Problem with entering data with invalid format into a .txt file
JButton Enter= new JButton(“Enter”); Enter.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String Names=Name.getText(); String Surnames= Surname.getText(); String Dobs=Dob.getText(); String NamesSurnames= Names+Surnames; boolean NumInText = false; boolean TextInNum=false; for(int i=0; i<NamesSurnames.length();i++) { char c=NamesSurnames.charAt(i); if(Character.isDigit(c)) { NumInText = true; break; } } if(NumInText) { JOptionPane.showMessageDialog(null, “Error “); } for(int i=0; i<Dobs.length();i++) { char c=Dobs.charAt(i); if(Character.isLetter(c)) […]