Java

<form action="Testare" method="GET">
    First name:<br> <input type="text" name="firstName"><br>
    Last name:<br> <input type="text" name="lastName"><br>
    <br> <input type="submit" value="Submit">
</form>

System.out.println("First name: " + request.getParameter("firstName") + "\nLast name: "
        + request.getParameter("lastName"));
response.sendRedirect("Test.html");

package PaketX;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import javax.swing.JPanel;
@SuppressWarnings("serial")
class P06 extends JPanel implements ComponentListener {
	int width = 800, height = 600;
	Color AtaRasgeleRenk() {
		int r = (int)(256*Math.random());
        int g = (int)(256*Math.random());
        int b = (int)(256*Math.random());
        return new Color(r,g,b);
	}
	public P06() {
		setPreferredSize(new Dimension(width, height));
		addComponentListener(this);
	}
	@Override
	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		int i, j, m = 7, n = 9;
		int x, w = Math.round((float)width/n);
		int y, h = Math.round((float)height/m);
		for(i = 0; i < n; i++) {
			x = i*w;
			for(j = 0; j < m; j++) {
				y = j*h;
				g.setColor(AtaRasgeleRenk());
				g.fillRect(x, y, w, h);
			}
		}
	}
	@Override
	public void componentResized(ComponentEvent e) {
		width = getWidth();
		height = getHeight();
	}
	@Override
	public void componentHidden(ComponentEvent e) {}
	@Override
	public void componentMoved(ComponentEvent e) {}
	@Override
	public void componentShown(ComponentEvent e) {}
}

Your post appears to contain code that is not properly formatted as code. Please indent all code by 4 spaces using the code toolbar button or the CTRL+K keyboard shortcut. For more editing help, click the [?] toolbar icon.

URL url = new URL("https://www.google.com/");
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new InputSource(httpURLConnection.getInputStream()));
NodeList noteList = doc.getElementsByTagName("anElement");

java[1133:134799] unrecognized type is 4294967295
02
    java[1133:134799] *** Assertion failure in -[NSEvent _initWithCGEvent:eventRef:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppKit/AppKit-1671.10.106/AppKit.subproj/NSEvent.m:1969
03
    java[1133:134799] unrecognized type is 4294967295
04
    java[1133:134799] *** Assertion failure in -[NSEvent _initWithCGEvent:eventRef:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppKit/AppKit-1671.10.106/AppKit.subproj/NSEvent.m:1969
05
    java[1133:134799] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: _type > 0 && _type <= kCGSLastEventType'
06
*** First throw call stack:
07
(
08
    0   CoreFoundation                      0x00007fff37e04e65 __exceptionPreprocess + 256
09
    1   libobjc.A.dylib                     0x00007fff63e5b720 objc_exception_throw + 48
10
    2   CoreFoundation                      0x00007fff37e1fab2 +[NSException raise:format:arguments:] + 98
11
    3   Foundation                          0x00007fff3a1c3d1d -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 194
12
    4   AppKit                              0x00007fff352ac029 -[NSEvent _initWithCGEvent:eventRef:] + 3272
13
    5   AppKit                              0x00007fff355ff74c +[NSEvent eventWithCGEvent:] + 120
14
    6   libglass.dylib                      0x000000011c0086fb listenTouchEvents + 59
15
    7   SkyLight                            0x00007fff5df1141e _ZL19processEventTapDataPvjjjPhj + 148
16
    8   SkyLight                            0x00007fff5de0fc9e _XPostEventTapData + 278
17
    9   SkyLight                            0x00007fff5df1132c _ZL22eventTapMessageHandlerP12__CFMachPortPvlS1_ + 132
18
    10  CoreFoundation                      0x00007fff37d657cf __CFMachPortPerform + 282
19
    11  CoreFoundation                      0x00007fff37d656a9 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
20
    12  CoreFoundation                      0x00007fff37d65607 __CFRunLoopDoSource1 + 527
21
    13  CoreFoundation                      0x00007fff37d4d689 __CFRunLoopRun + 2574
22
    14  CoreFoundation                      0x00007fff37d4ca28 CFRunLoopRunSpecific + 463
23
    15  HIToolbox                           0x00007fff36fe5b35 RunCurrentEventLoopInMode + 293
24
    16  HIToolbox                           0x00007fff36fe5774 ReceiveNextEventCommon + 371
25
    17  HIToolbox                           0x00007fff36fe55e8 _BlockUntilNextEventMatchingListInModeWithFilter + 64
26
    18  AppKit                              0x00007fff352a1eb7 _DPSNextEvent + 997
27
    19  AppKit                              0x00007fff352a0c56 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1362
28
    20  libglass.dylib                      0x000000011bff646c +[GlassApplication enterNestedEventLoopWithEnv:] + 172
29
    21  libglass.dylib                      0x000000011bff6eaa Java_com_sun_glass_ui_mac_MacApplication__1enterNestedEventLoopImpl + 74
30
    22  ???                                 0x0000000106546667 0x0 + 4401161831
31
    23  ???                                 0x0000000106536040 0x0 + 4401094720
32
)
33
libc++abi.dylib: terminating with uncaught exception of type NSException
34
Java Result: 134

