When I try to run/debug this code:
package ca.kianyarand.game;
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Dimension;
import javax.swing.JFrame;
public class Game extends Canvas implements Runnable {
private static final long serialVersionUID = 1L;
public static final int WIDTH = 160;
public static final int HEIGHT = WIDTH / 12*9;
public static final int SCALE =3;
public static final String NAME = "Game";
private JFrame frame;
public boolean running = false;
public Game(){
setMinimumSize(new Dimension(WIDTH*SCALE, HEIGHT*SCALE));
setMaximumSize(new Dimension(WIDTH*SCALE, HEIGHT*SCALE));
setPreferredSize(new Dimension(WIDTH*SCALE, HEIGHT*SCALE));
frame = new JFrame(NAME);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(this, BorderLayout.CENTER);
frame.pack();
frame.setResizable(false);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public synchronized void start() {
running = true;
new Thread(this).start();
}
public synchronized void stop() {
running = false;
}
public void run(){
while(running){
}
}
public static void name(String []args){
new Game().start();
}
}
It comes up with 'Selection does not contain an applet' when trying to run/debug it on a Java Applet and it also comes up with 'Selection does not contain a main type' when running with a Java Application.
Related
I use GreenDao to generate ContentProvider and when I trying to use it went wrong.it tell me "DaoSession must be set during content provider is active".I dont know where to set the DaoSession.
ContentProvider class as follows
public class ContactContentProvider extends ContentProvider {
public static final String AUTHORITY = "com.junsucc.www.provider";
public static final String BASE_PATH = "contact";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/" + BASE_PATH);
public static final String CONTENT_TYPE = ContentResolver.CURSOR_DIR_BASE_TYPE
+ "/" + BASE_PATH;
public static final String CONTENT_ITEM_TYPE = ContentResolver.CURSOR_ITEM_BASE_TYPE
+ "/" + BASE_PATH;
private static final String TABLENAME = ContactDao.TABLENAME;
private static final String PK = ContactDao.Properties.Id
.columnName;
private static final int CONTACT_DIR = 0;
private static final int CONTACT_ID = 1;
private static final UriMatcher sURIMatcher;
static {
sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);
sURIMatcher.addURI(AUTHORITY, BASE_PATH, CONTACT_DIR);
sURIMatcher.addURI(AUTHORITY, BASE_PATH + "/#", CONTACT_ID);
}
public DaoSession daoSession=BaseApplication.getDaoSession();
#Override
public boolean onCreate() {
// if(daoSession == null) {
// throw new IllegalStateException("DaoSession must be set before content provider is created");
// }
DaoLog.d("Content Provider started: " + CONTENT_URI);
return true;
}
protected SQLiteDatabase getDatabase() {
if (daoSession == null) {
throw new IllegalStateException("DaoSession must be set during content provider is active");
}
return daoSession.getDatabase();
}
......
the error as follow
java.lang.IllegalStateException: DaoSession must be set during content provider is active
at com.junsucc.www.ContactContentProvider.getDatabase(ContactContentProvider.java:71)
at com.junsucc.www.ContactContentProvider.insert(ContactContentProvider.java:83)
at android.content.ContentProvider$Transport.insert(ContentProvider.java:220)
at android.content.ContentResolver.insert(ContentResolver.java:1190)
at com.junsucc.junsucc.MD5UtilsTest.testProvider(MD5UtilsTest.java:58)
at java.lang.reflect.Method.invokeNative(Native Method)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)
but I had setted th DaoSession inside my Application
public class BaseApplication extends Application {
private static Context mContext;
private static DaoMaster mDaoMaster;
private static DaoSession mDaoSession;
public static DaoMaster getDaoMaster() {
return mDaoMaster;
}
public static Context getContext() {
return mContext;
}
#Override
public void onCreate() {
mContext = getApplicationContext();
DaoMaster.OpenHelper helper = new DaoMaster.DevOpenHelper(mContext, Constants.DB_NAME, null);
mDaoMaster = new DaoMaster(helper.getWritableDatabase());
mDaoSession = mDaoMaster.newSession();
super.onCreate();
}
}
Follow the advice of the framework
/**
* This must be set from outside, it's recommended to do this inside your Application object.
