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To add anything in scrollPane , try this
jscrollpane.setViewPortView(...)
Regards
Shubhashish
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how to write the output into a text file,i read file using scanner but i dont know anything about how to write into a txt file
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BufferedWriter bw = new BufferedWriter(new FileWriter("./file.txt"));
Then use bw to write your data by invoking it's methods.
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In the TCP - "EchoServer" procedure based on the contents of the transmission changes. The principle of transfer from the Client to Server string to transmit a data structure in C language, as follows:
Requirements once the transfer is complete.
struct {
int devType;
int opType;
int opChannel;
int opVolume;
} Mt_drv;
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As a guess the actual question is basically...
You have an existing C\C++ service that use TCP to return the structure that you posted. And you want to write java to do it.
The basics steps.
1. Figure out if the server is big endian or little endian.
2. Learn basic java
3. Learn java sockets.
4. Implement a java client socket.
5. Call the server and get the result.
- Parse the result based on 1.
You might want to verify that you don't need to send anything.
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it is implemented on the basis of the code
package socket_tcp;
import java.io.*;
import java.net.*;
public class jTcpCliOnly {
public static void main(String[] args) throws IOException {
Socket echoSocket = null;
PrintWriter out = null;
BufferedReader in = null;
String hostName = new String("hp-HP"); //Your: [XXXXXX] to get
try {
echoSocket = new Socket(hostName, 7000);
out = new PrintWriter(echoSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(echoSocket.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Don't know about host: " + hostName);
System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for " + "the connection to: " + hostName);
System.exit(1);
}
BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
String userInput;
while ((userInput = stdIn.readLine()) != null) {
out.println(userInput); //write what user input to TCP server
System.out.println("echo: " + in.readLine());
}
out.close();
in.close();
stdIn.close();
echoSocket.close();
}
}
___________________________________________________________-
package socket_tcp;
import java.io.*;
import java.net.*;
public class jTcpSerOnly {
public static void main(String[] args) throws IOException {
boolean flag = true;
ServerSocket serverSocket = null;
Socket clientSocket = null;
String inputLine;
BufferedReader is = null;
PrintWriter os = null;
try {
serverSocket = new ServerSocket(7000);
System.out.println("Server listen on: " + serverSocket.getLocalPort());
while (flag) {
clientSocket = serverSocket.accept();
is = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
os = new PrintWriter(clientSocket.getOutputStream(), true);
while ((inputLine = is.readLine()) != null) {
if (inputLine.equals("Stop!")) {
flag = false;
break;
}
System.out.println("Server: " + inputLine);
os.println(inputLine);
os.flush();
}
os.close();
is.close();
clientSocket.close();
}
} catch (IOException e) {
System.err.println("Exception: " + e);
}
}
}
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i just want to use java socket implementation sends a c struct
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You just need to send it as a stream of bytes, the same as any other data. Where is this structure coming from?
Veni, vidi, abiit domum
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This structure needs to define with java
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Sorry, but I do not understand what you mean. Java does not have structs, only classes.
Veni, vidi, abiit domum
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rualchina wrote:
i just want to use java socket implementation
sends a c struct
Sockets do not send structures. Not in java, not in C, not in C++.
What they send is data. Nothing else. It up to the two ends to decide what the data represents - not the socket.
Your struct is just 4 integers of which you have not explicitly defined the following
- Size of each int.
- Endianess of the int.
After you know that then you do what I already said.
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I am amazed how many times this question has come up recently: an image file is just a file, a stream of bytes, the same as all other files. Transferring it from one place to another is exactly the same: read some bytes, send them to the receiver, repeat until all bytes have been transferred.
Member 10328278 wrote: P.S.I eed full code
Sorry, but that's your job, we don't provide code to order.
Veni, vidi, abiit domum
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Upvoted... this has come up a lot, and not sure why someone would downvote since you still did answer the question.
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Thanks.
Albert Holguin wrote: not sure why someone would downvote
Probably because I did not provide the code for him.
