ProLan FileGate

 

 

 

 

 

일주일동안 코딩하여 완성시킨

ProLan FileGate입니다.

 

 

 

 

 

아직 프로그래밍 실력이 미숙하여 알고리즘이 개떡(?)같을테니

소스는 되도록이면 보시지 않으시길 바랍니다..

 

 

client-filegate

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.util.Scanner;

 

import javax.swing.JOptionPane;

 

class filegate{
 static String[] head;
 static int count = 0;
 static OutputStream out;
 static DataOutputStream dout;
 static String ver = "1.0";
 
 
 public static void main(String[] args){
  Socket soc=null;
  String ip = null;
  try{
   FileInputStream fin = new FileInputStream("C:\\proLan\\filegate\\ip.txt");
   Scanner s = new Scanner(fin);
   ip = s.nextLine();
  }catch(Exception e){
   File f = new File("C:\\proLan\\filegate\\ip.txt");
   try {
    FileOutputStream fout = new FileOutputStream(f);
    PrintStream p = new PrintStream(fout);
    p.println("prolan.oa.to");
    ip = "prolan.oa.to";
   } catch (FileNotFoundException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
   }
   
  }
  try{
  soc = new Socket(ip, 25566);
  }catch(Exception e){
   String[] test = {"확인"};
   int rc = JOptionPane.showOptionDialog(null,
   "서버상태 : OFF",
   "ProLan FileGate!",
   0,
   JOptionPane.INFORMATION_MESSAGE,
   null,
   test,               
   test[0]);
   System.exit(0);
  }
  Input_Thread.run(soc);
  gui.go(soc);
 }
}

 

 

client-Input_Thread

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

import javax.swing.JOptionPane;

public class Input_Thread{
 static Socket soc;
 static InputStream in;
 static DataInputStream din = null;
 static OutputStream out;
 static DataOutputStream dout = null;
 
 
 public static void run(Socket s){
  try{
     soc = s;
     in = soc.getInputStream();
  din = new DataInputStream(in);
  out = soc.getOutputStream();
  dout = new DataOutputStream(out);
  }catch(Exception e){
  }
  
  int check = 25566;
  
  while(true){
   try{

   int input = din.readInt();
   switch(input){
   
   case 0:
    String[] test = {"확인"};

    int rc = JOptionPane.showOptionDialog(null,

    "서버에 남은자리가 없습니다!",

    "ProLan FileGate!",

    0,

    JOptionPane.INFORMATION_MESSAGE,

    null,

    test,               

    test[0]);
    System.exit(0);
    
   case 1:
    firstconn();
    dout.writeInt(check);
    continue;
   case 2:
    headlist();
    dout.writeUTF(filegate.ver);
    continue;
   case 5:
    updatefile();
    dout.writeInt(check);
    continue;
   case 6:
    firstconn2();
    dout.writeInt(check);
    continue;
   case 7:
    firstconn3();
    dout.writeInt(check);
    continue;
   case 10:
    return;
   }
   }catch(Exception e){
    System.err.println(e);
   }
  }
 }
 
 
 
 
 public static void firstconn(){
  try{
   FileOutputStream fo = new FileOutputStream("C:\\ProLan\\filegate\\share3.png");
   int bytes = 0;
   byte[] buffer = new byte[1024];
   
   int len;
   
   
   int i = din.readInt();
   for(;i>0;i--){
    len=in.read(buffer);
    fo.write(buffer,0,len);
    bytes += len;
   }
   fo.close();
      }catch(Exception e){
    System.err.println(e);
   }
 }
 
 
 
 public static void firstconn2(){
  try{
   FileOutputStream fo = new FileOutputStream("C:\\ProLan\\filegate\\img1.png");
   int bytes = 0;
   byte[] buffer = new byte[1024];
   
   int len;
   
   
   int i = din.readInt();
   for(;i>0;i--){
    len=in.read(buffer);
    fo.write(buffer,0,len);
    bytes += len;
   }
  }catch(Exception e){
   System.err.println(e);
  }
 }
 public static void firstconn3(){
  try{
   FileOutputStream fo = new FileOutputStream("C:\\ProLan\\filegate\\img2.png");
   int bytes = 0;
   byte[] buffer = new byte[1024];
   
   int len;
   