* Subject to change (static isn't nice).
*/
public static DaoSession daoSession;
In your applicaction code
#Override
public void onCreate() {
super.onCreate();
DaoMaster.OpenHelper helper = new DaoMaster.DevOpenHelper(this, Constants.DB_NAME, null);
mDaoMaster = new DaoMaster(helper.getWritableDatabase());
mDaoSession = mDaoMaster.newSession();
/***********************************************/
ContactContentProvider.daoSession = mDaoSession;
/***********************************************/
}
Because ContentProvider is created ahead of Application.
So daoSession will be null when ContentProvider created.
scenario : I am using data table with columns
one of the columns is link .
on run time I calculate the link created
the problem start when:
1. opennig table page P1
2. I clicked on link open in new tab
2.new tab is created with this URL
mit:8080/backoffice/?4-1.ILinkListener-MainPanelComponentWrapper-MainPanelComponent-table-gridForm-grid-body-rows-3-cells-2-cell-link
which is a component on P1 ,this tab generate P2.
changing P1 ,filtering on ajax and the table is empty so table-gridForm has no data
refreshing P2
getting exception
org.apache.wicket.WicketRuntimeException: Component 'MainPanelComponentWrapper:MainPanelComponent:table:gridForm:grid:body:rows:1:cells:2:cell:link' has been removed from page.
i need to create a redirected link that the new page woul be linked to .
how can i achive it ?
public class LinkPropertyColumn<T extends IEntity> extends BOPropertyColumn<T, String> implements IBOExportableColumn<T, String, Object> {
private static final long serialVersionUID = 1L;
private String headerTilte;
private GridViewType navigateTo;
private String routingByProperty;
private String entityId;
private String navigateToDynamicFunction;
private Map<String, String> filterByMap;
protected BOLinkPanel<T> linkPanel ;
public LinkPropertyColumn(String displayModel, String propertyToSortBy, String propertyExpression, String entityId,
String routingByProperty, String headerTilte, String navigateToDynamic) {
super(Model.of(displayModel), propertyToSortBy, propertyExpression);
this.headerTilte = headerTilte;
this.entityId = entityId;
this.navigateToDynamicFunction = navigateToDynamic;
this.routingByProperty = routingByProperty;
}
#Override
public Component getHeader(String componentId) {
return new Label(componentId, headerTilte);
}
#Override
public void populateItem(Item<ICellPopulator<T>> item, String componentId, final IModel<T> rowModel) {
linkPanel = new BOLinkPanel<T>(componentId, rowModel, getPropertyExpression()) {
private static final long serialVersionUID = 1L;
#Override
void onLinkClicked() {
LinkPropertyColumn.this.onLinkClicked(rowModel);
}
};
item.add(linkPanel);
}
public void onLinkClicked(IModel<T> rowModel) {
doing stuff...
params.add(HomePage.ENTITY_ID, idProperty);
final Object routingProperty = routingByProperty == null ? idProperty : BeanUtils.getProperty(object, routingByProperty);
params.set(HomePage.ROUTING_PROPERTY, routingProperty);
HomePage homePage = new HomePage(params);
final RequestCycle requestCycle = RequestCycle.get();
requestCycle.setResponsePage(homePage);
}
}
}
and :
public abstract class BOLinkPanel<T> extends Panel {
private static final long serialVersionUID = 1L;
/**
* #param id
*/
public BOLinkPanel(String id, IModel<T> model, String propertyExpression) {
super(id);
AbstractLink link = getLink();
link.add(new Label("caption", new PropertyModel<String>(model.getObject(), propertyExpression)));
add(link);
}
protected AbstractLink getLink() {
Link<Void> link = new AjaxFallbackLink<Void>("link") {
private static final long serialVersionUID = 1L;
#Override
public void onClick(AjaxRequestTarget target) {
// TODO Auto-generated method stub
BOLinkPanel.this.onLinkClicked();
}
// #Override
// public void onClick() {
// BOLinkPanel.this.onLinkClicked();
//
// }
};
return link;
}
abstract void onLinkClicked();
}
i did :
requestCycle.setResponsePage(HomePage.class, params);
I need to start a javafx Application from another "container" class and call functions on the Application, but there doesn't seem to be any way of getting hold of a reference to the Application started using the Application.launch() method. Is this possible?
