Nesne Tabanlı Programlama-2 (Bahar-2016) Hafta-7/1
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import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.sql.*; public class veritabani extends JFrame implements ActionListener { DefaultListModel<String>[] dlm; JList<String>[] jlist; JTextField jtf1,jtf2; public veritabani() { this.setTitle("Telefon Rehberi"); this.setSize(200,400); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setLayout(new FlowLayout()); JPanel jpn_main= new JPanel(); jpn_main.setLayout(new GridLayout(1,2)); jpn_main.setPreferredSize(new Dimension(190, 390)); JLabel jlab1= new JLabel("İsim"); JLabel jlab2= new JLabel("Telefon No"); JPanel jpn1= new JPanel(); JPanel jpn2= new JPanel(); jpn1.add(jlab1); jpn2.add(jlab2); dlm= new DefaultListModel[3]; jlist = new JList[2]; dlm[2] = new DefaultListModel<String>(); // id listesi for(int i=0;i<2;i++) { dlm[i] = new DefaultListModel<String>(); jlist[i]= new JList<String>(dlm[i]); JScrollPane jscp = new JScrollPane(jlist[i]); jscp.setPreferredSize(new Dimension(90, 290)); if(i%2==0) jpn1.add(jscp); else jpn2.add(jscp); } jtf1 = new JTextField(); jtf2 = new JTextField(); JButton jbtn1 = new JButton("Ekle"); JButton jbtn2 = new JButton("Sil"); jtf1.setPreferredSize(new Dimension(90, 30)); jtf2.setPreferredSize(new Dimension(90, 30)); jbtn1.setPreferredSize(new Dimension(90, 30)); jbtn2.setPreferredSize(new Dimension(90, 30)); jpn1.add(jtf1); jpn1.add(jbtn1); jpn2.add(jtf2); jpn2.add(jbtn2); jpn_main.add(jpn1); jpn_main.add(jpn2); jbtn1.setActionCommand("ekle"); jbtn1.addActionListener(this); jbtn2.addActionListener(this); this.add(jpn_main); Connection conn = baglan(); verigetir(conn); this.setVisible(true); } public void verigetir(Connection conn) { if(conn==null) return; try{ dlm[0].clear(); dlm[1].clear(); dlm[2].clear(); // id ler silindi String sql = "select id,isim,telno from kullanicilar order by isim"; Statement st = conn.createStatement(); ResultSet rs = st.executeQuery(sql); while(rs.next()) { dlm[0].addElement(rs.getString("isim")); dlm[1].addElement(rs.getString("telno")); dlm[2].addElement(rs.getString("id")); // id ler listeye yukleniyor } } catch(Exception ex) { JOptionPane.showMessageDialog(this, "Sorgu Hatasi!"); } } @Override public void actionPerformed(ActionEvent arg0) { Connection conn = baglan(); if(conn==null) return; try{ if(arg0.getActionCommand().equals("ekle")) { String sql="insert into kullanicilar (isim,telno) values(?,?)"; if(jtf1.getText().length()>0 && jtf2.getText().length()>0) { PreparedStatement ps = conn.prepareStatement(sql); ps.setString(1, jtf1.getText()); ps.setString(2, jtf2.getText()); ps.executeUpdate(); jtf1.setText(""); jtf2.setText(""); } } else { int secilen = jlist[0].getSelectedIndex(); if(secilen>-1) { String id = dlm[2].get(secilen); String sql = "delete from kullanicilar where id=?;"; PreparedStatement ps = conn.prepareStatement(sql); ps.setString(1, id); int say = ps.executeUpdate(); //JOptionPane.showMessageDialog(this, "Silinen kayit:"+say); } } }catch(Exception ex) { JOptionPane.showMessageDialog(this, "Hata: "+ex.getMessage()); } verigetir(conn); } public Connection baglan() { Connection conn = null; try{ Class.forName("org.sqlite.JDBC"); conn=DriverManager.getConnection("jdbc:sqlite:orgun1h7_1.db"); }catch(Exception ex) { JOptionPane.showMessageDialog(this, "Baglanti Hatasi!"); } return conn; } /** * @param args */ public static void main(String[] args) { new veritabani(); } } |
NTP2 (Bahar-2016) Hafta-7/1 sqlite-jdbc
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