   
   
   int i = din.readInt();
   for(;i>0;i--){
    len=in.read(buffer);
    fo.write(buffer,0,len);
    bytes += len;
   }
   
  }catch(Exception e){
   System.err.println(e);
  }
 }
 
 
 
 public static void headlist()throws Exception{
  String head;
  InputStream in = soc.getInputStream();
  DataInputStream din = new DataInputStream(in);
  int arr = din.readInt();
  filegate.head = new String[arr];
  
  
  while(!(head = din.readUTF()).equalsIgnoreCase("exit")){
   filegate.head[filegate.count] = head;
   filegate.count++;
  }
 }
 
 public static void updatefile()throws Exception{
  FileOutputStream fo = new FileOutputStream("prolan_FileGate.java");
  int bytes = 0;
  byte[] buffer = new byte[1024];
  
  int len;
  
  
  int i = din.readInt();
  for(;i>0;i--){
   len=in.read(buffer);
   fo.write(buffer,0,len);
   bytes += len;
  }
  
  
  String[] test = {"확인"};

  int rc = JOptionPane.showOptionDialog(null,

  "업데이트가 완료되었습니다. 재시작해주십시요",

  "ProLan FileGate!",

  0,

  JOptionPane.INFORMATION_MESSAGE,

  null,

  test,               

  test[0]);
  System.exit(0);
 }

}

 

client-gui

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JComboBox;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.ImageIcon;

 

import java.awt.Color;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;public class gui{
 private static JTextField textField;
 static DataOutputStream dout;
 static OutputStream out;
 
 public static void go(Socket s){
  try{
   out = s.getOutputStream();
   dout = new DataOutputStream(out);
   
  }catch(Exception e){
   
  }
  JFrame main = new JFrame("ProLan File Gate");
  main.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  main.getContentPane().setLayout(null);
  
  JLabel label = new JLabel("\uD5E4\uB354\uD30C\uC77C : ");
  label.setBounds(23, 166, 88, 15);
  main.getContentPane().add(label);
  main.setSize(450,300);
  
  JLabel label_1 = new JLabel("\uD30C\uC77C\uC774\uB984 : ");
  label_1.setBounds(23, 194, 65, 15);
  main.getContentPane().add(label_1);
  
  JComboBox comboBox = new JComboBox(filegate.head); //콤보박스에 name 붙임
  comboBox.setBounds(96, 163, 129, 21);
  main.getContentPane().add(comboBox);
  
  textField = new JTextField();
  textField.setBounds(96, 191, 129, 21);
  main.getContentPane().add(textField);
  textField.setColumns(10);
  
  JButton button = new JButton("");
  button.addMouseListener(new MouseAdapter() {
   @Override
   public void mouseClicked(MouseEvent arg0) {
    String filename = textField.getText();
    if(filename.equalsIgnoreCase("")){
     return;
    }
    textField.setText("");
    String header = comboBox.getSelectedItem().toString();
    fileout(filename,header);
   }
  });
  button.setForeground(Color.WHITE);
  button.setIcon(new ImageIcon("C:\\proLan\\filegate\\share3.png"));
  button.setBounds(237, 152, 185, 99);
  main.getContentPane().add(button);
  
  JLabel label_2 = new JLabel("");
  label_2.setIcon(new ImageIcon("C:\\proLan\\filegate\\img1.png"));
  label_2.setBounds(136, 10, 168, 132);
  main.getContentPane().add(label_2);
  
  JLabel label_3 = new JLabel("");
  label_3.setIcon(new ImageIcon("C:\\proLan\\filegate\\img2.PNG"));
  label_3.setBounds(12, 10, 410, 132);
  main.getContentPane().add(label_3);
  main.setVisible(true);
 }
 
