Java Code to Make a Text Box

This code can make a text box that can be use for different user inputs.

/**

*[TextBox]

* 

*

*NAME:       [Gunarath A. M. Raveen]

*Assignment: []

*QUESTION:   []

*

*PURPOSE:    [This is a subclass of the GUIelement which will make a input and output

*             text boxes]

*/

public class TextBox extends GUIelement {

  private static final double MARGIN = 0.005;

  private boolean isInputBox;

  //constructor that will initialize the superclass constructor with highlighted to false

  //and initialize the isInputBox variable.

  public TextBox(double xc,double yc,double hw,double hh,

                 String txt,boolean inp){

    super(xc,yc,hw,hh,txt,false);

    isInputBox = inp;

  }//constructor

  //This will use the superclass draw methos to draw a rectangle with text inside the box.

  public void draw(){

    super.draw();

    StdDraw.textLeft(xCentre-halfWidth+MARGIN,yCentre,text);

  }

  //If the mouse click is on the textbox and it is a input box, text inside the box should

  //be cleared and return true.Otherwise it should return false.

  public boolean handleClick(double x, double y){

    if(super.handleClick(x,y)){

      if(isInputBox){

        text = "";

        draw();

        return true;

      }

      else 

        return false;

    }

    else 

      return false;

  }

  //If the bow is a input box, this should add typed char to the end of the text.

  public boolean handleCharTyped(char c){

    if (isInputBox){

      text +=c;

      draw();

      return true;

    }

    else 

      return false;

  }

  //This will change the text in the box to given string and redraw the box.

  public void displayText(String s){

    text = s;

    draw();

  }

}