William H Taylor

I understand, thank you very much.

private class WeatherTask extends AsyncTask<String, Void, Weather> {
@Override
protected Weather doInBackground(String... params) {


I got these two questions about the asynctask three types in one and the string ... parameters, I never saw these before. Can someone explain it to me. I was reading through java code and I don't know how to look these up. I think they are Generics but I never saw generics with three types. I also never saw java with a variable set of method parameters. I appreciate the help.

I am planning a JSP site that is connected to a database. The title, the heading tags, and content are all to be pulled from a database. I need to be able to make this site searchable by Google and I don't know how. I don't even know how to search for the answer. How do I make a data driven JSP site searchable by Google like a blog would be? I need it so that each returned JSP page can show up in a Google search results page. Thanks.

I am new to java programming. I am trying to implement a java servlet that processes google in app payments. I am trying to work my way through the code snippet that they provided. The code they have verbatim is below. My first question is how do I set up the servlet? Do I put a call in the doPost method of the servlet? If I leave it outside, the container wont call it right? What calls the getJWT() method? Third what do I do with the String that the method returns?

Here is the getting started page: https://developers.google.com/in-app-payments/docs/tutorial

private String getJWT() throws InvalidKeyException, SignatureException { JsonToken token = null; token = createToken(); return token.serializeAndSign(); } private JsonToken createToken() throws InvalidKeyException{ //Current time and signing algorithm Calendar cal = Calendar.getInstance(); HmacSHA256Signer signer = new HmacSHA256Signer(ISSUER, null, SIGNING_KEY.getBytes()); //Configure JSON token JsonToken token = new JsonToken(signer); token.setAudience("Google"); token.setParam("typ", "google/payments/inapp/item/v1"); token.setIssuedAt(new Instant(cal.getTimeInMillis())); token.setExpiration(new Instant(cal.getTimeInMillis() + 60000L)); //Configure request object JsonObject request = new JsonObject(); request.addProperty("name", "Piece of Cake"); request.addProperty("description", "Virtual chocolate cake to fill your virtual tummy"); request.addProperty("price", "10.50"); request.addProperty("currencyCode", "USD"); request.addProperty("sellerData", "user_id:1224245,offer_code:3098576987,affiliate:aksdfbovu9j"); JsonObject payload = token.getPayloadAsJsonObject(); payload.add("request", request); return token; }

I find the in app billing app beyond my present skills. Does anyone know of a good tutorial that includes all of the source code for a simple in app billing program. I find myself completely confused by the sample program.

I am making a chatbot for android for fun and I get this runtime exception. If anyone can help with this I appreciate it. The log cat message suggests an unassigned object variable somewhere but I don't know where it is.

The log cat message is

12-28 23:32:27.143: D/AndroidRuntime(337): Shutting down VM
12-28 23:32:27.143: W/dalvikvm(337): threadid=1: thread exiting with uncaught exception (group=0x40015560)
12-28 23:32:27.173: E/AndroidRuntime(337): FATAL EXCEPTION: main
12-28 23:32:27.173: E/AndroidRuntime(337): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.wtaylorjr2001.practice/com.wtaylorjr2001.practice.PracticeActivity}: java.lang.NullPointerException
12-28 23:32:27.173: E/AndroidRuntime(337): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.os.Handler.dispatchMessage(Handler.java:99)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.os.Looper.loop(Looper.java:123)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.app.ActivityThread.main(ActivityThread.java:3683)
12-28 23:32:27.173: E/AndroidRuntime(337): at java.lang.reflect.Method.invokeNative(Native Method)
12-28 23:32:27.173: E/AndroidRuntime(337): at java.lang.reflect.Method.invoke(Method.java:507)
12-28 23:32:27.173: E/AndroidRuntime(337): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-28 23:32:27.173: E/AndroidRuntime(337): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-28 23:32:27.173: E/AndroidRuntime(337): at dalvik.system.NativeStart.main(Native Method)
12-28 23:32:27.173: E/AndroidRuntime(337): Caused by: java.lang.NullPointerException
12-28 23:32:27.173: E/AndroidRuntime(337): at com.wtaylorjr2001.practice.PracticeActivity.onCreate(PracticeActivity.java:24)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-28 23:32:27.173: E/AndroidRuntime(337): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-28 23:32:27.173: E/AndroidRuntime(337): ... 11 more


Thread [<1> main] (Suspended (exception RuntimeException))
ActivityThread.performLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1647
ActivityThread.handleLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1663
ActivityThread.access$1500(ActivityThread, ActivityThread$ActivityClientRecord, Intent) line: 117
ActivityThread$H.handleMessage(Message) line: 931
ActivityThread$H(Handler).dispatchMessage(Message) line: 99
Looper.loop() line: 123
ActivityThread.main(String[]) line: 3683
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 507
ZygoteInit$MethodAndArgsCaller.run() line: 839
ZygoteInit.main(String[]) line: 597
NativeStart.main(String[]) line: not available [native method]
package com.wtaylorjr2001.practice; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.AutoCompleteTextView; import android.widget.Button; import android.widget.TextView; public class PracticeActivity extends Activity { /** Called when the activity is first created. */ ChatBrain chatBrain; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); chatBrain = new ChatBrain(); final AutoCompleteTextView usersSubmissions = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1); final TextView textView = (TextView)findViewById(R.id.textView1); Button button = (Button)findViewById(R.id.button1); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { textView.setText(chatBrain.think(usersSubmissions.getText().toString())); } }); setContentView(R.layout.main); } }

