选项菜单未显示

Question

我正在尝试在我的某个活动中创建一个选项菜单。当我运行应用程序时，我没有看到任何选项菜单。我试图搜索如何让它出现，但找不到任何东西。这是我的代码

    package com.exaple.josh.unidrive;
import android.app.Activity;
import android.os.Bundle;
import android.view.MenuInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

/**
 * Created by Josh on 1/31/2015.
 */


public class Documents extends Activity {

    EditText et;
    EditText txtView;
    private String data;
    private String file = "mydata";

    private Menu menuresource;


    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menuresource, (android.view.Menu) menu);
        return true;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.documents);
    }


    public void save(View view) {
        data = et.getText().toString();
        try {
            FileOutputStream fOut = openFileOutput(file, MODE_PRIVATE);
            fOut.write(data.getBytes());
            fOut.close();
            Toast.makeText(getBaseContext(), "file saved",
                    Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public void open(View view) {
        try {
            FileInputStream fin = openFileInput(file);
            int c;
            String temp = "";
            while ((c = fin.read()) != -1) {
                temp = temp + Character.toString((char) c);
            }
            et.setText(temp);
            Toast.makeText(getBaseContext(), "file read", Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
} 

有人可以帮忙吗？