1 import javax.swing.*;
2 import java.awt.*;
3 import java.awt.event.*;
4 import java.util.regex.*;
5
6 class AddFrame extends JFrame
7 {
8 Container c;
9 JLabel lblRno, lblName;
10 JTextField txtRno,txtName;
11 JButton btnSave, btnBack;
12 JPanel p1,p2;
13
14 AddFrame()
15 {
16 c =getContentPane();
17 c.setLayout(new BoxLayout(c , BoxLayout.Y_AXIS));
18 c.setBackground(Color.orange);
19
20 p1 = new JPanel();
21 lblRno = new JLabel("Rno:");
22 txtRno = new JTextField(4);
23 lblName = new JLabel("Name:");
24 txtName = new JTextField(10);
25
26 p1.add(lblRno);
27 p1.add(txtRno);
28 p1.add(lblName);
29 p1.add(txtName);
30 p1.setBackground(Color.orange);
31 c.add(p1);
32
33 p2 = new JPanel();
34 btnSave = new JButton("Save");
35 btnSave.setBackground(Color.orange);
36 btnBack = new JButton("Back");
37 btnBack.setBackground(Color.orange);
38 p2.add(btnSave);
39 p2.add(btnBack);
40 c.add(p2);
41
42 btnSave.addActionListener(new ActionListener(){
43 public void actionPerformed(ActionEvent ae) {
44 try
45 {
46 String rno = txtRno.getText();
47 String name = txtName.getText();
48 System.out.println(name);
49 DbHandler db = new DbHandler();
50 if( txtName.getText().isEmpty())
51 {
52 throw new InvalidFieldException();
53 }
54 if(Integer.parseInt(rno)<0)
55 {
56 throw new NumberGreaterException();
57 }
58 if(Pattern.matches("[a-zA-Z]+", name) == false){
59 throw new Exception();
60 }
61 //if
62 //throw new StringOnlyException("name");
63
64 db.addStudent(Integer.parseInt(rno),name);
65 }
66 catch(NumberFormatException nfe)
67 {
68 JOptionPane.showMessageDialog(new JDialog(), "Please Enter Integer");
69 }
70 catch(NumberGreaterException nge)
71 {
72 JOptionPane.showMessageDialog(new JDialog(), "Number should be greater than 0");
73 }
74 catch(InvalidFieldException iae)
75 {
76 JOptionPane.showMessageDialog(new JDialog(), "Field(s) should not be blank");
77 }
78 catch(Exception e)
79 {
80 JOptionPane.showMessageDialog(new JDialog(), "Name should not contain Integers");
81 }
82 /*
83 catch(StringOnlyException soe)
84 {
85 JOptionPane.showMessageDialog(new JDialog(), "Number not allowed");
86 }
87 */
88 }});
89
90 btnBack.addActionListener(new ActionListener(){
91 public void actionPerformed(ActionEvent ae){
92 MainFrame a = new MainFrame();
93 dispose();
94 }});
95
96
97
98 setTitle("Add Student");
99 setSize(500,400);
100 setLocationRelativeTo(null);
101 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
102 setVisible(true);
103
104 }
105 } // end of class Addframe
106
107 class NumberGreaterException extends Exception
108 {
109 }
110
111 class InvalidFieldException extends Exception
112 {
113 }
114
115 /*
116 class StringOnlyException extends Exception
117 {
118 public StringOnlyException(String s)
119 {
120 //name = this.name;
121 super(s);
122 //JOptionPane.showMessageDialog( new JDialog(), name);
123 }
124 }
125 */
