Having multiple errors with boolean conditions in if statements and method calling

Im having trouble figuring out some compiler errors such as illegal start to expression in my if and else statements and an else without an if.

` . import java.util.Scanner; public class A3Q1 {
public static void main(String[]args) { System.out.println("Perfect square identifier (Enter -1 to quit program)"); Scanner sc = new Scanner(System.in); System.out.println("Please enter a number: "); String squareNumStr = sc.nextLine(); //taking user input int squareNum = Integer.parseInt(squareNumStr); // taking string turning it into int boolean exitCommand = true;

        while(exitCommand)
        {
        if(squareNum >= 0) // will run method if int is a positive
        {
            perfectSquareIdentifier();
            if(return == true) // using boolean return to print 
            {
                System.out.println(squareNum + " is a perfect square.");
            }
            else if(return ==  false)
            {
                System.out.println(squareNum + " is not a perfect square");
            }
        }

        else if(squareNum == -1)
        {
            exitCommand = false;
            System.out.println();
        }
    }   
    System.ou.println("End of processing...");
}

public static boolean perfectSquareIdentifier(int squareNum)
{   
    int squareRoot = Math.sqrt(squareNum); //taking square root of user input
    if (squareRoot*squareRoot == squareNum) // testing if the root provided is a root or a number with remainders
    {
        return true;
    }

    else
    {
        return false;
    }

}

}`