Challenge:

To pass this challenge, create an Apex class that inserts a new account named after an incoming parameter. If the account is successfully inserted, the method should return the account record. If a DML exception occurs, the method should return null.The Apex class must be called 'AccountHandler' and be in the public scope.
The Apex class must have a public static method called 'insertNewAccount'.
The 'insertNewAccount' method must accept an incoming string as a parameter, name the account after the parameter, insert it into the system and then return the account record.
The 'insertNewAccount' method must also accept an empty string, catch the failed DML and return null.


My Class:

public class AccountHandler {

    public static Account insertNewAccount (String accName, Account a) {
         try{   
          a.name = accName;
    
         insert a;
        return a;
        }
        catch(Exception e) {
            return null;
        }
    }    
}






Throwing this error, how many times i modified the class.
what is the correct class.?