Jae Lee

thank you for your input.
i wish my professor went over this before hand.
after reading up on the topics, i seem to have a better grasp of things.
thanks for you help. i really appreciate it.

J

Hi. I am trying to send a file "Props.txt" from a client to a server using a Socket.
I am currently receiving and error from the server side stating that there is a "Connection Reset".

I am wondering what I am doing wrong.

Client:
package Network; import java.net.*; import java.io.*; public class Client { static BufferedInputStream bis; static BufferedOutputStream bos; static Socket socket; static byte[] byteArray; //BufferedInputStream bis; //BufferedOutputStream bos; static BufferedReader in = null; static PrintWriter out = null; public static void main (String[] args) { try{ socket = new Socket("192.168.1.100", 5555); System.out.println("I am the Client. Connecting ..."); in = new BufferedReader(new InputStreamReader(socket.getInputStream())); out = new PrintWriter(socket.getOutputStream(), true); BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in)); out.println("Connecting.."); //(1) System.out.println("Server: "+in.readLine()); //(2) File file = new File("Props.txt"); int len = (int)file.length(); System.out.println("Sending file size of Props.txt"); out.println(Integer.toString(len)); //(1) System.out.println("Server: "+in.readLine()); //(2) bis = new BufferedInputStream(new FileInputStream("Props.txt")); bos = new BufferedOutputStream(socket.getOutputStream()); byteArray = new byte[1000]; int i=0; while ((i = bis.read(byteArray)) != len){ //in = int; byteArray = byte[] bos.write(byteArray, 0, i); } } catch(IOException e){ e.printStackTrace(); } } }

Server:
package Network; import java.io.*; import java.net.*; public class Server { public static void main (String[] args){ Socket socket; ServerSocket serverSocket; BufferedReader in = null; PrintWriter out = null; BufferedInputStream bis; BufferedOutputStream bos; try{ serverSocket=new ServerSocket(5555); socket = serverSocket.accept(); out = new PrintWriter(socket.getOutputStream(), true); in = new BufferedReader(new InputStreamReader(socket.getInputStream())); String input, output; input = in.readLine(); //(1) out.println("Server: Connected. Input from Client:"+input); //(2) input = in.readLine(); //(1) out.println("Server: I am ready to recieve file. Input from Client:"+input); //(2) bis = new BufferedInputStream(socket.getInputStream()); bos = new BufferedOutputStream(new FileOutputStream("PropsOut.txt")); int length = Integer.parseInt(input); int i=0; int IN=0; byte[] receivedData = new byte[1000]; while ((IN = bis.read(receivedData)) != length){ //in = int; receivedData = byte[] bos.write(receivedData,0,IN); } } catch(IOException e){ e.printStackTrace(); } } }

thank you in advance for the help.

Hello to all,

I was wondering if there was a way to invert an array.
(ie.
int[] test ={1, 2, 3, 4, 5}; ... invert somehow for(int i=0; i<test.length; i++) { System.out.println(test[i];}

and the result will be
1
2
3
4
5


thank you

I feel really stupid and i found my own mistake.

Hello everyone,

I am currently taking an online intro to java class. The professor has not been able to get back to me and I need to understand this in order to complete the hw which is due at the end of the week.
I have copied my entire code from top to bottom

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;


class third extends JFrame
{
JButton b1, b2, b3;
JPanel p1;

third()
{
setTitle("getting smarter with swing");
setSize(300,400);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

b1 = new JButton("b1");
b2 = new JButton("b2");
b3 = new JButton("b3");

p1 = new JPanel();

b1.addActionListener(new b1Listener());
b2.addActionListener(new b1Listener());
b3.addActionListener(new b1Listener());


setLayout(new FlowLayout());
p1.add(b1);
p1.add(b2);
p1.add(b3);

add(p1);

setVisible(true);
}



class b1Listener implements ActionListener
{
public void actionPerformed(ActionEvent b)
{
if (b.getActionCommand().equals("b1")) //will return b1, b2, b3 as a string
p1.setBackgroud(Color.RED);
else if (b.getActionCommand().equals("b2"))
p1.setBackground(Color.BLUE);
else if (b.getActionCommand().equals("b3"))
p1.setBackground(Color.YELLOW);
}
}


public static void main (String [] args)
{
third a1 = new third(); //create object for second class
}
}


The bold is where I am receiving the error. Here is what it looks like verbatim.

second.java:44: cannot find symbol
symbol: method setBackground(java.awt.Color)
location: class javax.swing.JPanel
p1.setBackground(Color.RED);

Please HELP. THANK YOU