Java MouseListener 🖱️

Java MouseListener mouselistener GUI swing tutorial for beginners

#java #MouseListener #mouselistener #GUI #swing #tutorial #beginners

[BroCodez]

public class Main{

public static void main(String[] args) {

new MyFrame();
}
}
import java.awt.Color;
import java.awt.event.*;
import javax.swing.*;

public class MyFrame extends JFrame implements MouseListener{

JLabel label;

MyFrame(){

this.setSize(500, 500);
this.setLayout(null);

label = new JLabel();
label.setBounds(0, 0, 100, 100);

label.setOpaque(true);


this.add(label);
this.setVisible(true);
}

@Override
public void mouseClicked(MouseEvent e) {
// Invoked when the mouse button has been clicked (pressed and released) on a component
//System.out.println("You clicked the mouse");
}

@Override
public void mousePressed(MouseEvent e) {
// Invoked when a mouse button has been pressed on a component
System.out.println("You pressed the mouse");

}

@Override
public void mouseReleased(MouseEvent e) {
// Invoked when a mouse button has been released on a component
System.out.println("You released the mouse");

}

@Override
public void mouseEntered(MouseEvent e) {
// Invoked when the mouse enters a component
System.out.println("You entered the component");

}

@Override
public void mouseExited(MouseEvent e) {
// Invoked when the mouse exits a component
System.out.println("You exited the component");

}

}

[bitcoin]

With each video I watch understanding terms on the next one gets easier. I'll one day rewatch this whole playlist to master all these concepts. Thank you bro <3

[DanielRodrigues-bxlr]

This was fantastic! I love how you incorporated those emoticons with funny explanations! :D

[mahernurhussen]

This might be the first Java program that I actually loved since learning about the countdown one.

[pavelkvasnicka]

This is the best Java tutorial for beginners, so you can learn Java and English in one hit. Please keep going! I vote for Java advance tutorial. Thanks a lot Bro

[monwil]

Bro, keep the juice flowing 👏. Thanks

[parkerpierce]

Really appreciate ya making all these videos! Made a pivot to code after 2 strokes this year and the way you explained the concepts really helps me digest and install the new skills . Are you still open to making more, or is this more or less a completed series? Just curious.

[deepdaddy]

gosh im late, great content, love the effort you put in making the videos

[ShadwAnlirome]

Gracias que buen proyecto, entendí de la mejor manera, saludos desde colombia espero seguir aprendiendo con tu canal

[zoetenuta]

Dude your channel single handedly saved my computer science grade

[maxwong]

When I saw your cover page of this lesson, I thought you are going to talk about how to make the eyes of the emoji following the cursor .

But I was wrong, therefore I decide to make this function comes true as a challenge to myself .

After a few days of struggling and reviewing the math knowledges, I can't believe that I achieve the goal . Now the eyeball spins to follow my cursor . I can even move the whole face around the frame .

Here's my code . There are 3 parts as the comment gets word count limit .

// Part 1

package testing;

public class Main {
public static void main(String[] args) {
MyFrame frame = new MyFrame() ;
}
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class MyFrame extends JFrame implements MouseListener, MouseMotionListener {

// For finding the position of two black balls .
MyFrame blackBall ;

// Instantialization of image icon .
ImageIcon faceIcon = new ;
ImageIcon leftWhiteBallIcon = new ;
ImageIcon leftBlackBallIcon = new ;
ImageIcon rightWhiteBallIcon = new ;
ImageIcon rightBlackBallIcon = new ;

// Instantialization of label .
JLabel faceLabel = new JLabel() ;
JLabel leftWhiteBallLabel = new JLabel() ;
JLabel leftBlackBallLabel = new JLabel() ;
JLabel rightWhiteBallLabel = new JLabel() ;
JLabel rightBlackBallLabel = new JLabel() ;

// distance between the cursor and the start point of the face .
double cursorFaceDistanceX, cursorFaceDistanceY ;
// distance between the cursor and the eyeball .
double cursorLeftBlackBallDistanceX, cursorLeftBlackBallDistanceY ;
double cursorRightBlackBallDistanceX, cursorRightBlackBallDistanceY ;
// distance between the start point of face and the orbit center .
final double faceLeftOrbitDistanceX = 150, faceLeftOrbitDistanceY = 180;
final double faceRightOrbitDistanceX = 350, faceRightOrbitDistanceY = 180 ;

// component parameters (frame, face, 2 white balls, 2 black balls, 2 orbits)
final double frameWidth = 1000, frameHeight = 1000, titleBarHeight = 30, screenFrameGap = 7 ;
final double faceWidth = 500, faceHeight = 500 ;
final double leftWhiteBallRadius = 65, rightWhiteBallRadius = 65 ;
final double leftBlackBallRadiusGain = 30, rightBlackBallRadiusGain = 30 ;
final double leftBlackBallRadius = 15 + leftBlackBallRadiusGain, rightBlackBallRadius = 15 + rightBlackBallRadiusGain ;
final double leftOrbitRadius = 50 - leftBlackBallRadiusGain ;
final double rightOrbitRadius = 50 - rightBlackBallRadiusGain ;

// coordination of components under Java's coordinate system (frame, cursor, face, 2 black balls )
double frameAbsoluteX, frameAbsoluteY ;
double cursorRelativeX, cursorRelativeY ;
double faceRelativeX, faceRelativeY ;
double faceCenterX = faceRelativeX + 250, faceCenterY = faceRelativeY + 250 ;
double leftOrbitCenterX = faceLeftOrbitDistanceX, leftOrbitCenterY = faceLeftOrbitDistanceY ;
double rightOrbitCenterX = faceRightOrbitDistanceX, rightOrbitCenterY = faceRightOrbitDistanceY ;
double leftBlackBallCenterX, leftBlackBallCenterY, rightBlackBallCenterX, rightBlackBallCenterY ;

