Set Action (and other values)

Action action = new AbstractAction(){
    @Override
    public void actionPerformed(ActionEvent e) {
        componentTemplate.addTextToTextArea("The New Action ");
    }
};
ImageIcon icon = new ImageIcon(getClass().getResource("/new_icon.png"));
action.putValue(Action.LARGE_ICON_KEY, icon);
action.putValue(Action.NAME, "The New Action");
action.putValue(Action.ACTION_COMMAND_KEY, "Action Command from Action");
action.setEnabled(true);
jButton1.setAction(action);

Reset:
    jButton1.setAction(null);

Notes:
    This method can be used to set these values of a JButton:
        Action.NAME - sets the text
        Action.SHORT_DESCRIPTION - tooltip
        Action.ACTION_COMMAND_KEY
        Action.MNEMONIC_KEY
        Action.DISPLAYED_MNEMONIC_INDEX_KEY
        Action.LARGE_ICON_KEY - primary icon
        also, can set the Enabled state

Set Action Command Text

jButton1.setActionCommand("The New Action Command Text");

Reset:
    jButton1.setActionCommand(null);

Notes:
    Sets the text that is passed to the Action Event when the Button is Clicked.

Hide the Text of the Action

jButton1.setHideActionText(true);

Reset:
    jButton1.setHideActionText(false);

Notes:
    Hide the Button text that was set specifically from the Action.

Do Click

jButton1.doClick();

//reset
//   jButton1.doClick();

Change Multi-Click Threshhold

jButton1.setMultiClickThreshhold(2000);

Reset:
    jButton1.setMultiClickThreshhold(0);

Notes:
    Ignore any manual mouse clicks that happen that are less than the number of milliseconds (e.g. 2000ms) since the last mouse click

Print if Button is the Default

System.out.println("Is button the Default Button: "+jButton1.isDefaultButton());

Description:
    Whether or not this JButton will get the default focus if the parent component gets focus

Set Default Button of the RootPane

JRootPane root = SwingUtilities.getRootPane(jButton1);
if(root != null){
    root.setDefaultButton(jButton1);
}

Reset:
    JRootPane root = SwingUtilities.getRootPane(jButton1);
    if(root != null){
        root.setDefaultButton(null);
    }

Disable Default Capable

jButton1.setDefaultCapable(false);

Reset:
    jButton1.setDefaultCapable(true);

Notes:
    This flag is checked when the button gains focus

Set Mnemonic

jButton1.setMnemonic('R');

Description:
    Assigning the character 'R', for example, requires typing Alt+R to perform a click on this JButton

Reset:
    jButton1.setMnemonic(-1);

Note:
    This also resets the Displayed Mnemonic Index

Set Displayed Mnemonic

int index = 1;
if(jButton1.getText() != null && jButton1.getText().length() >= (index+1)){
    jButton1.setDisplayedMnemonicIndex(index);
}

Description:
    Places an underscore on the text character at the index

Reset:
    jButton1.setDisplayedMnemonicIndex(-1);

Notes:
    Doesn't show up when the JButton is using HTML text
    The provided index must be less than the text length

Set Button Group

((DefaultButtonModel)jButton1.getModel()).setGroup(new ButtonGroup());

Reset:
    ((DefaultButtonModel)jButton1.getModel()).setGroup(null);

Notes:
    Not useful for non-toggle buttons (like this one)

Set New Model

jButton1.setModel(new DefaultButtonModel());

//reset
//   jButton1.setModel();