Thanks
Suppose this is our JavaFX class:
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.stage.Stage;
public class OKButton extends Application {
#Override
public void start(Stage stage) {
Button btn = new Button("OK");
Scene scene = new Scene(btn, 200, 250);
stage.setTitle("OK");
stage.setScene(scene);
stage.show();
}
}
Then we may launch it from another class like this:
import javafx.application.Application;
public class Main {
public static void main(String[] args) {
Application.launch(OKButton.class, args);
}
}
I had the same problem as this and got round it using this hack:
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
import java.util.concurrent.CountDownLatch;
public class StartUpTest extends Application {
public static final CountDownLatch latch = new CountDownLatch(1);
public static StartUpTest startUpTest = null;
public static StartUpTest waitForStartUpTest() {
try {
latch.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
return startUpTest;
}
public static void setStartUpTest(StartUpTest startUpTest0) {
startUpTest = startUpTest0;
latch.countDown();
}
public StartUpTest() {
setStartUpTest(this);
}
public void printSomething() {
System.out.println("You called a method on the application");
}
#Override
public void start(Stage stage) throws Exception {
BorderPane pane = new BorderPane();
Scene scene = new Scene(pane, 500, 500);
stage.setScene(scene);
Label label = new Label("Hello");
pane.setCenter(label);
stage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
}
and then the class you are launching the application from:
public class StartUpStartUpTest {
public static void main(String[] args) {
new Thread() {
#Override
public void run() {
javafx.application.Application.launch(StartUpTest.class);
}
}.start();
StartUpTest startUpTest = StartUpTest.waitForStartUpTest();
startUpTest.printSomething();
}
}
Hope that helps you.
Launch JavaFX in other Class using Button:
class Main extends Application{
public void start(Stage s)throws Exception{
event();
s.show();
}
public void event(){
btn.setOnAction(new EventHandler<ActionEvent>(){
public void handle(ActionEvent ae){
Stage s = new Stage();
new SubClassName().start(s);
}
});
}
public static void main(String[] args) {
launch(args);
}
}
class SubClassName{
public void start(Stage s){
Pane pane = new Pane();
Scene addFrame = new Scene(pane,280,450);
s.setScene(addFrame);
s.show();
}
}
I'm not sure what you're trying to achieve, but note that you can e.g call from another class Application.launch to start the JavaFX Application thread and Platform.exit to stop it.
The above ways of invoking other javafx class from another sometimes work. Struggling to find an ultimate way to do this brought me to the following walk around:
Suppose this is the javafx class that exteds Application we wish to show from a different class, then we should add the following lines
class ClassToCall extends Application{
//Create a class field of type Shape preferably static...
static Stage classStage = new Stage();
#Override
public void start(Stage primaryStage){
// Assign the class's stage object to
// the method's local Stage object:
classStage = primaryStage ;
// Here comes some more code that creates a nice GUI.....
// ......
