Connect to https via j2me

J2me-https.java

import javax.microedition.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class HttpsConnectionExample extends MIDlet implements CommandListener {
    private Display display;
    private Form form;
    private StringItem resultItem;
    private Command exitCommand;
    private Command connectCommand;

    public HttpsConnectionExample() {
        display = Display.getDisplay(this);
        form = new Form("HTTPS Connection Example");
        resultItem = new StringItem("Result: ", "");
        exitCommand = new Command("Exit", Command.EXIT, 1);
        connectCommand = new Command("Connect", Command.SCREEN, 1);

        form.append(resultItem);
        form.addCommand(exitCommand);
        form.addCommand(connectCommand);
        form.setCommandListener(this);
    }

    public void startApp() {
        display.setCurrent(form);
    }

    public void pauseApp() {}

    public void destroyApp(boolean unconditional) {}

    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            destroyApp(false);
            notifyDestroyed();
        } else if (c == connectCommand) {
            new Thread(new Runnable() {
                public void run() {
                    connectHttps();
                }
            }).start();
        }
    }

    private void connectHttps() {
        HttpsConnection connection = null;
        InputStream is = null;
        try {
            connection = (HttpsConnection) Connector.open("https://api.example.com");
            connection.setRequestMethod(HttpsConnection.GET);

            int responseCode = connection.getResponseCode();
            if (responseCode == HttpsConnection.HTTP_OK) {
                is = connection.openInputStream();
                int length = (int) connection.getLength();
                byte[] data;
                if (length != -1) {
                    data = new byte[length];
                    is.read(data);
                } else {
                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    int ch;
                    while ((ch = is.read()) != -1) {
                        baos.write(ch);
                    }
                    data = baos.toByteArray();
                }
                final String response = new String(data);
                display.callSerially(new Runnable() {
                    public void run() {
                        resultItem.setText("Response: " + response);
                    }
                });
            } else {
                display.callSerially(new Runnable() {
                    public void run() {
                        resultItem.setText("HTTP Error: " + responseCode);
                    }
                });
            }
        } catch (final Exception e) {
            display.callSerially(new Runnable() {
                public void run() {
                    resultItem.setText("Error: " + e.toString());
                }
            });
        } finally {
            try {
                if (is != null) is.close();
                if (connection != null) connection.close();
            } catch (Exception e) {}
        }
    }
}