?? applet1.java~7~
字號:
package test;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JTextArea;
import java.sql.*;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2005</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class Applet1 extends Applet {
boolean isStandalone = false;
BorderLayout borderLayout1 = new BorderLayout();
JTextField jTextField1 = new JTextField();
JButton jButton1 = new JButton();
JButton jButton2 = new JButton();
JTextArea jTextArea1 = new JTextArea();
public String JDriver="sun.jdbc.odbc.JdbcOdbcDriver";
public String conURL="jdbc:odbc:test";
public Connection con;
public Statement s;
public String query;
public ResultSet rs;
//Get a parameter value
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
}
//Construct the applet
public Applet1() {
}
//Initialize the applet
public void init() {
try {
jbInit();
} catch (Exception e) {
e.printStackTrace();
}
}
//Component initialization
private void jbInit() throws Exception {
this.setLayout(null);
jTextField1.setText("jTextField1");
jTextField1.setBounds(new Rectangle(66, 30, 224, 22));
jButton1.setBounds(new Rectangle(82, 67, 56, 24));
jButton1.setText("jButton1");
jButton1.addActionListener(new Applet1_jButton1_actionAdapter(this));
jButton2.setBounds(new Rectangle(156, 66, 64, 26));
jButton2.setText("jButton2");
jButton2.addActionListener(new Applet1_jButton2_actionAdapter(this));
jTextArea1.setText("jTextArea1");
jTextArea1.setBounds(new Rectangle(63, 117, 276, 170));
this.add(jTextField1);
this.add(jButton1);
this.add(jButton2);
this.add(jTextArea1);
try
{
Class.forName(JDriver);
}
catch(java.lang.ClassNotFoundException e){
System.out.println("ForName:"+e.getMessage());
}
this.opendb();
}
public boolean opendb(){
boolean bz;
bz=true;
try{
con=DriverManager.getConnection(conURL);
s=con.createStatement();
}
catch(SQLException e){
System.out.println("SQLException:"+e.getMessage());
bz=false;
}
return bz;
}
public void addsql(String dbsql){
this.query=dbsql;
}
public boolean updatedb(){
boolean bz;
bz=true;
try{
s.executeUpdate(query);
}
catch(SQLException e){
System.out.println("SQLException:"+e.getMessage());
bz=false;
}
return bz;
}
public boolean querydb(){
boolean bz;
bz=true;
try{
rs=s.executeQuery(query);
}
catch(SQLException e){
System.out.println("SQLException:"+e.getMessage());
bz=false;
}
return bz;
}
public boolean closedb(){
boolean bz;
bz=true;
try{
s.close();
con.close();
}
catch(SQLException e){
System.out.println("SQLException:"+e.getMessage());
bz=false;
}
return bz;
}
//Get Applet information
public String getAppletInfo() {
return "Applet Information";
}
//Get parameter info
public String[][] getParameterInfo() {
return null;
}
public void jButton1_actionPerformed(ActionEvent e) {
this.closedb();
this.opendb();
this.addsql(jTextField1.getText());
this.updatedb();
this.closedb();
}
public void jButton2_actionPerformed(ActionEvent e) {
this.closedb();
this.opendb();
this.addsql(jTextField1.getText());
this.querydb();
try{
jTextArea1.setText("");
while(this.rs.next()){
jTextArea1.append(rs.getString("id")+"\t"+rs.getString("name")+"\t"+rs.getInt("score")+"\n");
}
}
catch(SQLException f){
System.out.println("SQLException:"+f.getMessage());
}
this.closedb();
}
}
class Applet1_jButton2_actionAdapter implements ActionListener {
private Applet1 adaptee;
Applet1_jButton2_actionAdapter(Applet1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.jButton2_actionPerformed(e);
}
}
class Applet1_jButton1_actionAdapter implements ActionListener {
private Applet1 adaptee;
Applet1_jButton1_actionAdapter(Applet1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.jButton1_actionPerformed(e);
}
}
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