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}); } }

import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException import javax.swing.JButton; import javax.swing.JLabel;

import javax.swing.JOptionPane; import javax.swing.JTextField; public class xiugai { PreparedStatement ps; ResultSet rs ; public xiugai() {

final ShowFlowLayout frame = new ShowFlowLayout();

JLabel jlblÇëÊäÈëÄãÒªÐÞ¸ÄÈ˵ÄÐÕÃû = new JLabel(\ÇëÊäÈëÄãÒªÐÞ¸ÄÈ˵ÄÐÕÃû\

frame.add(jlblÇëÊäÈëÄãÒªÐÞ¸ÄÈ˵ÄÐÕÃû);

final JTextField jtfÇëÊäÈëÄãÒªÐÞ¸ÄÈ˵ÄÐÕÃû = new JTextField(20);

frame.add(jtfÇëÊäÈëÄãÒªÐÞ¸ÄÈ˵ÄÐÕÃû);

JButton jbtÈ·¶¨ = new JButton(\È·¶¨ \ frame.add(jbtÈ·¶¨);

JButton jbt·µ»Ø = new JButton(\·µ»Ø \ frame.add(jbt·µ»Ø);

frame.setTitle(\ͨѶ¼Êý¾Ý¿âϵͳ \ frame.setLocation(500,200); frame.setSize(270, 250); frame.setVisible(true);

jbtÈ·¶¨.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { ps = ShowFlowLayout.con

.prepareStatement(\ ps.setString(1,jtfÇëÊäÈëÄãÒªÐÞ¸ÄÈ˵ÄÐÕÃû.getText()); rs=ps.executeQuery() ; if(!rs.next()) JOptionPane.showMessageDialog(null,\´ËÈ˲»´æÔÚ£¡\

else { ps = ShowFlowLayout.con

.prepareStatement(\from friend where name=?\ ps.setString(1, jtfÇëÊäÈëÄãÒªÐÞ¸ÄÈ˵ÄÐÕÃû.getText()); ps.executeUpdate();

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new TestSwingCommonFeatures(); }

} catch (SQLException e2) {

// TODO Auto-generated catch block e2.printStackTrace(); } }

});

jbt·µ»Ø.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { frame.dispose(); } }); } }

import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel;

import javax.swing.JOptionPane; import javax.swing.JTextField;

public class shanchu extends JFrame { PreparedStatement ps; ResultSet rs ;

public shanchu() {

final ShowFlowLayout frame = new ShowFlowLayout();

JLabel jlblÇëÊäÈëÄãҪɾ³ýÈ˵ÄÐÕÃû = new JLabel(\ÇëÊäÈëÄãҪɾ³ýÈ˵ÄÐÕÃû\

frame.add(jlblÇëÊäÈëÄãҪɾ³ýÈ˵ÄÐÕÃû);

final JTextField jtfÇëÊäÈëÄãҪɾ³ýÈ˵ÄÐÕÃû = new JTextField(20);

frame.add(jtfÇëÊäÈëÄãҪɾ³ýÈ˵ÄÐÕÃû);

JButton jbtÈ·¶¨ = new JButton(\È·¶¨ \ frame.add(jbtÈ·¶¨);

JButton jbt·µ»Ø = new JButton(\·µ»Ø \ frame.add(jbt·µ»Ø);

frame.setTitle(\ͨѶ¼Êý¾Ý¿âϵͳ \ frame.setLocation(500,200); frame.setSize(270, 250);

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frame.setVisible(true);

jbtÈ·¶¨.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { ps = ShowFlowLayout.con

.prepareStatement(\ ps.setString(1,jtfÇëÊäÈëÄãҪɾ³ýÈ˵ÄÐÕÃû.getText()); rs=ps.executeQuery() ; if(!rs.next()) JOptionPane.showMessageDialog(null,\´ËÈ˲»´æÔÚ£¡\

else { ps = ShowFlowLayout.con

.prepareStatement(\from friend where name=?\

ps.setString(1, jtfÇëÊäÈëÄãҪɾ³ýÈ˵ÄÐÕÃû.getText()); ps.executeUpdate();

JOptionPane.showMessageDialog(null,\ɾ³ý³É¹¦£¡\ frame.dispose(); } } catch (SQLException e2) {

// TODO Auto-generated catch block e2.printStackTrace(); } }

});

jbt·µ»Ø.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { frame.dispose(); } }); } }

import javax.swing.JButton; import javax.swing.JLabel;

public class shuanchuchenggong {

public static void main(String[] args) {

ShowFlowLayout frame = new ShowFlowLayout();

JLabel jlblɾ³ý³É¹¦= new JLabel(\ɾ³ý³É¹¦ £¡ \

frame.add(jlblɾ³ý³É¹¦);

JButton jbtÈ·¶¨ = new JButton(\È·¶¨ \ frame.add(jbtÈ·¶¨);

JButton jbtÈ¡Ïû = new JButton(\È¡Ïû \ frame.add(jbtÈ¡Ïû);

frame.setTitle(\ͨѶ¼Êý¾Ý¿âϵͳ \

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