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PO"Multiple markers at this line"
 

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  1. PO"Multiple markers at this line"
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    <p>I'm following the <a href="http://code.google.com/webtoolkit/doc/latest/tutorial/create.html" rel="nofollow">Stockwatcher</a> tutorial.</p> <p>When I try to run it I'm getting this error?: "Multiple markers at this line" (I have added a comment in that line below).</p> <pre><code>package com.google.gwt.sample.stockwatcher.client; import com.google.gwt.core.client.EntryPoint; 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.i18n.client.NumberFormat; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.FlexTable; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.Random; import com.google.gwt.user.client.Timer; import com.google.gwt.user.client.Window; import java.util.ArrayList; public class StockWatcher implements EntryPoint { private static final int REFRESH_INTERVAL = 5000; private VerticalPanel mainPanel = new VerticalPanel(); private FlexTable stocksFlexTable = new FlexTable(); private HorizontalPanel addPanel = new HorizontalPanel(); private TextBox newSymbolTextBox = new TextBox(); private Button addStockButton = new Button("Add"); private Label lastUpdatedLabel = new Label(); private ArrayList&lt;String&gt; stocks = new ArrayList&lt;String&gt;(); /** * Entry point method. */ public void onModuleLoad() { // Create table for stock data. stocksFlexTable.setText(0, 0, "Symbol"); stocksFlexTable.setText(0, 1, "Price"); stocksFlexTable.setText(0, 2, "Change"); stocksFlexTable.setText(0, 3, "Remove"); // Assemble Add Stock panel. addPanel.add(newSymbolTextBox); addPanel.add(addStockButton); // Assemble Main panel. mainPanel.add(stocksFlexTable); mainPanel.add(addPanel); mainPanel.add(lastUpdatedLabel); // Associate the Main panel with the HTML host page. RootPanel.get("stockList").add(mainPanel); // Move cursor focus to the input box. newSymbolTextBox.setFocus(true); // Setup timer to refresh list automatically. Timer refreshTimer = new Timer() { @Override public void run() { refreshWatchList(); } }; refreshTimer.scheduleRepeating(REFRESH_INTERVAL); //THIS IS THE LINE OF THE // Listen for mouse events on the Add button. addStockButton.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { addStock(); } }); // Listen for keyboard events in the input box. newSymbolTextBox.addKeyPressHandler(new KeyPressHandler() { public void onKeyPress(KeyPressEvent event) { System.out.println("foo=" + KeyCodes.KEY_ENTER); System.out.println("bar=" + (int)event.getCharCode()); if (event.getCharCode() == KeyCodes.KEY_ENTER) { addStock(); } } }); } /** * Add stock to FlexTable. Executed when the user clicks the addStockButton or * presses enter in the newSymbolTextBox. */ private void addStock() { final String symbol = newSymbolTextBox.getText().toUpperCase().trim(); newSymbolTextBox.setFocus(true); // Stock code must be between 1 and 10 chars that are numbers, letters, or dots. if (!symbol.matches("^[0-9A-Z\\.]{1,10}$")) { Window.alert("'" + symbol + "' is not a valid symbol."); newSymbolTextBox.selectAll(); return; } newSymbolTextBox.setText(""); // Don't add the stock if it's already in the table. if (stocks.contains(symbol)) return; // Add the stock to the table. int row = stocksFlexTable.getRowCount(); stocks.add(symbol); stocksFlexTable.setText(row, 0, symbol); // Add a button to remove this stock from the table. Button removeStockButton = new Button("x"); removeStockButton.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { int removedIndex = stocks.indexOf(symbol); stocks.remove(removedIndex); stocksFlexTable.removeRow(removedIndex + 1); } }); stocksFlexTable.setWidget(row, 3, removeStockButton); // Get the stock price. refreshWatchList(); } private void refreshWatchList() { final double MAX_PRICE = 100.0; // $100.00 final double MAX_PRICE_CHANGE = 0.02; // +/- 2% StockPrice[] prices = new StockPrice[stocks.size()]; for (int i = 0; i &lt; 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); } /** * Update the Price and Change fields all the rows in the stock table. * * @param prices Stock data for all rows. */ private void updateTable(StockPrice[] prices) { for (int i = 0; i &lt; prices.length; i++) { updateTable(prices[i]); } } /** * Update a single row in the stock table. * * @param price Stock data for a single row. */ private void updateTable(StockPrice price) { // Make sure the stock is still in the stock table. if (!stocks.contains(price.getSymbol())) { return; } int row = stocks.indexOf(price.getSymbol()) + 1; // Format the data in the Price and Change fields. 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()); // Populate the Price and Change fields with new data. stocksFlexTable.setText(row, 1, priceText); stocksFlexTable.setText(row, 2, changeText + " (" + changePercentText + "%)"); } } </code></pre> <p>This is the stack of errors:</p> <pre><code>StockWatcher [Web Application] com.google.gwt.dev.DevMode at localhost:56938 Thread [main] (Running) Thread [Thread-1] (Running) Daemon Thread [Thread-2] (Running) Daemon Thread [UnitWriteThread] (Running) Daemon Thread [Timer-0] (Running) Daemon Thread [Code server listener] (Running) Daemon Thread [com.google.gwt.thirdparty.guava.common.base.internal.Finalizer] (Running) Thread [2048426764@qtp-774727454-1 - Acceptor0 SelectChannelConnector@0.0.0.0:8888] (Running) Thread [2108438076@qtp-774727454-0] (Running) Daemon Thread [Timer-1] (Running) Daemon Thread [Code server for stockwatcher from Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1 on http://127.0.0.1:8888/StockWatcher.html?gwt.codesvr=127.0.0.1:9997 @ 1hS?FL4(4E4"'T^J] (Suspended (breakpoint at line 67 in StockWatcher)) StockWatcher.onModuleLoad() line: 67 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] NativeMethodAccessorImpl.invoke(Object, Object[]) line: 57 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43 Method.invoke(Object, Object...) line: 601 ModuleSpaceOOPHM(ModuleSpace).onLoad(TreeLogger) line: 396 OophmSessionHandler.loadModule(BrowserChannelServer, String, String, String, String, String, byte[]) line: 200 BrowserChannelServer.processConnection() line: 525 BrowserChannelServer.run() line: 363 Thread.run() line: 722 /usr/lib/jdk1.7.0_01/bin/java (Nov 22, 2011 12:45:50 PM) </code></pre> <p>Javi</p>
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      1. PO"Multiple markers at this line"
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      1. PO"Multiple markers at this line"
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    1. COAre you using Eclipse? If so, 'Multiple Markers ...' is Eclipse's way of telling you that there are multiple errors on that line. Try refreshing the project folder and doing a build - it could just be Eclipse being special.
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      1. USmcfinnigan
    2. CO@mcfinnigan, yes I'm using Eclipse. I selected the project and then refreshed it but the error is the same... I would like to build it as you say but I can't find that action and I'm not sure if that would solve my problem because till now I didn't see anythink related to building the Stockwatcher app...
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    3. CO@mcfinnigan, well I found the build option, but it's not active even when I select the project from the explorer. "Build automatically" is activated.
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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