// coordination of component under Cartesian coordinate system (cursor, 2 orbit centers, 2 black balls)
double cursorRelativeCartesianX, cursorRelativeCartesianY ;
double leftOrbitCenterCartesianX = leftOrbitCenterY, leftOrbitCenterCartesianY = leftOrbitCenterX ;
double rightOrbitCenterCartesianX = rightOrbitCenterY, rightOrbitCenterCartesianY = rightOrbitCenterX ;
double leftBlackBallCenterCartesianX, leftBlackBallCenterCartesianY, , ;

// two slopes
double leftCartesianM, rightCartesianM ;

boolean isCursorInLeftObject = false, isCursorInRightObject = false ;
boolean dragFaceState = false ;

public MyFrame()
{
// basic location setting of face, 2 black balls and 2 white balls .
faceLabel.setBounds(0, 0, (int)faceWidth, (int)faceHeight) ;


- leftWhiteBallRadius), (int)(leftOrbitCenterY - leftWhiteBallRadius), (int)(leftWhiteBallRadius*2), (int)(leftWhiteBallRadius*2)) ;


- leftBlackBallRadius), (int)(leftOrbitCenterY - leftBlackBallRadius), (int)(leftBlackBallRadius*2), (int)(leftBlackBallRadius*2)) ;


- rightWhiteBallRadius), (int)(rightOrbitCenterY - rightWhiteBallRadius), (int)(rightWhiteBallRadius*2), ;


- rightBlackBallRadius), (int)(rightOrbitCenterY - rightBlackBallRadius), (int)(rightBlackBallRadius*2), ;


// basic setting of frame .
this.setVisible(true) ;
;
// the start point of setSize is (-15, -8)
, ;
this.setLayout(null) ;
;
;
;
;
this.add(faceLabel) ;
this.addMouseListener(this) ;
;
}

// declare the location of 2 black ball centers returned from "getBlackBallLocation" method .
public MyFrame(double leftBlackBallCenterX, double leftBlackBallCenterY, double rightBlackBallCenterX, double rightBlackBallCenterY)
{
this.leftBlackBallCenterX = leftBlackBallCenterX ;
this.leftBlackBallCenterY = leftBlackBallCenterY ;
this.rightBlackBallCenterX = rightBlackBallCenterX ;
this.rightBlackBallCenterY = rightBlackBallCenterY ;
}

// retrieve the location of 2 black ball centers returned from "getBlackBallLocation" method .
public double getLeftCenterX()
{
return leftBlackBallCenterX ;
}

public double getLeftCenterY()
{
return leftBlackBallCenterY ;
}

public double getRightCenterX()
{
return rightBlackBallCenterX ;
}

public double getRightCenterY()
{
return rightBlackBallCenterY ;
}

// Invoked when a mouse button is pressed on a component(frame) and then dragged.
@Override
public void mouseDragged(MouseEvent e) {
// get the coordination of frame, cursor and face .
getFrameAbsolutePosition() ;
getCursorRelativePosition() ;
getFaceRelativePosition() ;

// if the face area is pressed and then being dragged .
if (dragFaceState)
{
// update the coordination of face .
- cursorFaceDistanceX), (int)(cursorRelativeY - cursorFaceDistanceY)) ;

// update the coordination of the two orbit centers .
leftOrbitCenterX = faceRelativeX + faceLeftOrbitDistanceX ;
leftOrbitCenterY = faceRelativeY + faceLeftOrbitDistanceY ;
rightOrbitCenterX = faceRelativeX + faceRightOrbitDistanceX ;
rightOrbitCenterY = faceRelativeY + faceRightOrbitDistanceY ;
leftOrbitCenterCartesianX = leftOrbitCenterY ;
leftOrbitCenterCartesianY = leftOrbitCenterX ;
rightOrbitCenterCartesianX = rightOrbitCenterY ;
rightOrbitCenterCartesianY = rightOrbitCenterX ;

// update the location of two white balls and two black balls .
- leftWhiteBallRadius), (int)(leftOrbitCenterY - leftWhiteBallRadius)) ;
- rightWhiteBallRadius), (int)(rightOrbitCenterY - rightWhiteBallRadius)) ;
- cursorLeftBlackBallDistanceX), (int)(cursorRelativeY - ;
-, (int)(cursorRelativeY - ;
}
}
// too long, the comment returned error .
// be continue ...

[maxwong]

Hope can make a lesson about the MouseMotionListener .

[_Anna_Nass_]

I will like every video of yours I watch

[shaynazoedeguzman]

Amazing! Much respect! TYVM bro! A perfect 10 tutorial!

[keelgreene]

Awesome just what I've been looking for. Keep up the great content bro

[NiceChange]

I thoroughly enjoyed this video. It was informative very easy to get through. It made me laugh so I felt comfortable which made the subject matter more absorbable and effective. Thank you ..Great work.

[kobby]

bro code thank you very much now because of you I can code my own java gui application but please am having a little problem with api, am trying to create a music downloader software using api from different website but I can't figure it out so please can you make video about how to use api in creating java swing application please !!! hope to hear from you, I have learnt alot from you and hope to keep on learn

[kemann]

Awesome and great and all the good stuff! 👍

[NatyTor]

ho bro! you so good! im realy anjoy in your videos man!!❤❤

[elaprendiz]

Hello Bro! I like so much your videos. I want ask something about Mouse Event. How i can use the events on objects. Like rectangle or ellipse. It's possible implementen inside the object? You can do some video using events on graphics object? Thanks for all.