}
}
And now from the other place in the project, in order to open the window
that the above class creates do the following:
// Suppose we want to do it with a button clicked:
btn1.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
//create an object of the class you wish to invoke its
//start() method:
ClassToCall ctc = new ClassToCall();
// Then call its start() method in the following way:
ctc.start(ClassToCall.classStage);
}// End handle(ActionEvent event)
});// End anonymous class
I am trying to get a GXT 3 Grid running, but getting the following exception when running GWT compile form Eclipse:
java.lang.NullPointerException
at com.sencha.gxt.data.rebind.ModelKeyProviderCreator.getObjectType(ModelKeyProviderCreator.java:40)
Code to launch the grid and make it visible:
DataProperties dp = GWT.create(DataProperties.class);
List<ColumnConfig<MyGridData, ?>> css = new LinkedList<ColumnConfig<MyGridData, ?>>();
css.add(new ColumnConfig<MyGridData, String>(dp.name(), 200, "Name"));
css.add(new ColumnConfig<MyGridData, String>(dp.value(), 200, "Value"));
ColumnModel<MyGridData> cm = new ColumnModel<MyGridData>(css);
ListStore<MyGridData> s = new ListStore<MyGridData>(dp.key());
s.add(new MyGridData("name1","value1"));
s.add(new MyGridData("name2","value2"));
s.add(new MyGridData("name3","value3"));
s.add(new MyGridData("name4","value4"));
Grid<MyGridData> g = new Grid<MyGridData>(s, cm);
addToDisplay(g);
the grid data bean:
public class MyGridData{
private String name;
private String value;
public MyGridData(String name, String value) {
super();
this.name = name;
this.value = value;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return this.name;
}
public void setValue(String value) {
this.value = value;
}
public String getValue() {
return this.value;
}
}
The supporting DataProperties class:
import com.google.gwt.editor.client.Editor.Path;
import com.sencha.gxt.core.client.ValueProvider;
import com.sencha.gxt.data.shared.ModelKeyProvider;
import com.sencha.gxt.data.shared.PropertyAccess;
public interface DataProperties extends PropertyAccess {
#Path("name")
ModelKeyProvider key();
ValueProvider<MyGridData, String> name();
ValueProvider<MyGridData, String> value();
}
From your code:
public interface DataProperties extends PropertyAccess {
#Path("name")
ModelKeyProvider key();
ValueProvider<MyGridData, String> name();
ValueProvider<MyGridData, String> value();
}
You've got an error here - without generics, the compiler can't figure out what you need. Your IDE should be warning you about your raw use of both ProperyAccess and ModelKeyProvider. Both of those need to refer to MyGridData. Try this instead:
public interface DataProperties extends PropertyAccess<MyGridData> {//here
#Path("name")
ModelKeyProvider<MyGridData> key();// and here
ValueProvider<MyGridData, String> name();
ValueProvider<MyGridData, String> value();
}
I am trying to get a box to move in a JFrame by repainting it, but for some reason i cannot figure out it will not work. I know its probably something really stupid but here are my classes: (also sorry for the formatting its a pain in the ass...) It gives me an error on the frame.add(square) line.
import javax.swing.JFrame;
import javax.swing.WindowConstants;
public class Runner extends JFrame{
final static int FRAME_WIDTH = 1000;
final static int FRAME_HEIGHT = 600;
final static int BOX_WIDTH = 50;
final static int BOX_HEIGHT = 50;
public static void main (String[] args){
JFrame frame = new JFrame();
frame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
frame.setTitle("Animation");
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame.setVisible(true);
Component square = new Component();
Dimensions.setBoxDimensions(BOX_WIDTH, BOX_HEIGHT);
frame.add(square);
frame.setVisible(true);
for (int i = 0; i < 100; i++){
Dimensions.setPosition(i,i);
square.repaint();
frame.setVisible(true);
}
}
}
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
public class Component extends JFrame{
public void paintComponent (Graphics g){
Graphics2D g2 = (Graphics2D) g;
g2.fillRect(Dimensions.xPos, Dimensions.yPos, Dimensions.boxWidth, Dimensions.boxHeight);
}
}
public class Dimensions {
public static int boxHeight = 50;
public static int boxWidth = 50;
public static int xPos = 0;
public static int yPos = 0;
public static void setBoxDimensions(int width, int height){
boxHeight = height;
boxWidth = width;
}
public static void setPosition(int x, int y){
xPos = x;
yPos = y;
}
}
Since your component class is a JFrame you cannot add teh JFrame to a JFrame. You may want to add a JPanel to the JFrame and paint on the JPanel instead.
Or you may be intending to extend java.awt.Component instead?
import javax.swing.JPanel;
public class MyComponent extends JPanel{
public void paintComponent (Graphics g){
Graphics2D g2 = (Graphics2D) g;
g2.fillRect(Dimensions.xPos, Dimensions.yPos, Dimensions.boxWidth, Dimensions.boxHeight);
}
}
And when you want a Component you can do this:
JPanel square = new MyComponent();
It's better to override the "paint" method in your JFrame. It's much easier to do.
#override
public void paint(Graphics g){
super();
/*
put the code to draw your shape of shapes here
*/
}
You can call repaint method of your JFrame whenever you want to update your JFrame.