 
 
 
 public static void fileout(String filename, String header){
  try{
      FileInputStream in = new FileInputStream(filename);
   dout.writeInt(1);
   dout.writeUTF(filename);
   dout.writeUTF(header);
      System.out.println(filename+"  "+header);
  
  
      int bytes = 0;
  byte[] buffer = new byte[1024];
  int len;
  int data=0;
  
  while((len = in.read(buffer))>0){
   data++;
  }
  
  in.close();
  in = new FileInputStream(filename);
  dout.writeInt(data);
  
   len = 0;
  
  for(;data>0;data--){
   len = in.read(buffer);
   out.write(buffer,0,len);
   bytes += len;
  }
  
  out.flush();
  in.close();
  }catch(Exception e){
   String[] test = {"확인"};

 

   int rc = JOptionPane.showOptionDialog(null,   "파일전송에 실패하였습니다",

   "ProLan FileGate!",

   0,

   JOptionPane.INFORMATION_MESSAGE,

   null,

   test,                

   test[0]);
  }
 }
}     

 

 

server-ServerMain

import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Calendar;
import java.util.Scanner;

public class ServerMain{
 static ServerSocket server;
 static Socket[] client = new Socket[100];
 static Socket soc;
 static String[] ip;
 static String ver = "1.0";
 static DataInputStream din;
 static InputStream in;
 static File javafile = new File("C:\\Users\\김성래\\Desktop\\proLan\\save\\datafile\\prolan.java");
 static File share = new File("C:\\Users\\김성래\\Desktop\\proLan\\save\\datafile\\share3.png");
 static File img1 = new File("C:\\Users\\김성래\\Desktop\\proLan\\save\\datafile\\img1.png");
 static File img2 = new File("C:\\Users\\김성래\\Desktop\\proLan\\save\\datafile\\img2.png");
 static File ips = new File("C:\\Users\\김성래\\Desktop\\proLan\\save\\ips.txt");
 static File consol;
 static BufferedWriter bw,ipw;
 static PrintWriter files,ipp;
 
 
 public static void main(String[] args){
  File fin = new File("C:\\Users\\김성래\\Desktop\\proLan\\users.txt");
  gui.gui();
  try{
   consol = new File("C:\\Users\\김성래\\Desktop\\proLan\\save\\MainServer.txt");
      bw = new BufferedWriter(new FileWriter(consol, true));
      files = new PrintWriter(bw,true);
      ipw = new BufferedWriter(new FileWriter(ips, true));
      ipp = new PrintWriter(ipw,true);
  }catch(Exception e){
   e.printStackTrace();
  }
  try{
   server = new ServerSocket(25566);
  }catch(Exception e){
   System.err.println(e);
  }
  Calendar cal = Calendar.getInstance();
  String day = (cal.get(Calendar.YEAR)+"년 "+cal.get(Calendar.MONTH)+"월 "+cal.get(Calendar.DAY_OF_MONTH)+"일 "+cal.get(Calendar.HOUR_OF_DAY)+"시 : Server Start!").toString();
  System.out.println(cal.get(Calendar.YEAR)+"년 "+cal.get(Calendar.MONTH)+"월 "+cal.get(Calendar.DAY_OF_MONTH)+"일 "+cal.get(Calendar.HOUR_OF_DAY)+"시 : Server Start!");
  files.write("\r\n\r\n\r\n"+cal.get(Calendar.YEAR)+"년 "+cal.get(Calendar.MONTH)+"월"+cal.get(Calendar.DAY_OF_MONTH)+"일 "+cal.get(Calendar.HOUR_OF_DAY)+"시 : Server Start!\r\n");
  files.flush();
  gui.change(day);
  while(true){
   int points = 0;
   try{
   soc = server.accept();
   System.out.println("client cannect! :" + soc.getInetAddress().getHostAddress());
   gui.change("client cannect! :" + soc.getInetAddress().getHostAddress());
   files.write("client cannect! :" + soc.getInetAddress().getHostAddress()+"\r\n");
   files.flush();
   in=soc.getInputStream();
   din = new DataInputStream(in);
   boolean point=false;
   for(int i=0; i <100; i++){
    if(client[i]==null){
     point=true;
     points = i;
     break;
    }
   }
   
   
   if(!point){
    OutputStream out = soc.getOutputStream();
    DataOutputStream dout = new DataOutputStream(out);
    dout.writeInt(0);
    System.out.println("not have list");
    gui.change("not have list");
    files.write("not have list"+"\r\n");
    files.flush();
    
