Methods to modify an array - Java help

[gagirl1105]

Hey, all! I recently started a Java class (my first) and have run into a problem with an assignment on arrays. We're supposed to get user input for an array and then write methods to modify the array. I'm having trouble figuring out how to make the method actually change the array and am getting all sorts of errors with return type. Any help would be appreciated.

import java.util.*;


public class Unit04_A2
{
  
  
  
    //PART 1
    
    public static void main(String[] args)
    
    {
    
    if (args.length == 0)
    {
        System.out.println("You must enter at least one String at the command line.");
    }  
    
      
    
    if(args.length <=10)
    {  for (int i = 0; i < args.length; i++)
            {
                System.out.println("[" + (i) + 
                "] : " + args[i] + " is "+ args[i].length() + " characters long.");
            }
    }
        
        
        if (args.length >10)
        {
            System.out.println("You have entered " + args.length + " Strings. The last " + (args.length - 10) + " will not be processed.");
            
            for (int i = 0; i < 10; i++)
            {
                System.out.println("[" + (i) + 
                "] : " + args[i] + " is "+ args[i].length() + " characters long.");
            }
        }
        
     
    System.out.println("");
 
    
    
  }
  
  //PART 2
 
public String reverseIt(String [])
  
  {

   
    
  if(args.length <= 10)
  {
 
    for(int i = 0; i < args.length/2; i++)
        {
            String temp = args[i];
            args[i] = args[args.length-1-i];
            args[args.length - 1 -i] = temp;    
        }
  }
    
  if (args.length > 10) 
  {
    for(int i = 0; i < 10/2; i++)
        {
            String temp = args[i];
            args[i] = args[10-1-i];
            args[10 - 1 -i] = temp; 
        }
  }   
 
  return args;
}
}