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JPopupMenu gets closed as soon as the mouse enters in an embedded JCheckboxMenuItem

I wrote the following code to have a JPopupMenu that allows multiple selection of different items.
The problem is that, as soon as the mouse enters one of the displayed JCheckboxMenuItems, the JPopupMenu gets closed. This issue doesn't occur if I replace JCheckboxMenuItem with, for example, JLabel but, for sure, JLabel doesn't work for my purpose.
Any idea of what could trigger this issue? Any idea of how this problem can be resolved in a better way? I apologize for the newbie question but I'm not a java developer. Thanks in advance for any help.
JPanel panel = new JPanel();
panel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedborder(),"Select Layers");
panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
for (MyAction layer : layers) {
JCheckBoxMenuItem box = new JCheckBoxMenuItem(layer);
box.setIcon(new SquareIcon(myColor));
panel.add(box);
}
JPopup popup = new JidePopup();
popup.add(panel)
JButton button = new JButton("Layers");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
popup.show(button,0,button.getHeight())
}
});

Thats in the nature of JPopupMenus. They disappear when the invoker component loses the focus. But I found a little trick here.
Create your own class and extend it from JPopupMenu. Then override the setVisible method that it will only forward true to the super class and create an own method that will setVisible of the super class to false.
public class StayOpenPopup extends JPopupMenu{
public void setVisible(boolean visible){
if(visible == true)
super.setVisible(visible);
}
public void disappear() {
super.setVisible(false);
}
}
Then use it like this in your code
[...]
StayOpenPopup popup = new StayOpenPopup();
popup.add(panel);
[...]
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
if(popup.isVisible())
popup.disappear();
else popup.show(button,0,button.getHeight());
}
});
Now one click on button will show it. And it will stay visible until next click on Button.

Right click popup menu in Processing

I am a beginner in both Java and Processing. I am trying to create a right click popup menu that will be displayed inside a processing jPanel. Part of the code I m using is displayed bellow, belongs to the class that extends PAplet. Initially, popup menu is displayed properly when right mouse buttonis pressed, but after using some other elements of the GUI, it doesnt appear on the screen anymore.
How to fix this? Shall I create the popup menu inside steup() method? Or elsewhere?
Thanks.
private JPopupMenu menu = new JPopupMenu();
private JMenuItem edgeFrom = new JMenuItem("Edge From");
private JMenuItem edgeTo = new JMenuItem("Edge To");
#Override
public void setup() {
size(desiredheight,desiredwidth);
background(255);
PopupActionHandler handler = new PopupActionHandler();
edgeFrom.addActionListener(handler);
edgeTo.addActionListener(handler);
menu.add(edgeFrom);
menu.add(edgeTo);
addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent evt) {
if (evt.isPopupTrigger()) {
menu.show(evt.getComponent(), evt.getX(), evt.getY());
}
}
});
}

Use the below reference link for JPopupMenu
http://www.java2s.com/Code/Java/Swing-JFC/AsimpleexampleofJPopupMenu.htm

ActionListener in InternalFrame that opens another InternalFrame

I'm currently writing a Desktop-Application with Swing that consists of a MainFrame in which several InternalFrames will be running. I want to write the InternalFrames in separate classes for each to avoid having one huge MainFrame-class.
Now my problem is that I want to add an ActionListener to a MenuItem in a PopupMenu in the MenuInternalFrame that opens another InternalFrame in the MainFrame. The MenuInternalFrame appears, however when I click on the MenuItem nothing happens. When I put the code outside of the ActionListener the InternalFrame appears.
The problem must be something with the ActionListener. Could it be my workaround with the local class and a final instance to access the InternalFrame from within the mouseClicked-Method?
Here are the relevant parts of the code from the MainFrame-Constructor:
class InternalFrames {
TestInternalFrame test = new TestInternalFrame();
JDesktopPane desktopPane = new JDesktopPane();
}
final InternalFrames internalFrames = new InternalFrames();
internalFrames.desktopPane.setBackground(Color.WHITE);
Menu menu = new Menu();
menu.getMntmTestMenuItem().addMouseListener( new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
internalFrames.desktopPane.add(internalFrames.test);
internalFrames.test.setVisible(true);
}
});
internalFrames.desktopPane.add(menu);
menu.setVisible(true);
Any ideas what could be the problem? Thanks in advance.

