Popup of dialog box in Java

I am currently designing a school curriculum. Java programming requires the use of dialog pop-ups. The first reaction is the alert and confirm in js. When it comes to Java, I am instantly confused. Check out the study summary as follows for future study

1. Display a Error dialog box, the message displayed in the dialog box is 'alert':

JOptionPane.showMessageDialog(null, "alert", "alert", JOptionPane.ERROR_MESSAGE);

2. Display an internal information dialog box, whose message is 'information':

JOptionPane.showInternalMessageDialog(frame, "information","information", JOptionPane.INFORMATION_MESSAGE);

3. Display an information panel with options "yes/no" and message "choose one":

JOptionPane.showConfirmDialog(null, "choose one", "choose one", JOptionPane.YES_NO_OPTION);

4. Display an internal information dialog box with options "yes/no/cancel" and message "please choose" one', and has title information:

JOptionPane.showInternalConfirmDialog(frame,
"please choose one", "information",
JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.INFORMATION_MESSAGE);

5. Display a warning dialog box with options is OK, CANCEL, title is 'Warning', message is 'Click OK to continue':

Object[] options = { "OK", "CANCEL" };
JOptionPane.showOptionDialog(null, "Click OK to continue" , "Warning",
JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE,
null, options, options[0]);

6. Display a dialog box asking the user to type String:

String inputValue = JOptionPane.showInputDialog("Please input a value");

7. Display a dialog box asking the user to select a String:

Object[] possibleValues ​​= { "First", "Second", "Third" };
Object selectedValue = JOptionPane.showInputDialog(null , "Choose one", "Input",
JOptionPane.INFORMATION_MESSAGE, null,
possibleValues, possibleValues[0]);