public ValidateQuestion() 
    {
        initComponents();
        Approve_btn.addActionListener( this );
        Reject_btn.addActionListener( this );
        Edit_btn.addActionListener( this );
        Next_btn.addActionListener( this );
        Previous_btn.addActionListener( this );
        Submit_btn.addActionListener(this);
        Answer1_rdbtn.addActionListener( this );
        Answer2_rdbtn.addActionListener( this );
        Answer3_rdbtn.addActionListener( this );
        Answer4_rdbtn.addActionListener( this );
        
        this.setUp();
    }