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GWT Online Test

Topics Covered

  • Overlay types
  • Delayed Logic
  • History Mechanism
  • Dependency
  • Application
  • Module Descriptor
  • Complex Widget
  • Server Side Service
  • Runtime Optimization

Useful for hiring

  • GWT Developer
  • GWT Designer
  • Full-Stack Developer

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Question

class Food extends JavaScriptObject {
  protected Food() { }
  protected final native String getFoodItem() {
      return this.FoodName; 
  };

  public final String getFoodName() {
    return "Delicious - " + getFoodItem();
  }
}

Which of the following statement is true about the above code snippet?

Answer
    • JavaScriptObject class emulates javascript objects and converts it into a java object.

    • Food is an instance of a true java object.

    • Augmented Java type without disturbing the underlying JavaScript object.

    • None of the mentioned

Question

Timer tmr = new Timer() {
    public void run() {
            Window.alert ("running fast!");
    }
};

Choose the correct option regarding the above code snippet.

Answer
    • Timer class is used to schedule an activity in future.

    • Run is an overridden method which is called as the entry point for the activity.

    • "tmr.schedule(1000)" runs the activity after 1 second.

    • All of the mentioned

Question

A class named gwt_init has been created. How can this class be used for loading a GWT application?

Answer
    • Call that class from main class.

    • Specify the entry-point class = 'gwt_init' in the module descriptor file.

    • Specify the load-point class = 'qwt_init'  in the module descriptor file.

    • The GWT application is always loaded with default settings and refracted on the next cycle.

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