public class ServerController {
002
 
003
@FXML
004
private TextArea textarea;
005
 
006
private StringBuilder contenutoTextArea = new StringBuilder("");
007
 
008
private ServerSocket s;
009
 
010
public void initModel() throws IOException {
011
    contenutoTextArea.append("Waiting for connections\n");
012
    textarea.setText(contenutoTextArea.toString());
013
    s = new ServerSocket(5000);
014
    new Thread() {
015
        @Override
016
        public void run() {
017
            while (true) {
018
                try {
019
                    new ThreadedEchoHandler(s);
020
                } catch (IOException ex) {
021
                    Thread.currentThread().interrupt();
022
                    return;
023
                }
024
            }
025
        }
026
    }.start();
027
}
028
 
029
class ThreadedEchoHandler implements Runnable {
030
 
031
    private Socket incoming;
032
 
033
    private String nomeAccount = "";
034
 
035
    ThreadedEchoHandler(ServerSocket serv) throws IOException {
036
        incoming = serv.accept();
037
        new Thread(this).start();
038
    }
039
 
040
    public void run() {
041
        contenutoTextArea.append("Connected from: " + incoming.getLocalAddress() + "\n");
042
        textarea.setText(contenutoTextArea.toString());
043
        try {
044
            //PHASE 1: The server receives the email
045
            try {
046
                BufferedReader in = new BufferedReader(new InputStreamReader(incoming.getInputStream()));
047
                nomeAccount = in.readLine();
048
            } catch (IOException ex) {
049
                System.out.println("Not works");
050
            }
051
 
052
            //PHASE 2: I'm getting all the emails from the files
053
            File dir = new File("src/server/" + nomeAccount);
054
            String[] tmp = new String[100];
055
            int i = 0;
056
            for (File file : dir.listFiles()) {
057
                if (file.isFile() && !(file.getName().equals(".DS_Store"))) {
058
                    try (BufferedReader br = new BufferedReader(new FileReader(file))) {
059
                        String line;
060
                        while ((line = br.readLine()) != null) {
061
                            tmp[i++] = line;
062
                        }
063
                        br.close();
064
                    } catch (IOException ex) {
065
                        System.out.println("Cannot read from file");
066
                    }
067
                }
068
            }
069
 
070
            //PHASE 3: The server sends the ArrayList to the client
071
            PrintWriter out = new PrintWriter(incoming.getOutputStream(), true);
072
            for (int j = 0; j < i; j++) {
073
                out.println(tmp[j]); // send the strings to the client
074
            }
075
            out.println("Fine");
076
 
077
        } catch (IOException ex) {
078
            System.out.println("Cannot send the strings to the client");
079
        }
080
 
081
        //PHASE 4: Here I loop and wait for the client choise
082
        BufferedReader in;
083
        String op;
084
        boolean exit = false;
085
        try {
086
            in = new BufferedReader(new InputStreamReader(incoming.getInputStream()));
087
            while (!exit && ((op = in.readLine()) != null)) {
088
                if (op.equals("Fine")) {
089
                    exit = true;
090
                    contenutoTextArea.append("Connection closed.\n");
091
                    textarea.setText(contenutoTextArea.toString());
092
                } else {
093
                    try {
094
                        clientChoise(in, op);
095
 
