msaada java program

[baldin]

write a program that automatic connect when internet available in java.

 

[Mtangoo]

Show efforts. This is not ATM equivalent for answers but dscussion forum.
You get to show effort....!

 

[baldin]

my effort but failed!!see my code.


import java.net.*;

import java.io.*;

public class CheckConnection implements Runnable {

protected volatile boolean online=true;
public void run(){

synchronized(this) {
try {
URL url = new URL("http://www.google.com/");
URLConnection conn = url.openConnection();
conn.connect();
online=true;

while(online=true)
{
if(online){
System.err.println("online...");
Thread.sleep(3000); }
if(online == false) {
System.out.println("Going to wait()");
this.wait(3000);
}
}


}
catch(InterruptedException ie) {
ie.printStackTrace();
}
catch (UnknownHostException e) {
// TODO Auto-generated catch block
//e.printStackTrace();

}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();

}
}
}


}

 

[Mtangoo]

do you know Java?

 

[baldin]

somehow!

 

[Mtangoo]

somehow!

Go back and study it. You have not even written a running Java program yet
check out a collection of resources I have made. Read practice and come back.
In case you need a real fast training register for Java Course here and when it starts
you will be notified

 

[baldin]

program run bt the output result is not what i expect..

running part here; Autoconnect.java

import java.awt.FlowLayout;
import javax.swing.JFrame;


public class Autoconnect extends JFrame{
private CheckConnection tr;

public Autoconnect(){
//setSize(200,200);

tr = new CheckConnection();
Thread t = new Thread(tr);
t.setDaemon(true);
if(tr.online = true){
t.start();
}
if(tr.online = false){

}
else{
synchronized(tr) {
tr.online = true;
tr.notify();
}
}
this.getContentPane().setLayout(new FlowLayout());
this.setVisible(true);
this.setDefaultCloseOperation( EXIT_ON_CLOSE);
}





public static void main(String args[]){
Autoconnect th=new Autoconnect();


}
}

 

[Mtangoo]

upload all your sources as zip file. I cannot test by eyes!

 

[baldin]

attachment for my source code;

 

[Mtangoo]

I get in my console
online...
online...
online...
online...
online...
online...

It seems is console app with JFrame that does nothing at all.
Go back and study Swing UI!

 

[baldin]

nimetumia (System.out.println..)console for testing purpose!!hata mimi nimepata hvyo but problem ni kwamba nikirun application nikiwa offline and then nikaconnect pc kwenye internet!!sipati result....

 

[baldin]

nimefanikiwa kuauto connect my program inafanya kazi kama nlivyokuwa nataka.

 

[Mtangoo]

nimefanikiwa kuauto connect my program inafanya kazi kama nlivyokuwa nataka.

what was the issue? na zile Swing Codes zinafanya kazi?
Maana mwanzoni ziikuwa kama urembo tu 🙂

 

[baldin]

ishu ilikuwa logic,before while loop ilikuwa inaloop only while(online=true) so ilikuwa haitest part yote hii:{
URL url = new URL("http://www.google.com/");
URLConnection conn = url.openConnection();
conn.connect();
online=true;}

nilichokifanya nimeitengenezea boolean method:
public static boolean checkcon(){
//code za kutest internet
}

then nika loop hiyo method yote.
while(checkcon()==true){

}