IsShiftDown when JButton clicked?

Question

Hello everyone | I have a JFrame and I added a JButton to this JFrame.
I also added an ActionListener to JButton.
Now, please convert this pseudo code to Java:

public void actionPreformed(ActionEvent e){
    if (isShiftDown)
        print "Shift is Down.";
    else
        print "Shift is Up.";
}

Actually I want to know isShiftDown while my JButton is pressed or not.

Thank.

Answer 1

replace isShiftDownwith

(e.getModifiers() & InputEvent.SHIFT_MASK) != 0affairs>

(e.getModifiers() & ActionEvent.SHIFT_MASK) != 0

getModifiers () returns the bitmask of all modifiers pressed during the event (alt, ctrl, shift ...), which you can bit by bit, and get the status of one of them. Pretty much what the document says.

: Java 9 InputEvent.SHIFT_DOWN_MASK

Edit2: (ActionEvent # getModifiers() (Java SE 9 JDK 9)), ActionEvent.SHIFT_MASK InputEvent.SHIFT_MASK

• ActionEvent.SHIFT_MASK: 1
• InputEvent.SHIFT_MASK: 1 @Deprecated (from = "9" )
• InputEvent.SHIFT_DOWN_MASK: 64