   }
   
   
   boolean firstconn=true;
   try{
   String ips = soc.getLocalAddress().getHostAddress();
   
   Scanner finss = new Scanner(fin);
   String read;
   while(finss.hasNextLine()){
    read=finss.nextLine();
    if(ips.equalsIgnoreCase(read)){
     firstconn=false;
     break;
    }
   }
   }catch(Exception e){
    }
   
   OutputStream out = soc.getOutputStream();
   DataOutputStream dout = new DataOutputStream(out);
   if(firstconn){
    ipp.write(soc.getLocalAddress().getHostAddress()+"\r\n");
    ipp.flush();
    System.out.println(soc.getLocalAddress().getHostAddress()+": welecome! first guest!");
    gui.change(soc.getLocalAddress().getHostAddress()+": welecome! first guest!");
    files.write(soc.getLocalAddress().getHostAddress()+": welecome! first guest!"+"\r\n");
    files.flush();
    firstconns();
    
    int check = din.readInt();
    dout.writeInt(6);
    firstconn();
    check = din.readInt();
    firstconnss();
    check = din.readInt();
   }
   
   }catch(Exception e){
    System.err.println(e);
    try {
     soc.close();
     continue;
    } catch (IOException e1) {
     // TODO Auto-generated catch block
     e1.printStackTrace();
    }
   }
   
   try {
    headlist();
   } catch (Exception e2) {
    e2.printStackTrace();
   }
   
   try{
    InputStream in = soc.getInputStream();
    DataInputStream din = new DataInputStream(in);
    OutputStream out = soc.getOutputStream();
    DataOutputStream dout = new DataOutputStream(out);
    String client_Ver = din.readUTF();
    if(client_Ver.equalsIgnoreCase(ver)){
     System.out.println(soc.getLocalAddress().getHostAddress()+": Ver is same");
     gui.change(soc.getLocalAddress().getHostAddress()+": Ver is same");
     files.write(soc.getLocalAddress().getHostAddress()+": Ver is same"+"\r\n");
     files.flush();
    }else{
     System.out.println("Client Ver :"+client_Ver);
     dout.writeInt(5);
     update();
    }
    
   }catch(Exception e){
    System.err.println(e);
   }
   
   
   try{
   OutputStream out = soc.getOutputStream();
   DataOutputStream dout = new DataOutputStream(out);
   System.out.println(soc.getLocalAddress().getHostAddress()+": gui open!");
   gui.change(soc.getLocalAddress().getHostAddress()+": gui open!");
   files.write(soc.getLocalAddress().getHostAddress()+": gui open!"+"\r\n");
   files.flush();
   dout.writeInt(10);
   }catch(Exception e){ 
   }
   client[points] = soc;
   client_Thread s = new client_Thread(soc,points);
   s.run();
   
  }
 }
 
 public static void update()throws Exception{
  OutputStream out = soc.getOutputStream();
  DataOutputStream dout = new DataOutputStream(out);
  dout.writeInt(5);
  FileInputStream verfin = new FileInputStream(javafile);
  
  int bytes = 0;
  byte[] buffer = new byte[1024];
  int len;
  int data=0;
  while((len = verfin.read(buffer))>0){
   data++;
  }
  verfin.close();
  in = new FileInputStream(javafile);
  dout.writeInt(data);
  
  long datas=0;
  while((len = verfin.read(buffer))>0){
   out.write(buffer,0,len);
   bytes += len;
   datas++;
  }
  System.out.println("약 "+datas+" kbps");
  gui.change("약 "+datas+" kbps");
  files.write("약 "+datas+" kbps"+"\r\n");
  files.flush();
  out.flush();
  in.close();
  out.flush();
 }
 
