Creating Hyperlink using GWT

This example describes the Basics for building the Hyperlink using GWT. The steps involved in Building the Hyperlink are described below:-

private Label label = new Label()
Here we are declaring label. Label is a widget that contains text.

Hyperlink link0 = new Hyperlink("Delhi", "Delhi")
Creating Hyperlink object named 'link0'. Hyperlink is a class or a widget that serves as an "internal" hyperlink

VerticalPanel panel = new VerticalPanel()
Creating Vertical panel. Vertical panel is a class that lays all of its widgets out in a single vertical column.

panel.add(label)
This is the method of class Vertical panel. By using this method we added a label to the Panel

History.addHistoryListener(this)
History is a class that allows us to interact with the browser's history stack. addHistoryListener() is a method of this class to adds a listener to the browser's history stack.

HyperLinkExample.java


package org.yournamehere.client;

import com.google.gwt.core.client.EntryPoint;

import com.google.gwt.user.client.HistoryListener;

import com.google.gwt.user.client.History;

import com.google.gwt.user.client.ui.Label;

import com.google.gwt.user.client.ui.Hyperlink;

import com.google.gwt.user.client.ui.RootPanel;

import com.google.gwt.user.client.ui.VerticalPanel;



public class HyperLinkExample implements EntryPoint,HistoryListener {

  private Label label = new Label();

   public void onModuleLoad() {

    Hyperlink link0 = new Hyperlink("Delhi", "Delhi");

    Hyperlink link1 = new Hyperlink("Mumbai", "Mumbai");

    Hyperlink link2 = new Hyperlink("Chennai", "Chennai");

    Hyperlink link3 = new Hyperlink("Banglore", "Banglore");



    String Token = History.getToken();

    if (Token.length() == 0) {

      History.newItem("Banglore");

    }

    VerticalPanel panel = new VerticalPanel();

    panel.add(label);

    panel.add(link0);

    panel.add(link1);

    panel.add(link2);

    panel.add(link3);

    RootPanel.get().add(panel);

    History.addHistoryListener(this);

    History.fireCurrentHistoryState();

  }

  public void onHistoryChanged(String historyToken) {

    label.setText("The current Link selected is: " + historyToken);

  }

}

Main.gwt.xml


<?xml version="1.0" encoding="UTF-8"?>

<module>

  <inherits name="com.google.gwt.user.User"/>

  <entry-point class="org.yournamehere.client.HyperLinkExample"/>

  

</module>

Output of the program

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