HI sir
I AM SASINDRAN newcomer to gwt i wrote a example(StockWatcher) project
provided by google.When I build this project in development mode using
eclipse IDE.This shows an error "[ERROR] [stockwatchers] - Uncaught
exception escaped"
PROJECT CODE
********************
package com.google.gwt.sample.stockwatchers.client;
import java.util.ArrayList;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.user.client.Random;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.i18n.client.NumberFormat;
import java.util.Date;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class StockWatchers implements EntryPoint {
/**
* The message displayed to the user when the server cannot be
reached or
* returns an error.
*/
private static final String SERVER_ERROR = "An error occurred while "
+ "attempting to contact the server. Please check your
network "
+ "connection and try again.";
/**
* Create a remote service proxy to talk to the server-side Greeting
service.
*/
private final GreetingServiceAsync greetingService = GWT
.create(GreetingService.class);
VerticalPanel mainPanel = new VerticalPanel();
HorizontalPanel addPanel = new HorizontalPanel();
TextBox newSymbolTextBox = new TextBox();
Button addStockButton = new Button("Add");
private ArrayList<String> stocks=new ArrayList<String>();
FlexTable stockFlexTable = new FlexTable();
private static final int REFRESH_INTERVAL=5000;
Label lastUpdateLabel = new Label("");
/**
* This is the entry point method.
*/
public void onModuleLoad() {
// Add the nameField and sendButton to the RootPanel
// Use RootPanel.get() to get the entire body element
RootPanel.get("stockList").add(mainPanel);
mainPanel.add(stockFlexTable);
mainPanel.add(addPanel);
addPanel.add(newSymbolTextBox);
addPanel.add(addStockButton);
mainPanel.add(lastUpdateLabel);
stockFlexTable.setText(0,0,"Symbol");
stockFlexTable.setText(0,1,"Price");
stockFlexTable.setText(0,2,"Change");
stockFlexTable.setText(0,3,"Remove");
newSymbolTextBox.setFocus(true);
addStockButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
// TODO Auto-generated method stub
addStock();
}
});
newSymbolTextBox.addKeyPressHandler(new KeyPressHandler() {
@Override
public void onKeyPress(KeyPressEvent event) {
// TODO Auto-generated method stub
if(event.getCharCode()==KeyCodes.KEY_ENTER)
{
addStock();
}
}
});
/* Timer refreshTimer=new Timer() {
@Override
public void run() {
// TODO Auto-generated method stub
refreshWatchList();
}
};*/
lastUpdateLabel.setText("Last
update :"+DateTimeFormat.getMediumDateTimeFormat().format(new
Date()));
//refreshTimer.scheduleRepeating(REFRESH_INTERVAL);
}
private void addStock()
{
final String
symbol=newSymbolTextBox.getText().toUpperCase().trim();
if(stocks.contains(symbol))
return;
newSymbolTextBox.setFocus(true);
if(!symbol.matches("^[0-9A-Z\\.]{1,10}$"))
{
Window.alert("'" + symbol + "' is not a valid symbol.");
newSymbolTextBox.selectAll();
newSymbolTextBox.setText("");
return;
}
int row=stockFlexTable.getRowCount();
stocks.add(symbol);
stockFlexTable.setText(row,0,symbol);
refreshWatchList();
Button removeButton=new Button("X");
removeButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
// TODO Auto-generated method stub
int index=stocks.indexOf(symbol);
stocks.remove(index);
stockFlexTable.removeRow(index+1);
}
});
stockFlexTable.setWidget(row, 3,removeButton);
//newSymbolTextBox.setText("");
}
private void refreshWatchList()
{
final double MAX_PRICE=100.0;
final double MAX_PRICE_CHANGE=0.02;
StockPrice[] prices=new StockPrice[stocks.size()];
for(int i=0;i<stocks.size();i++)
{
double price=Random.nextDouble()*MAX_PRICE;
double
change=price*MAX_PRICE_CHANGE*(Random.nextDouble()*2.0-1.0);
prices[i]=new StockPrice(stocks.get(i),price,change);
}
updateTable(prices);
}
private void updateTable(StockPrice[] prices)
{
for(int i=0;i<prices.length;i++)
{
updateTable(prices[i]);
}
}
private void updateTable(StockPrice price)
{
if(!stocks.contains(price.getSymbol()))
{
return;
}
int row=stocks.indexOf(price.getSymbol())+1;
String priceText=NumberFormat.getFormat("#,##.
0.00").format(price.getPrice());
NumberFormat changeFormat=NumberFormat.getFormat("+#,##0.00;-
#,##0.00");
String changeText=changeFormat.format(price.getChange());
String
changePercentText=changeFormat.format(price.getChangePercent());
stockFlexTable.setText(row, 1,priceText);
stockFlexTable.setText(row,2,changeText.toString()
+"("+changePercentText.toString()+"%)");
}
}
*********************************
19:02:48.734 [ERROR] [stockwatchers] Uncaught exception escaped
com.google.gwt.event.shared.UmbrellaException: One or more exceptions
caught, see full set in UmbrellaException#getCauses
at
com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:
129)
at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:124)
at
com.google.gwt.event.dom.client.DomEvent.fireNativeEvent(DomEvent.java:
116)
at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:
172)
at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1321)
at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1277)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
167)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:
326)
at
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:
207)
at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
132)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
561)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
269)
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:
91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214)
at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
167)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:
281)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
531)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
352)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalArgumentException: Multiple decimal
separators in pattern "#,##.0.00"
at
com.google.gwt.i18n.client.NumberFormat.parseTrunk(NumberFormat.java:
1564)
at
com.google.gwt.i18n.client.NumberFormat.parsePattern(NumberFormat.java:
1501)
at com.google.gwt.i18n.client.NumberFormat.<init>
(NumberFormat.java:774)
at com.google.gwt.i18n.client.NumberFormat.<init>
(NumberFormat.java:790)
at
com.google.gwt.i18n.client.NumberFormat.getFormat(NumberFormat.java:
422)
at
com.google.gwt.sample.stockwatchers.client.StockWatchers.updateTable(StockWatchers.java:
206)
at
com.google.gwt.sample.stockwatchers.client.StockWatchers.updateTable(StockWatchers.java:
191)
at
com.google.gwt.sample.stockwatchers.client.StockWatchers.refreshWatchList(StockWatchers.java:
183)
at
com.google.gwt.sample.stockwatchers.client.StockWatchers.addStock(StockWatchers.java:
148)
at com.google.gwt.sample.stockwatchers.client.StockWatchers.access
$0(StockWatchers.java:130)
at com.google.gwt.sample.stockwatchers.client.StockWatchers
$1.onClick(StockWatchers.java:100)
at
com.google.gwt.event.dom.client.ClickEvent.dispatch(ClickEvent.java:
54)
at
com.google.gwt.event.dom.client.ClickEvent.dispatch(ClickEvent.java:1)
at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:1)
at
com.google.web.bindery.event.shared.SimpleEventBus.doFire(SimpleEventBus.java:
193)
at
com.google.web.bindery.event.shared.SimpleEventBus.fireEvent(SimpleEventBus.java:
88)
at
com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:
127)
at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:124)
at
com.google.gwt.event.dom.client.DomEvent.fireNativeEvent(DomEvent.java:
116)
at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:
172)
at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1321)
at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1277)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
167)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:
326)
at
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:
207)
at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
132)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
561)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
269)
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:
91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214)
at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
167)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:
281)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
531)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
352)
at java.lang.Thread.run(Thread.java:619)
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