 public static void firstconns()throws Exception{
  OutputStream out = soc.getOutputStream();
  DataOutputStream dout = new DataOutputStream(out);
  FileInputStream in = new FileInputStream(share);
  dout.writeInt(1);
  
  int bytes = 0;
  byte[] buffer = new byte[1024];
  int len;
  int data=0;
  while((len = in.read(buffer))>0){
   data++;
  }
  in.close();
  in = new FileInputStream(share);
  dout.writeInt(data);
  
   len = 0;
  
  long datas=0;
  while((len = in.read(buffer))>0){
   out.write(buffer,0,len);
   bytes += len;
   datas++;
  }
  System.out.println("약 "+datas+" kbps");
  gui.change("약 "+datas+" kbps");
  files.write("약 "+datas+" kbps"+"\r\n");
  files.flush();
  out.flush();
  in.close();
  out.flush();
 }
 
 
 public static void firstconn()throws Exception{

  OutputStream out = soc.getOutputStream();
  DataOutputStream dout = new DataOutputStream(out);
  FileInputStream in = new FileInputStream(img1);
  
  int bytes = 0;
  byte[] buffer = new byte[1024];
  int len;
  int data=0;
  while((len = in.read(buffer))>0){
   data++;
  }
  in.close();
  in = new FileInputStream(img1);
  dout.writeInt(data);
  
  long datas=0;
  while((len = in.read(buffer))>0){
   out.write(buffer,0,len);
   bytes += len;
   datas++;
  }
  System.out.println("약 "+datas+" kbps");
  gui.change("약 "+datas+" kbps");
  files.write("약 "+datas+" kbps"+"\r\n");
  files.flush();
  out.flush();
  in.close();
  out.flush();
 }
 public static void firstconnss()throws Exception{
  OutputStream out = soc.getOutputStream();
  DataOutputStream dout = new DataOutputStream(out);
  FileInputStream in = new FileInputStream(img2);
  dout.writeInt(7);
  
  int bytes = 0;
  byte[] buffer = new byte[1024];
  int len;
  int data=0;
  while((len = in.read(buffer))>0){
   data++;
  }
  in.close();
  in = new FileInputStream(img2);
  dout.writeInt(data);
  
  long datas=0;
  while((len = in.read(buffer))>0){
   out.write(buffer,0,len);
   bytes += len;
   datas++;
  }
  System.out.println("약 "+datas+" kbps");
  gui.change("약 "+datas+" kbps");
  files.write("약 "+datas+" kbps"+"\r\n");
  files.flush();
  out.flush();
  in.close();
 }
 
 public static void headlist()throws Exception{
  OutputStream out = soc.getOutputStream();
  DataOutputStream dout = new DataOutputStream(out);
  FileInputStream fin = new FileInputStream("C:\\Users\\김성래\\Desktop\\proLan\\headlist.txt");
  dout.writeInt(2);
  Scanner s = new Scanner(fin);
  String header;
  int count = 0;
  while(s.hasNext()){
   s.next();
   count++;
  }
  fin.close();
  s.close();
  dout.writeInt(count);
  FileInputStream fins = new FileInputStream("C:\\Users\\김성래\\Desktop\\proLan\\headlist.txt");
  Scanner s2 = new Scanner(fins);
  
  for(int i = count;i>0;i--){
   header=s2.next();
   dout.writeUTF(header);
  }
  dout.writeUTF("exit");
  fins.close();
  s2.close();
 }

}

 

 

server-Client_Thread

 

     import java.io.DataInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.io.DataOutputStream;

 

 

public class client_Thread extends Thread{
 Socket client;
 int point;
 String ip;
 client_Thread(Socket c, int po){
  client = c;
  point = po;
  ip = client.getLocalAddress().getHostAddress();
 }

