only null as output stuck

Question

I need null for the if statement in output in the main method but it comes up as only null and not showing the actual string I am lost on what is wrong uri(s) has the string input and when calling methods it is still coming up as null so nothing happens

public class URI {
    private String uri, scheme, authority, path, query, fragment, userInfo, host, hp;
    private int port;

    public URI(String uri) {
        uri = "abc://username:[email protected]:123/path/data?key=vale&key2=value2#fradid1";
    }

    /*
     * Method: getScheme
     * 
     * @Param String Purpose : pull out the scheme from uri string
     * 
     * @Return: String
     */
    public String getScheme(String uri) {
        scheme = uri.substring(0, uri.indexOf(":"));
        return scheme;

    }

    /*
     * Method: getAuthority
     * 
     * @param String purpose: to pull out authority from the uri string
     * 
     * @Return: String
     */
    public String getAuthority(String uri) {
        authority = uri.substring(uri.indexOf("//"), uri.indexOf("/"));
        return authority;

    }

    /*
     * Method: getPath
     * 
     * @param String purpose : to pull out path from uri string return string
     */
    public String getPath(String uri) {
        hp = uri.substring(uri.indexOf("@"),uri.indexOf("?"));
        path = hp.substring(hp.indexOf("/"), hp.indexOf("?"));
        return path;

    }

    /*
     * Method:getPath
     * 
     * @param String Purpose: tp pull out path from the uri string
     * 
     * @Return: String
     */
    public String getQuery(String uri) {
        query = uri.substring(uri.indexOf("?"), uri.indexOf("#"));
        return query;
    }

    /*
     * Method:getFragment
     * 
     * @param String Purpose: to pull out Fragment from uri String
     * 
     * @Return: String
     */
    public String getFragment(String uri) {
        fragment = uri.substring(uri.indexOf("#"));
        return fragment;

    }

    /*
     * Method:getUserInfo
     * 
     * @Param String Purpose: to pull out user info from uri String
     * 
     * @Return String
     */
    public String getUserInfo(String uri) {
        userInfo = uri.substring(uri.indexOf("//"), uri.indexOf("@"));
        return userInfo;

    }

    /*
     * Method:getHost
     * 
     * @param String Purpose: to pull out host from uri string
     * 
     * @return String
     */
    public String getHost(String uri) {
        hp = uri.substring(uri.indexOf("@"),uri.indexOf("?"));

        host = hp.substring(hp.indexOf("@"), hp.lastIndexOf(":"));
        return host;

    }

    /*
     * Method getPort
     * 
     * @param String Purpose: to pull out port from uri
     * 
     * @return String
     */
    public int getPort(String uri) {
        hp = uri.substring(uri.indexOf("@"),uri.indexOf("?"));
        port = Integer.parseInt(hp.substring(hp.lastIndexOf(":"), hp.indexOf(":")));
        return port;

    }

    /*
     * Method: toString
     * 
     * @param String Purpose :return uri as a string
     */
    public String toString() {
        return "The Scheme is: " + getScheme(uri) + "\nThe authority is:" + getAuthority(uri) + "\nThe host is:"
                + getHost(uri) + "\nThe path is:" + getPath(uri) + "\nThe query is: " + getQuery(uri)
                + "\nThe fragment is:" + getFragment(uri) + "\nThe port is:" + getPort(uri)
                + "\nThe user information is:" + getUserInfo(uri);

    }

    
    
}



        import java.io.File;
        import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;

        public class Project2App {

            public static void main(String[] args) throws IOException {
                    // Create a variable to store each line read from the file
                    String s = "";
                    
                    // Connect the scanner to a file in the specified path
                    Scanner in = new Scanner(new File("uri"));
                    
                    //As long as there are more lines to read
                    while (in.hasNextLine()) {
                        // read a line and store it in a String variable
                        s = in.nextLine();          
                        
                        // create a URI from the string
                        URI uri = new URI(s);
                        /*
                        // call the output method and pass the URI to it
                         */
                        output(uri);
                    
                    // Close the Scanner
                      
                    
                    }
                    in.close();
            }
            
        
            /*
             * This method outputs the components of an URI
             */
            
                        System.out.println(uri);
            if (uri.getScheme(uri.toString()) != null)
            System.out.println("\tThe scheme is:    " + uri.getScheme(uri.toString()));
            if (uri.getAuthority(uri.toString())!= null)
                System.out.println("\tThe authority is: " + uri.getAuthority(uri.toString()));
            if (uri.getHost(uri.toString()) != null)
                System.out.println("\tThe host is:      " + uri.getHost(uri.toString()));
            if (uri.getPort(uri.toString()) > 0)
                System.out.println("\tThe port is:      " + uri.getPort(uri.toString()));
            if (uri.getPath(uri.toString()) != null)
                System.out.println("\tThe path is:      " + uri.getPath(uri.toString()));
            if (uri.getUserInfo(uri.toString()) != null)
                System.out.println("\tThe user information is:   " + uri.getUserInfo(uri.toString()));
            if (uri.getQuery(uri.toString()) != null)
                System.out.println("\tThe query is:     " + uri.getQuery(uri.toString()));
            if (uri.getFragment(uri.toString()) != null)
                System.out.println("\tThe fragment is:  " + uri.getFragment(uri.toString()));
            System.out.println();

        }
            }

TEXT FILE FOR INPUT

uri.txt

is file of different uri's with multiple variations to test each method