gwt从字符串创建日期对象？

Question

我在gwt appliation中使用了一个motionchart。我的问题是如何从字符串创建一个Date对象？以下是我的代码：

import java.text.DateFormat; 
import java.text.ParseException; 
import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.Date; 
import com.google.gwt.user.client.rpc.AsyncCallback; 
import com.google.gwt.user.client.ui.HorizontalPanel; 
import com.google.gwt.visualization.client.AbstractDataTable; 
import com.google.gwt.visualization.client.DataTable; 
import com.google.gwt.visualization.client.VisualizationUtils; 
import com.google.gwt.visualization.client.visualizations.LineChart; 
import com.google.gwt.visualization.client.visualizations.MotionChart; 
import com.google.gwt.visualization.client.visualizations.MotionChart.Options; 
import com.google.gwt.visualization.client.AbstractDataTable.ColumnType; 
import com.google.gwt.core.client.GWT; 
import com.google.gwt.i18n.client.DateTimeFormat; 

import component.client.SQLRunner; 
import component.client.SQLRunnerAsync; 

public class DashboardWidget 
{ 
    private HorizontalPanel containerPanel=null; 
    private DataTable data=null; 

    public DashboardWidget() 
    { 
     containerPanel = new HorizontalPanel(); 
    } 
    public HorizontalPanel getContainerPanel() 
    { 
     SQLRunnerAsync service = (SQLRunnerAsync) GWT.create(SQLRunner.class); 
     AsyncCallback<ArrayList<String[]>> callback = new AsyncCallback<ArrayList<String[]>>() 
     { 
      @Override 
      public void onFailure(Throwable caught) 
      { 
      } 

      @Override 
      public void onSuccess(final ArrayList<String[]> result) 
      { 
       Runnable onLoadCallback = new Runnable() 
       { 
        public void run() 
        { 
         DataTable data = DataTable.create(); 
         data.addColumn(ColumnType.STRING, " Name"); 
         data.addColumn(ColumnType.DATE, "Date"); 
         data.addColumn(ColumnType.NUMBER, "Count"); 
         data.addColumn(ColumnType.NUMBER, "Something"); 
         data.addColumn(ColumnType.NUMBER, "Something Else"); 

         data.addRows(result.size()); 

         @**SuppressWarnings("deprecation") 
         Date date = new Date(1888,06,01); 
         DateTimeFormat fmt = DateTimeFormat.getFormat("yyyy,MM,dd");** 

         for(int i=0;i<result.size();i++) 
         { 
          String[] temp = result.get(i); 
          String name=temp[0];//name 
          String count= temp[2]; 
          String something=temp[3]; 
          String seomthingElse=temp[5]; 


          data.setValue(i, 0, name);//NAME 
          data.setValue(i, 1, date);//date 
          data.setValue(i, 2, Integer.parseInt(count));//eloc 
          data.setValue(i, 3, Integer.parseInt(something));//warning 
          data.setValue(i, 4, Integer.parseInt(somethingeElse));//static (open) warning 
         } 

         Options options = Options.create(); 
         options.setWidth(1000); 
         options.setHeight(1000); 

         MotionChart chart = new MotionChart(data, options); 
         containerPanel.add(chart); 
        } 
       }; 
       VisualizationUtils.loadVisualizationApi(onLoadCallback, MotionChart.PACKAGE);    
      } 
     }; 
     service.getDataFromDatabase("","","","", callback); 
     return containerPanel; 
    } 
} 

那么如何从字符串为GWT应用程序创建日期对象？

Answer 1

你不能使用DateTimeFormat对象吗？就像这样：

Date parsed = fmt.parse(text);