java.awt.HeadlessException#printStackTrace ( )源码实例Demo

public void tableChanged(TableModelEvent e) {
	int row=e.getFirstRow();
	int userId=Integer.parseInt(table.getValueAt(row, 0).toString());
	String userName=table.getValueAt(row, 1).toString();
	String pwdString=table.getValueAt(row, 2).toString();
	//String IP=table.getValueAt(row, 3).toString();
	//String state=table.getValueAt(row, 4).toString();
	String userGender=table.getValueAt(row, 5).toString();
	String userEmail=table.getValueAt(row, 6).toString();
	//String userSignature=table.getValueAt(row, 5).toString();
	Date userBirthday=Date.valueOf(table.getValueAt(row, 9).toString());
	Users user=new Users(userId,userName,pwdString, userGender, userEmail,userBirthday);
	UserDao userDao=new UserDao();
	try {
		if(userDao.update(user))
		{
			JOptionPane.showMessageDialog(null, "修改成功！");
		}
		else {
			JOptionPane.showMessageDialog(null, "修改失败！");
		}
	} catch (HeadlessException e1) {
		// TODO Auto-generated catch block
		e1.printStackTrace();
	}
	
}
 

/**
 * Get Top Left X and Y Positions for a Window to centre it on the
 * currently active screen at application startup
 * @param windowWidth - Window Width
 * @param windowHeight - Window Height
 */
public StartUpLocation(double windowWidth, double windowHeight) {
 
 //System.out.println("(" + windowWidth + ", " + windowHeight + ")");
    // Get X Y of start-up location on Active Screen
    // simple_JavaFX_App
    try {
        // Get current mouse location, could return null if mouse is moving Super-Man fast
        Point p = MouseInfo.getPointerInfo().getLocation();
        // Get list of available screens
        List<Screen> screens = Screen.getScreens();
        if (p != null && screens != null && screens.size() > 1) {
     	   // in order for xPos != 0 and yPos != 0 in startUpLocation, there has to be more than 1 screen
            // Screen bounds as rectangle
            Rectangle2D screenBounds;
            // Go through each screen to see if the mouse is currently on that screen
            for (Screen screen : screens) {
                screenBounds = screen.getVisualBounds();
                // Trying to compute Left Top X-Y position for the Applcation Window
                // If the Point p is in the Bounds
                if (screenBounds.contains(p.x, p.y)) {
                    // Fixed Size Window Width and Height
                    xPos = screenBounds.getMinX() + ((screenBounds.getMaxX() - screenBounds.getMinX() - windowWidth) / 2);
                    yPos = screenBounds.getMinY() + ((screenBounds.getMaxY() - screenBounds.getMinY() - windowHeight) / 2);
                    return;
                }
            }
        }
    } catch (HeadlessException headlessException) {
        // Catch and report exceptions
        headlessException.printStackTrace();
    }
    
}
 

public static void displayErrorDialogAndThrowException(String errorMesg, Throwable t, boolean rethrowException) {
    try {
        if(errorMesg != null && errorMesg.length() > 80) {
            errorMesg = errorMesg.replaceAll("(.{80})", "$1\n");
        }
        JOptionPane.showMessageDialog(null, errorMesg, "Fatal error", JOptionPane.ERROR_MESSAGE);
    } catch (HeadlessException e) {
        e.printStackTrace();
    }
    if(rethrowException) {
        throw new RuntimeException(errorMesg, t);
    }
}
 

public static void displayErrorDialogAndThrowException(String errorMesg, Throwable t, boolean rethrowException) {
    try {
        if(errorMesg != null && errorMesg.length() > 80) {
            errorMesg = errorMesg.replaceAll("(.{80})", "$1\n");
        }
        JOptionPane.showMessageDialog(null, errorMesg, "Fatal error", JOptionPane.ERROR_MESSAGE);
    } catch (HeadlessException e) {
        e.printStackTrace();
    }
    if(rethrowException) {
        throw new RuntimeException(errorMesg, t);
    }
}
 

@Override
	public void actionPerformed(ActionEvent e) {
//		SwingUtilities.invokeLater(new Runnable(){
//			public void run() {
//				MainPanel.getInstance().setCenterPanel(UserManagePanel.getInstance());
//			}
//		});
		try {
			int option = JOptionPane.showConfirmDialog(panel, "要删除用户'"+selectedUserId+"'吗?");
			if ( option == JOptionPane.YES_OPTION ) {
				int childCount = model.getRoot().getChildCount();
				for ( int i=0; i<childCount; i++ ) {
					UserTreeTableNode treeNode = (UserTreeTableNode)(model.getRoot().getChildAt(i));
					UserId userId = (UserId)treeNode.getKey();
					if ( this.selectedUserId.equals(userId) ) {
						model.removeNodeFromParent(treeNode);
						User user = UserManager.getInstance().queryUser(userId);
						String accountName = user.getAccountName();
						Account account = AccountManager.getInstance().queryAccountByName(accountName);
						user.setAccount(account);
						//UserManager.getInstance().removeUser(selectedUserId);
						AccountManager.getInstance().deleteGameRole(null, user);
						panel.updateButtonStatus();
						break;
					}
				}
			}
		} catch (HeadlessException e1) {
			e1.printStackTrace();
		}
	}