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在Java中使用本地HTTPS URL，需要遵循以下步骤：

生成SSL证书：首先需要生成一个SSL证书，用于在本地HTTPS服务器上加密数据传输。可以使用Java内置的keytool工具生成自签名证书。

keytool -genkey -keyalg RSA -alias selfsigned -keystore keystore.jks -storepass password -validity 360 -keysize 2048 -storetype jks

创建HTTPS服务器：使用Java内置的HttpsServer类创建HTTPS服务器，并将生成的SSL证书添加到服务器中。

import com.sun.net.httpserver.HttpsServer;
import com.sun.net.httpserver.HttpsConfigurator;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLParameters;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.security.KeyStore;

public class HttpsServerExample {
    public static void main(String[] args) throws Exception {
        HttpsServer server = HttpsServer.create(new InetSocketAddress(8000), 0);
        SSLContext sslContext = getSSLContext("keystore.jks", "password");
        server.setHttpsConfigurator(new HttpsConfigurator(sslContext) {
            public void configure(HttpsParameters params) {
                SSLParameters sslParams = getSSLContext().getDefaultSSLParameters();
                params.setSSLParameters(sslParams);
            }
        });
        server.createContext("/", new MyHandler());
        server.start();
        System.out.println("Server started at https://localhost:8000/");
    }

    private static SSLContext getSSLContext(String keyStoreFile, String password) throws Exception {
        FileInputStream fis = new FileInputStream(keyStoreFile);
        KeyStore ks = KeyStore.getInstance("JKS");
        ks.load(fis, password.toCharArray());
        KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
        kmf.init(ks, password.toCharArray());
        SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(kmf.getKeyManagers(), null, null);
        return sslContext;
    }

    static class MyHandler implements HttpHandler {
        public void handle(HttpExchange t) throws IOException {
            String response = "Hello world!";
            t.sendResponseHeaders(200, response.length());
            OutputStream os = t.getResponseBody();
            os.write(response.getBytes());
            os.close();
        }
    }
}