android

ESERCIZIO CLASSE ANONIMA

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class ClasseAnonima {
JFrame f=new JFrame("classe anonima");
JButton b1=new JButton("Leggi");
JTextArea t1=new JTextArea();
public ClasseAnonima(){
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(300,300);
f.add(BorderLayout.CENTER,t1);
f.add(BorderLayout.SOUTH,b1);
b1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String t2;
t2=t1.getText();
System.out.println("Il testo digitato è: "+t2);
}
});
}
public static void main(String [] Args){
ClasseAnonima c=new ClasseAnonima();
}
}

sqlite

create table ristorante (id int, nome varchar(30), indirizzo varchar(30), primary key(id))
insert into ristorante values (1,"calimero","via pulcino nero n34");
insert into ristorante values (2,"osteriadel ghiottone","via del sorcio morto n22");
select * from ristorante;
select * from ristorante where id=1;
update ristorante set indirizzo="vial del sorcio vivo 22" where id=2;
delate from ristorante where id=1;

android LunchList

package apt.tutorial;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class LunchList extends Activity {
Restaurant r=new Restaurant();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button save=(Button)findViewById(R.id.save);
save.setOnClickListener(onSave);
}
private View.OnClickListener onSave=new View.OnClickListener() {
public void onClick(View v) {
EditText name=(EditText)findViewById(R.id.name);
EditText address=(EditText)findViewById(R.id.addr);
r.setName(name.getText().toString());
r.setAddress(address.getText().toString());
}
};
}

ClienteCompito

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.util.*;
public class ClienteCompito {
BufferedReader lettore;
Socket sock;
PrintWriter scrittore;
JTextField t1;
JTextArea a1;
Quadrato q1;
JScrollPane scrollPane;
public void finestra() {
JFrame f1=new JFrame("semplice chat");
f1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel p1=new JPanel();
a1=new JTextArea(20,50);
JButton b1=new JButton("invia il messaggio");
JButton b2=new JButton("Accendi");
JButton b3=new JButton("Spegni");
t1=new JTextField(20);
q1=new Quadrato();
p1.setLayout(new GridLayout(3,1));
scrollPane= new JScrollPane(a1);
scrollPane= new JScrollPane(q1);
p1.add(a1);
p1.add(t1);
p1.add(b1);
p1.add(q1);
p1.add(b2);
p1.add(b3);
b1.addActionListener(new InviaMessaggio());
f1.add(p1);
f1.setSize(1000,900);
f1.setVisible(true);
Thread tt=new Thread(new InArrivoDalServer());
creaCollegamento();
tt.start();
}
public class InviaMessaggio implements ActionListener{
public void actionPerformed(ActionEvent e){
try{
System.out.println(t1.getText());
scrittore.println(t1.getText());
scrittore.flush();
} catch (Exception ex){ex.printStackTrace();}
t1.setText("");
}
}
public void creaCollegamento(){
try {
sock=new Socket("192.168.3.18",4242);
lettore=new BufferedReader(new InputStreamReader(sock.getInputStream()));
scrittore=new PrintWriter(sock.getOutputStream());
System.out.println("collegamento stabilito");
} catch (Exception ex){ex.printStackTrace();}
}
public class InArrivoDalServer implements Runnable{
public void run(){
String messaggio;
System.out.println("sono qui");
try {
while ( (messaggio=lettore.readLine())!=null){

a1.append(messaggio+"\n");
System.out.println("leggo il messaggio:"+messaggio);
}
} catch (Exception ex){ex.printStackTrace();}
}
}
public static void main(String[] args){
ClienteCompito cc=new ClienteCompito();
cc.finestra();
}
}

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