JOptionPane YES NO OPTION [duplicate]

问题

I got an JOptionPane and yes and no buttons. But, whichever button you click it still exists. HELP! Heres the code:

int dialogButton = JOptionPane.YES_NO_OPTION;
            JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);
            if(dialogButton == JOptionPane.YES_OPTION) {
                System.exit(0);
            if(dialogButton == JOptionPane.NO_OPTION) {
                  remove(dialogButton);
                }
              }

回答1:

You should actually take the result from the option pane:

dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);

Otherwise, it remains set to JOptionPane.YES_NO_OPTION.

Cleaner would be:

if (JOptionPane.showConfirmDialog(null, "Are you sure?", "WARNING",
        JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {
    // yes option
} else {
    // no option
}

Although, I'm not sure what this line is expected to do in the posted code: remove(dialogButton);.

For more details and examples check out How to Make Dialogs tutorial.

回答2:

int dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING",JOptionPane.YES_NO_OPTION);

if(dialogButton == JOptionPane.YES_OPTION) {
System.exit(0);}else {remove(dialogButton);}

this is the correct!

回答3:

Change the code to

int dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);

回答4:

if(dialogButton == JOptionPane.YES_OPTION) { // <<< start
    System.exit(0);
        if(dialogButton == JOptionPane.NO_OPTION) {
            remove(dialogButton);
        }
}// <<< stop

The result is caused by the fact that the outer if encloses the other if statement, make sure you don't next the if statement, it should be as follows : -

if(dialogButton == JOptionPane.YES_OPTION) {
    System.exit(0);
}else {
    remove(dialogButton);
}

Another thing is this line int dialogButton = JOptionPane.YES_NO_OPTION;, change it to

int dialogButton = JOptionPane.showConfirmDialog (null, "Are you sure?","WARNING", dialogButton);

回答5:

If you want the JOptionPane to be gone then you can:

optionPane.setVisible(false);

If you don't then look at a different answer.

回答6:

if (JOptionPane.showConfirmDialog(this, "sfd", "sd", JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {
    jProgressBar1.setValue(jProgressBar1.getValue() + 10);
    jProgressBar1.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);
}
else {
    System.exit(0);
}

来源：https://stackoverflow.com/questions/15853112/joptionpane-yes-no-option

标签

java

swing

applet

awt

joptionpane