放置点不显示建议 Java Swing GUI

Question

I am trying to write a program with Java Swing GUI. My purpose is to check whether tables are available or not. So I tried such code as:

JButton btnNewButton = new JButton("Send!");
btnNewButton.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {    
        int numberofpeople = Integer.parseInt(numberppltxtField.getText());
        
        if (numberofpeople ==1) {
            if (tables1.getTables() > 0) { /* I have a object tables1 which represent the number of 1 person tables )
            table1.setTables(tables1.getTables() -1 );
        }
        
        else {
        jlblWarning.setText("We're full!"); } /* to change the label under the button.*/
    }

JLabel lblNewLabel_11 = new JLabel("New label");
lblNewLabel_11.setFont(new Font("Times New Roman", Font.BOLD, 12));
lblNewLabel_11.setBounds(876, 463, 197, 30);
frame.getContentPane().add(lblNewLabel_11);

(Note: lblNewLabel_11 is equal to jlblWarning . I tried to create again.)

So the problem is that when I write jlblWarning and put a dot here, I can not see setText suggestion. Also, when I write it without suggestion, I still have error. Can you please help me?

Note: There might be little syntax error since I write the code here again, not copy paste.

Answer 1

You have to define jlblWarning first