096
                    } catch (IOException ex) {
097
                        System.out.println("Wrong user input");
098
                    }
099
                }
100
            }
101
        } catch (IOException ex) {
102
            System.out.println("Unable to read messages");
103
        } finally {
104
            try {
105
                incoming.close();
106
                Thread.currentThread().interrupt();
107
                return;
108
            } catch (IOException ex) {
109
                System.out.println("Cannot close the socket");
110
            }
111
        }
112
    }

java[1133:134799] unrecognized type is 429496729502
2
java[1133:134799] *** Assertion failure in -[NSEvent _initWithCGEvent:eventRef:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppKit/AppKit1671.10.106/AppKit.subproj/NSEvent.m:1969

java.net.SocketException: Socket closed
02
    at java.net.SocketInputStream.socketRead0(Native Method)
03
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
04
    at java.net.SocketInputStream.read(SocketInputStream.java:171)
05
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
06
    at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
07
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
08
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
09
    at java.io.InputStreamReader.read(InputStreamReader.java:184)
10
    at java.io.BufferedReader.fill(BufferedReader.java:161)
11
    at java.io.BufferedReader.readLine(BufferedReader.java:324)
12
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
13
    at mailbox.DataModel.askNumbOfEmail(DataModel.java:188)
14
    at mailbox.ListController$2.run(ListController.java:65)

public class DataModel {
002
 
003
    private final String account = "alessandro@gmail.com";
004
 
005
    private ObservableList<Email> emailList = FXCollections.observableArrayList(email
006
            -> new Observable[]{email.IDProperty(), email.MittenteProperty()});
007
 
008
    private final ObjectProperty<Email> currentEmail = new SimpleObjectProperty<>(null);
009
 
010
    public ObjectProperty<Email> currentEmailProperty() {
011
        return currentEmail;
012
    }
013
 
014
    public final Email getCurrentEmail() {
015
        return currentEmailProperty().get();
016
    }
017
 
018
    public final String getAccountName() {
019
        return account;
020
    }
021
 
022
    public final void setCurrentEmail(Email email) {
023
        currentEmailProperty().set(email);
024
    }
025
 
026
    public ObservableList<Email> getEmailList() {
027
        return emailList;
028
    }
029
 
030
    private Socket s;
031
 
032
    public void connect() throws IOException {
033
        try {
034
            s = new Socket("127.0.0.1", 5000);
035
        } catch (IOException io) {}
036
    }
037
 
038
    public Socket getSocket() {
039
        return s;
040
    }
041
 
042
    private int numberOfEmail = 0;
043
 
044
    public int getNumberOfEmail() {
045
        return numberOfEmail;
046
    }
047
 
048
    public void loadData() throws IOException, ClassNotFoundException, ParseException {
049
 
050
        try {
051
            if (s == null || !isConnected()) {
052
                connect();
053
            }
054
            ArrayList<Email> email = new ArrayList<Email>();
055
            DateFormat format = new SimpleDateFormat("dd/MM/yyyy", new Locale("it", "IT"));
056
            Date data;
057
 
058
            /* PHASE 1: The client sends a string to the server */
059
            try {
060
                PrintWriter out = new PrintWriter(s.getOutputStream(), true);
061
                out.println(account + "\n"); // send the account name to server
062
 
063
                /* PHASE 2: The client receives the ArrayList with the emails */
064
                BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
065
                String line;
066
                String message[] = new String[5];
067
                for (int j = 0; ((line = in.readLine()) != null) && (!line.equals("Fine"));)/> {
068
                    message[j++] = line;
069
                    if (j == 5) {
070
                        data = format.parse(message[3]);
071
                        email.add(new Email((Integer.parseInt(message[0])), message[1], account, message[2], message[4], data));
072
                        numberOfEmail++;
073
                        j = 0;
074
                    }
075
                }
076
 
077
                //Casting the arrayList
078
                emailList = FXCollections.observableArrayList(email);
079
 
080
                //Sorting the emails
081
                Collections.sort(emailList, (Email o1, Email o2) -> {
082
                    if (o1.getData() == null || o2.getData() == null) {
083
                        return 0;
084
                    }
085
                    return o1.getData().compareTo(o2.getData());
086
                });
087
            } finally {
088
                System.out.println("Data Loaded");
089
            }
090
        } catch (SocketException se) {
091
            se.printStackTrace();
092
            emailList.setAll(null, null);
093
        }
094
    }
095
 
096
    public void reLoadData() throws ParseException, IOException {
097
        PrintWriter out = new PrintWriter(s.getOutputStream(), true);
098
        out.println("Reload");
099
        BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
100
        String line;
101
        String message[] = new String[5];
102
        ArrayList<Email> email = new ArrayList<Email>();
103
        DateFormat format = new SimpleDateFormat("dd/MM/yyyy");
104
        Date data;
105
        for (int j = 0; ((line = in.readLine()) != null) && (!line.equals("Fine"));)/> {
106
            message[j++] = line;
107
            if (j == 5) {
108
                data = format.parse(message[3]);
109
                email.add(new Email((Integer.parseInt(message[0])), message[1], account, message[2], message[4], data));
110
                j = 0;
111
            }
112
        }
113
 