Dont use MouseAdapter on a JMenuItem, use ActionListener and add it via JMenuItem#addActionListener(...) instead:
Menu menu = new Menu();
menu.getMntmTestMenuItem().addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent ae) {
internalFrames.desktopPane.add(internalFrames.test);
internalFrames.test.setVisible(true);
}
});

How to make MouseClicked event work in java

I am pretty sure this is very easy and that I am only missing one line or two but I just cannot make this work despite searching for solutions over the internet. I am fairly new to java and my problem is in a desktop application.
I have a pretty simple desktop application with one text area, one menu bar with one menu and 3 menu item. I want to edit the text of the text area when I click on the Statistic menu item in a JFrame.
Here is the part of the code where I create the menu bar, menu and menu items (as well as their events):
//menu
mnuRevision.setText("Revision");
mnuitmStats.setText("Statistique");
mnuitmStats.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
mnumnuitmStatsMouseClicked(evt);
}
});
mnuRevision.add(mnuitmStats);
mnuitmOrthographe.setText("Grammaire et orthographe");
mnuitmOrthographe.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
mnuitmOrthographeMouseClicked(evt);
}
});
mnuRevision.add(mnuitmOrthographe);
mnuitmAnalyse.setActionCommand("Analyse");
mnuitmAnalyse.setText("Analyse");
mnuRevision.add(mnuitmAnalyse);
jMenuBar1.add(mnuRevision);
setJMenuBar(jMenuBar1);
Here is the Mousclicked function:
private void mnumnuitmStatsMouseClicked(java.awt.event.MouseEvent evt){
this.txtTexte.setText("asdf");
this.repaint();
}
What I want to do is when I click on mnuitemStats, the txtTexte will get the text "asdf" written in it. Somehow, this is not working. It looks like the program is not even getting into the function. I looked on some tutorials and they pretty much have the same code as me except for the objects names since most tutorials uses JButton instead of JMenuItem.
I can provide my whole code if it is needed, but I thought the rest would be irrelevant since it does not touch the menu bar or the textarea. I am using Eclipse Java EE IDE.

I usually write something like
mnuitemStats.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent event)
{// your logic here;
}});

Assuming mnuitmStats is a JMenuItem, it should be. A little more code would be helpful but given that assumption you should use ActionListener not a MouseListener for this.
Something like:
class MenuActionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
//do something
}
}
and
JMenuBar menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("File");
menuBar.add(fileMenu);
JMenuItem newMenuItem = new JMenuItem("New");
newMenuItem.addActionListener(new MenuActionListener());
fileMenu.add(newMenuItem);

How to execute button by clicking on another button java?

menuBar = new JMenuBar();
// File Menu
JMenu fileMenu = new JMenu("File");
menuBar.add(fileMenu);
// File->New
JMenuItem newMenuItem = new JMenuItem("New");
frame.setJMenuBar(menuBar);
newMenuItem.addMouseListener(new MouseAdapter() {
#Override
public void mousePressed(MouseEvent arg0) {
btnExample.setText("Clicked");
btnExample.doClick();
//---------->SOME HOW TO EXECUTE btnExample<---------//
}
});
fileMenu.add(newMenuItem);
final JButton btnExample = new JButton("SD");
frame.getContentPane().add(btnExample, "cell 4 0,growx,aligny top");
btnExample.addMouseListener(new MouseAdapter() {
#Override
public void mouseClicked(MouseEvent arg0) {
spinnerForVar.setValue(4);//default value for spinner
spinnerForFunc.setValue(4);//default value for spinner
...
}
});
Hello! I hope someone can help me. Here it is the problem: I have Menu item "New" and have button btnExample. I want the following: When i click on "File->New" it executes btnExample. My code is able only to change the button title and show visual affect of clicking. But how can I actually execute it?

I have only one advice - don't do that. Don't bind GUI components in this way.
If you want two components to execute the same operation, simply pack this operation in a method and call the method from both components.
Also, use ActionListener - are you sure the user is going to press it using mouse and not keyboard? what if you add shortcuts to those buttons/components?

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
//My button to click on it
jButton1ActionPerformed(evt);//this is the call for the other button to execut it
}

You should not be using a MouseListener for this.
You should be using Actions. Then you can add the Action to both the JButton and the JMemuItem.
Read the section from the Swing tutorial on How to Use Actions.

Amazing, I found my solution in your codes!
btnExample.doClick();
This did the job for me