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You have need to implements ActionListener add actionlistener event like this
JButton btnStartServer = new JButton(" >> Start Server <<");
//Add action listener to button
btnStartServer.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
//Execute when button is pressed
Server svr=new Server()
svr.startServer();
}
});
In Server class you have to create a startServer() method to do backend processing part.
Like This Example Code:
public void startServer() {
keepGoing = true;
/* create socket server and wait for connection requests */
try
{
// the socket used by the server
ServerSocket serverSocket = new ServerSocket(port);
// infinite loop to wait for connections
while(keepGoing)
{
// format message saying we are waiting
display("Server waiting for Clients on port " + port + ".");
Socket socket = serverSocket.accept(); // accept connection
// if I was asked to stop
if(!keepGoing)
break;
ClientThread t = new ClientThread(socket); // make a thread of it
al.add(t); // save it in the ArrayList
t.start();
}
// I was asked to stop
try {
serverSocket.close();
for(int i = 0; i < al.size(); ++i) {
ClientThread tc = al.get(i);
try {
tc.sInput.close();
tc.sOutput.close();
tc.socket.close();
}
catch(IOException ioE) {
// not much I can do
}
}
}
catch(Exception e) {
display("Exception closing the server and clients: " + e);
}
}
// something went bad
catch (IOException e) {
String msg = sdf.format(new Date()) + " Exception on new ServerSocket: " + e + "\n";
display(msg);
}
}
/*
manoj kumar
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hi guys please help any body
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Hi , I am just trying to reverse all the words of a string at their place only ex if there is a string : "vandana is a good girl" then the out put of the program should be "anadnav is a doog lrig" for that i have created a package to calculate the no of words in the string and also for calculating reverse of a string that pacage is:
package p1;
public class meth
{
public int cal(String s)
{
int wrd=0;
for(int i=0;i<s.length();i++)
{
char c=s.charAt(i);
if(Character.isWhitespace(c))
{
wrd++;
}
}
return wrd+1;
}
public String rev(String b)
{
String p="";
for(int i=0;i<b.length();i++)
{
p=b.charAt(i)+p;
}
return p;
}
}
-----------------------------------------------------------------And the code of my program is :
import p1.*;
import java.io.*;
class rv
{
public static void main(String args[]) throws IOException
{
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
System.out.println("Enter your string :");
String s=br.readLine();
meth ob=new meth();
int n=ob.cal(s);
String m="";
while(n>=0)
{
for(int i=0;i<s.lenght();i++)
{
char c=s.charAt(i);
if(Character.isWhitespace(c))
{
String p=s.substring(0,i);
meth ob1=new meth();
String sb=ob1.rev(p);
m=m+" "+sb;
s=s.substring(i+1,s.length());
}
}
n--;
}
System.out.println(m);
}
}
but the problem is my program gives different different out put and it's not working well and i've tired  to understand th problem.
-- modified 5-Apr-14 14:25pm.
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Why make it so complicated? Just read the string and then loop through the characters in reverse order and print each one. You will end up with the string reversed.
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i need to reverse the spelling of words and need not to change their order i.e dog is an animal out should be: god si na lamina .if i use for loop then then the whole string get it'sreverse.
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Then all you need to do is split the string at each wordbreak (e.g. space) and then do the same to each word.
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yeah same i was doing in my code can you please take a look of it
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As I suggested earlier, it can be simplified considerably by using the Scanner class, as in the following sample. If you do not wish to use the scanner, then you could write your own class that splits a string into a collection of tokens.
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner("Cotta and Balbus love the sweet voices of the girls");
while (sc.hasNext())
{
String nextWord = sc.next();
char c;
for (int i = nextWord.length() - 1; i > -1; --i)
{
c = nextWord.charAt(i);
System.out.print(c);
}
System.out.print(" ");
}
System.out.println(".");
}
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Take a look at the Scanner class[^], which can help in the breaking up of words.
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To get number of words in string u can simply split that string by space.
int[] words = string.split(" ");
int noofwords = words.length;
after getting number of words, loop the words and use reverse logic.
Regards
Vipul.
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I want java code for fetch the details from my ms access database and those details are run in my program to excute the code.....
-- modified 5-Apr-14 7:44am.
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Guyss i need just code for fetch details from msaccess database...
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Hi guys , I do need help , cause i'm no a develloper but i have to do program on java that will read .txt file from database and get a specific String(FERME):
10/04/13 06:46 PS : 16 PN 239-Km 359.4 L.V K.ANI PN239 L/V: FERME
10/04/13 06:46 PS : 16 PN 239-Km 359.4 L.V 8V CdV C.J : 08.8 V
the file is made of multiple line like above, i just need to check if the file hade the word FERME....
thank you for your help
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If that is all you need to do then it would be faster just to run the FIND command. However if there is more to it than that, and you are sure that you need a Java program, then you need to learn The Java Language[^] and the Basic I/O classes[^].
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Sure I'm doing it but still :
-04-10-11:22:30. DEFAUT Z: .
RANDAN..
P0:.......
P1:.......
P2:.......
P3:.STA... 10/04 11:22
-04-10-11:22:55.............
RANDAN..
P0:.......
P1:.......
P2:.......
P3:.END DF 10/04 11:22
My files lines are structured like above,where the P1,P2..can change their states,at the specifique time,just want read those line and compare if the P1,P
,P3 states changed...please really nee ur help guys!!!...
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mtouxx wrote: nee ur help guys
With what? You still have not explained anything about your code or where it is having a problem/ What do you mean by P1,P2..can change their states,at the specifique time, or just want read those line and compare if the P1,P
,P3 states changed?
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Ok i need a java code that helps me to read and check my file line by line, and in thoses line we get parameters, such as P1, P2,and P3, this file in to take on a data base, and each file get several lines
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mtouxx wrote: i need a java code
Well I'm afraid you are going to have to write it, as only you know what you are trying to do with the content of these files. The Scanner class[^] is probably a good one to help you parse the data.
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Really appreciate thsi conversation such a helpfull!!!!..
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But I think i better ask somewhere else!...
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I think you may find the answers the same; no one is going to write this for you.
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Someone kind enough I believe will help me..anyway think u for your attention!..
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hello,
can any1 tell me how to develop a port scanner in java.I am not asking d entire code but atleast can any1 gimme an idea where 2 start from.
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