JAVA

public class BOAT
{
    this is a boat.
    look at my java boat.
   
    go boat go.
   
    why is there so many boats on my java?
    this is such a neat program.
    there are double the number of integers on my boat.
    my boat can float.
   
   
   
   
    i think i should import my boat from sweden so it will float.
   
    lolz i have purple words. this is a purple word.

}

i have a question.

import javax.swing.*;

// The "Reverse" class.
public class encrytionmethod
{
    int len, i;
    char x;

    public static void main (String[] args)
    {
        String phrase = JOptionPane.showInputDialog ("Enter a phrase to be encrypted:");
        int len = word.length ();
        phrase.toUpperCase();
       
        for (int i = 0 ; i < len ; i++)
        {
       
            //phrase.charAt(i,i+1)
            char x = word.charAt(i);
           
            if (char x = 90)
            {
             char x = 65 ; 
            }
           
            System.out.print x);
        }
       
        System.out.println ();
    } // main method
} // encrytionmethod

this is my program. i get the error of '.class' expected what am i doing wrong? and how can i fix it?