Thanks the program does work now but it has a serious problem. The size of the file on the sdcard continuosly increases. There are no error messages.This program seems to be eating up memory.



package wtaylorjr2001.thestargods; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.widget.TextView; import java.io.File; import java.io.IOException; import java.io.FileOutputStream; import java.io.OutputStreamWriter; import android.content.res.AssetManager; import java.io.InputStream; public class TheStarGodsActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TextView textView = new TextView(this); setContentView(textView); InputStream in; FileOutputStream f; byte[] buffer; int size = 0; int len; AssetManager assetManager = getAssets(); File sdCard = Environment.getExternalStorageDirectory(); File dir = new File (sdCard.getAbsolutePath() + "/Twisty"); dir.mkdirs(); File file = new File(dir, "test.z8"); try{ f = new FileOutputStream(file); in = assetManager.open("test.z8"); buffer = new byte[1024]; while ((len = in.read(buffer, 0, size)) != -1){ f.write(in.read()); } f.flush(); f.close(); in.close(); } catch(IOException e){ } } }

Latest try still not working, the emulator says there is only 1 byte in the file and There is more than that.


package wtaylorjr2001.thestargods; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.widget.TextView; import java.io.File; import java.io.IOException; import java.io.FileOutputStream; import java.io.OutputStreamWriter; import android.content.res.AssetManager; import java.io.InputStream; public class TheStarGodsActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TextView textView = new TextView(this); setContentView(textView); InputStream in; FileOutputStream f; byte[] buffer; int size = 0; int len; AssetManager assetManager = getAssets(); File sdCard = Environment.getExternalStorageDirectory(); File dir = new File (sdCard.getAbsolutePath() + "/Twisty"); dir.mkdirs(); File file = new File(dir, "test.z8"); try{ f = new FileOutputStream(file); in = assetManager.open("test.z8"); size = in.available(); buffer = new byte[size]; while ((len = in.read(buffer, 0, size)) != -1){ f.write(in.read()); } } catch(IOException e){ } } }

I halfway solved the problem. The problem is that with this code I am reading and writing one byte of the z8 file and I don''t know what to do about it. This is my code.

package wtaylorjr2001.thestargods; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.widget.TextView; import java.io.File; import java.io.IOException; import java.io.FileOutputStream; import java.io.OutputStreamWriter; import android.content.res.AssetManager; import java.io.InputStream; public class TheStarGodsActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TextView textView = new TextView(this); setContentView(textView); InputStream in; FileOutputStream f; AssetManager assetManager = getAssets(); File sdCard = Environment.getExternalStorageDirectory(); File dir = new File (sdCard.getAbsolutePath() + "/Twisty"); dir.mkdirs(); File file = new File(dir, "test.z8"); try{ f = new FileOutputStream(file); in = assetManager.open("test.z8"); f.write(in.read()); } catch(IOException e){ } } }

I am writing an interactive story. It is a z8 file that is readable by zcode interpreters. I am trying to write a program that embeds the z8 file in an apk. The program will look into the users phone to see if it has twisty, a free zcode interpreter, and notify the user that an interpreter is needed if one is not found. It will take the z8 file and load it onto the sdcard. I need an example or a tutorial of how to load a binary file onto the android sdcard. Thank you for your help and time.

Thank you Sohaib, I think that this will work.

I want to have the user input a string into a textfield, retrieve the text from the textfield, process it and return another string to a text view object. I don't know how to do this. Can someone either point me to a tutorial, or post some code. I have searched google but I am not trying to create a new input class, I am trying to figure out how to modify the android manifest and extend an activity that uses a textview. Thanks.

Java has a network api where you can put together a simple server using the server socket class. My question is do you just need an active jvm to run it? How do you go about finding a host for something like that? You would not use servlets and tomcat because it is a server already right?

Thank you the validate and repaint worked. I wasn't sure where to place the question, sorry about that.

Hello,

Can anyone tell me how to get an image to display without having to resize the java applet first. I wrote a program to display an image but the image wont display unless I resize the web page or the applet viewer. Thank you for your time. I am using java 6 on a vista 64 box. I used the paintComponent method with the imageicon painticon method.

public class PhotoPanel extends JPanel{
ClassLoader cldr = getClass().getClassLoader();
String file = "sausages2.jpg";
URL fileName = cldr.getResource(file);
ImageIcon icon = new ImageIcon(fileName);
public PhotoPanel(String aFileName){
super();
file = aFileName;

}
public void paintComponent(Graphics g){
super.paintComponent(g);
icon.paintIcon(this, g, 0, 0);
}
}