 

 public void run(){
  int input;
  InputStream in=null;
  DataInputStream din = null;
  OutputStream out=null;
  DataOutputStream dout=null;
  try{
  in = client.getInputStream();
  din = new DataInputStream(in);
  out = client.getOutputStream();
  dout = new DataOutputStream(out);
  }catch(Exception e){
   System.err.println(e);
   return;
  }
  
  try{
  while(true){
   input = din.readInt();
   if(input==1){
    filein();
   }
   }
  }catch(Exception e){
   System.out.println(ip+": exit");
   gui.change(ip+": exit");
   ServerMain.files.write(ip+": exit"+"\r\n");
   ServerMain.files.flush();
   ServerMain.client[point] = null;
   return;
  }
 }
 
 
 public void filein(){
  try{
  System.out.println(ip+": filein");
  gui.change(ip+": filein");
  ServerMain.files.write(ip+": filein"+"\r\n");
  ServerMain.files.flush();
  InputStream in=null;
  DataInputStream din = null;
  in = client.getInputStream();
  din = new DataInputStream(in);
  
  String filename,head;
  filename = din.readUTF();
  head = din.readUTF();
  FileOutputStream fo = new FileOutputStream("C:\\Users\\김성래\\Desktop\\proLan\\"+head+"\\"+filename);
  int data = din.readInt();
  int bytes = 0;
  byte[] buffer = new byte[1024];
  long datas=0;
  
  int len;
  
  
  for(;data >0;data--){
   len=in.read(buffer);
   fo.write(buffer,0,len);
   bytes += len;
   datas++;
  }
  System.out.println(ip+": "+head+"\\"+filename);
  gui.change(ip+": "+head+"\\"+filename);
  ServerMain.files.write(ip+": "+head+"\\"+filename+"\r\n");
  ServerMain.files.flush();
  System.out.println("약 "+datas+" kbps");
  gui.change("약 "+datas+" kbps");
  ServerMain.files.write("약 "+datas+" kbps"+"\r\n");
  ServerMain.files.flush();
  
  fo.flush();
  fo.close();
  }catch(Exception e){
   e.printStackTrace();
  }
 }
}

 

client-gui

 import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;

import javax.swing.JFrame;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.ScrollPaneConstants;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class gui {
 static JFrame main;
 static boolean scrollpanemove = false;
 static JScrollPane scrollPane;
 static JTextArea textArea;
 private static JButton btnNewButton;
 
 /**
  * @wbp.parser.entryPoint
  */
 public static void gui(){
  main = new JFrame("Pro Lan FileGate - Server");
  main.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  main.getContentPane().setLayout(null);
  main.setSize(450, 300);
  
  textArea = new JTextArea();
  textArea.setEnabled(false);
  
  scrollPane = new JScrollPane(textArea, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
  scrollPane.addMouseWheelListener(new MouseWheelListener() {
   public void mouseWheelMoved(MouseWheelEvent arg0) {
    scrollpanemove=true;
   }
  });
  
  
  scrollPane.getVerticalScrollBar().addAdjustmentListener(new AdjustmentListener() {
   
   @Override
   public void adjustmentValueChanged(AdjustmentEvent arg0) {
    // TODO Auto-generated method stub
    if(scrollpanemove){
     scrollpanemove = false;
    }else{
    JScrollBar src = (JScrollBar)arg0.getSource();
    src.setValue(src.getMaximum());
    }
   }
  });
  scrollPane.setViewportView(textArea);
  scrollPane.setBounds(12, 10, 410, 206);
  main.getContentPane().add(scrollPane);
  
  btnNewButton = new JButton("\uC11C\uBC84\uC885\uB8CC");
  btnNewButton.addMouseListener(new MouseAdapter() {
   @Override
   public void mouseClicked(MouseEvent arg0) {
    System.exit(0);
   }
  });
  btnNewButton.setBounds(12, 226, 410, 23);
  main.getContentPane().add(btnNewButton);
  main.setVisible(true);
 }
 
 public static void change(String i){
  textArea.append("\n"+i);
  scrollPane.contains(0, 10);
 }
}