The fourth day of getting started with Java Applet

 

Mouse event example1

The source code of this example is as follows:

 Import java. applet .*;
  

Import java. awt .*;
  

// As mentioned in the previous example, I will not continue. Pai_^
  

Public class Aa1 extends Applet
  

{
  

Int cx = 50;
  

Int cy = 50;
  

// Define the initial position of the mouse, that is, the string that appears when you have not pressed the mouse
  

.
   

Public boolean mouseDown (Event e, int x, int y)
  

// Define the mouse-down function. This is a Boolean function, that is, there are only real and false functions.
  

Status function.
   

// Parameter e is the mouse-pressed parameter. When the mouse is pressed, the e value is true, and x and y are the mouse's
  

Location parameter.
   

{
  

Cx = x;
  

Cy = y;
  

// Re-define the position parameter of the string so that the position of the string is the position where the mouse is pressed.
  

Repaint ();
  

// Re-draw the screen to update the string position.
  

Return true;
  

// Return the function. This function is true.
  

}
  

Public void paint (Graphics g)
  

// The paint function and screen rendering function. The browser starts to know how to draw the screen,
  

Draw something.
   

// Draw a string at the cx and cy positions to display it.
  

{
  

G. drawString ("where to press the mouse, I will show it! ", Cx, cy );
  

}
  

}