Veni, vidi, abiit domum
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You need to use an input stream to read the bytes from the image file, and send that through a DataOutputStream/equivalent over the network, to your desired host.
Once the host receives the bytes, save to file with appropriate file extension.
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I want to add two Jpanel on my tabbed pane ,one should be in south with buttons,and other should be in north where I have Text fields and Labels.
My problem is that the buttons on container Jpanel is not showing in south.
Here is the code:
public class Mainframe extends JFrame
{
private static final long serialVersionUID = 1L;
JTabbedPane tabbedPane = new JTabbedPane();
JPanel jp1 = new JPanel();
JPanel container = new JPanel();
JFrame frame = new JFrame("TEST");
JButton button1 = new JButton("Button 1");
JButton button2 = new JButton("Button 2");
JButton button3 = new JButton("Button 3");
JButton button4 = new JButton("Button 4");
JButton button5 = new JButton("Button 5");
private Mainframe()
{
Container contentPane = getContentPane();
container.setLayout(new FlowLayout());
BufferedImage myPicture = null;
try
{
myPicture = ImageIO.read(new File("FINAL.jpg"));
}
catch (IOException e1)
{
e1.printStackTrace();
}
JLabel lbl = new JLabel(new ImageIcon(myPicture));
container.add(lbl);
container.add(button1);
container.add(button2);
container.add(button3);
container.add(button4);
container.add(button5);
jp1.add(container,BorderLayout.SOUTH);
frame.add(tabbedPane);
tabbedPane.addTab("First Tab",jp1);
frame.setPreferredSize(new Dimension(1500, 1210));
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setResizable(true);
frame.setVisible(true);
}
}
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It looks as though you have too many containers. Try simplifying your setup by adding one element at a time to see where it's going wrong. Start with the tab, then add a panel to the tab, then a single item to the panel etc.
Veni, vidi, abiit domum
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import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextField;
import javax.swing.UIManager;
public class Mainframe extends JFrame
{
private static final long serialVersionUID = 1L;
JTabbedPane tabbedPane = new JTabbedPane();
JPanel jp1 = new JPanel();
JPanel Firstpanel = new JPanel();
static JFrame frame = new JFrame("Create Company");
JButton button1 = new JButton("Button 1");
JButton button2 = new JButton("Button 2");
JButton button3 = new JButton("Button 3");
JButton button4 = new JButton("Button 4");
JButton button5 = new JButton("Button 5");
private Mainframe()
{
BufferedImage myPicture = null;
try
{
myPicture = ImageIO.read(new File("FINAL.jpg"));
}
catch (IOException e1)
{
e1.printStackTrace();
}
JLabel lbl = new JLabel(new ImageIcon(myPicture));
frame.add(tabbedPane);
jp1.add(Firstpanel,BorderLayout.SOUTH);
tabbedPane.addTab("New Employer",jp1);
Firstpanel.add(button1);
Firstpanel.add(button2);
Firstpanel.add(button3);
}
public static void main(String[] args)
{
frame.setPreferredSize(new Dimension(1500, 1210));
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setResizable(true);
frame.setVisible(true);
new Mainframe();
}
}
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Yes now I know my mistake,thank you 
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You need to tell the panel to use a border layout like:
jp1.setLayout(new BorderLayout());
jp1.add(Firstpanel,BorderLayout.SOUTH);
tabbedPane.addTab("New Employer",jp1);
Firstpanel.add(button1);
Firstpanel.add(button2);
Firstpanel.add(button3);
jp1.add(Secondpanel, BorderLayout.NORTH);
Secondpanel.add(button4);
Secondpanel.add(button5);
Veni, vidi, abiit domum
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Thank you for your help
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Hi All,
I am developing an ADF Mobile app in JDeveloper that should connect to Sql Server DB. I included a driver file in C:\Oracle\Middleware\jdeveloper\jdev\lib\sqljdbc4.jar but I am still getting error when I import java.sql.DriverManager.I even included sqljdbc4.jar file in project properties. Please help me solve this problem. Thanks.
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