114
        //Casting the arrayList
115
        emailList = FXCollections.observableArrayList(email);
116
 
117
        //Sorting the emails
118
        Collections.sort(emailList, (Email o1, Email o2) -> {
119
            if (o1.getData() == null || o2.getData() == null) {
120
                return 0;
121
            }
122
            return o1.getData().compareTo(o2.getData());
123
        });
124
    }
125
 
126
    public void deleteMail(Email da_elim) throws IOException {
127
        Socket p = getSocket();
128
        int id_del = da_elim.getID();
129
        emailList.remove(da_elim);
130
        PrintWriter out = new PrintWriter(p.getOutputStream(), true);
131
        out.println("Elimina");
132
        out.println(Integer.toString(id_del));
133
    }
134
 
135
    public void closeConnection() throws IOException {
136
        Socket p = getSocket();
137
        PrintWriter out = new PrintWriter(p.getOutputStream(), true);
138
        out.println("Fine");
139
        p.close();
140
    }
141
 
142
    public void writeMail(String[] mail) throws IOException {
143
        Socket p = getSocket();
144
        PrintWriter out = new PrintWriter(p.getOutputStream(), true);
145
        out.println("Scrivi");
146
        for (int j = 0; j < mail.length; j++) {
147
            out.println(mail[j]); // sends the mail to the server
148
        }
149
        out.println("Stop");
150
 
151
    }
152
 
153
    public int askNumbOfEmail() throws IOException {
154
        Socket p = getSocket();
155
        PrintWriter out = new PrintWriter(p.getOutputStream(), true);
156
        out.println("Numb");
157
        BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
158
        return Integer.parseInt(in.readLine());
159
 
160
    }
161
 
162
    public boolean isConnected() {
163
        return getSocket()==null || getSocket().isConnected();
164
    }
165
}

public class ListController {
02
 
03
    @FXML
04
    private ListView<Email> listView;
05
    private DataModel model;
06
    public int emailForClient;
07
 
08
    public void initModel(DataModel model) throws IOException, ClassNotFoundException, ParseException {
09
        if (this.model != null) {
10
            throw new IllegalStateException("Model can only be initialized once");
11
        }
12
        this.model = model;
13
 
14
        model.loadData();
15
 
16
        listView.setItems(model.getEmailList());
17
 
18
        listView.getSelectionModel().selectedItemProperty().addListener((obs, oldSelection, newSelection)
19
                -> model.setCurrentEmail(newSelection));
20
        model.currentEmailProperty().addListener((obs, oldEmail, newEmail) -> {
21
            if (newEmail == null) {
22
                listView.getSelectionModel().clearSelection();
23
            } else {
24
                listView.getSelectionModel().select(newEmail);
25
            }
26
        });
27
 
28
        listView.setCellFactory(lv -> new ListCell<Email>() {
29
            @Override
30
            public void updateItem(Email mail, boolean empty) {
31
                super.updateItem(mail, empty);
32
                if (empty) {
33
                    setText(null);
34
                } else if (mail != null) {
35
                    setText(mail.getMittente());
36
                }
37
            }
38
        });
39
 
40
        emailForClient = model.getNumberOfEmail();
41
        new Thread() {
42
            @Override
43
            public void run() {
44
                while (true) {
45
                    try {
46
                        int currentOnServer = model.askNumbOfEmail();
47
                        if (emailForClient != currentOnServer) {
48
                            model.reLoadData();
49
                            final int currentEmail = emailForClient;
50
                            Platform.runLater(() -> {
51
                                listView.setItems(model.getEmailList());
52
                                if (currentOnServer > currentEmail) {
53
                                    new Alert(Alert.AlertType.INFORMATION, "You just received an email!").showAndWait();
54
                                }
55
                            });
56
                            emailForClient = currentOnServer;
57
                        }
58
                    } catch (IOException ex) {
59
                        ex.printStackTrace();
60
                        Thread.currentThread().interrupt();
61
                        return;
62
                    } catch (ParseException ex) {
63
                        ex.printStackTrace();
64
                        System.out.println("ParseException ERROR!");
65
                    }
66
                }
67
            }
68
        }.start();
69
    }
70
}