How to use GWT 2.1 Data Presentation Widgets

Question

At the 2010 Google IO it was announced that GWT 2.1 would include new Data Presentation Widgets. 2.1M is available for download, and presumably the widgets are included, but

Answer 1

To show multiple column in table you need to put array in list. The reference code to achieve this is:

package com.test.client;

import java.util.ArrayList;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.cellview.client.CellTable;
import com.google.gwt.user.cellview.client.SimplePager;
import com.google.gwt.user.cellview.client.TextColumn;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.view.client.ListViewAdapter;
import com.google.gwt.view.client.SingleSelectionModel;

public class Index implements EntryPoint {

    public void onModuleLoad() {

        // create some data
        ArrayList values = new ArrayList();
        values.add(new String[] { "1", "a" });
        values.add(new String[] { "2", "b" });
        values.add(new String[] { "3", "c" });
        values.add(new String[] { "4", "d" });
        values.add(new String[] { "5", "e" });
        values.add(new String[] { "6", "f" });
        values.add(new String[] { "7", "g" });
        values.add(new String[] { "8", "h" });
        values.add(new String[] { "9", "i" });
        values.add(new String[] { "10", "j" });


        // create a ListViewAdapter
        ListViewAdapter lva = new ListViewAdapter();
        // give the ListViewAdapter our data
        lva.setList(values);

        RootPanel.get().add(new HTML("
"));

        {
            // CellTable
            CellTable ct = new CellTable();
            ct.setSelectionEnabled(true);
            ct.setSelectionModel(new SingleSelectionModel());
            ct.setPageSize(2);
            lva.addView(ct);
            ct.addColumn(new TextColumn() {

                @Override
                public String getValue(String[] object) {
                    return object[0];
                }
            }, "First");

            ct.addColumn(new TextColumn() {

                @Override
                public String getValue(String[] object) {
                    return "%" + object[1] + "%";
                }
            }, "Second");

            // create a pager, giving it a handle to the CellTable
            SimplePager pager = new SimplePager(ct, SimplePager.TextLocation.CENTER);

            // add the Pager to the page
            RootPanel.get().add(pager);

            // add the CellList to the page
            RootPanel.get().add(ct);
        }
    }
}