Example usage for java.lang StringBuffer StringBuffer

Introduction

In this page you can find the example usage for java.lang StringBuffer StringBuffer.

Prototype

@HotSpotIntrinsicCandidate
public StringBuffer() 

Source Link

Document

Constructs a string buffer with no characters in it and an initial capacity of 16 characters.

Usage

From source file:MainClass.java

public static void main(String[] args) {

    String hostname = "time.nist.gov";

    try {/*  ww  w.j  a  v a2 s  . c o m*/
        Socket theSocket = new Socket(hostname, 13);
        InputStream timeStream = theSocket.getInputStream();
        StringBuffer time = new StringBuffer();
        int c;
        while ((c = timeStream.read()) != -1)
            time.append((char) c);
        String timeString = time.toString().trim();
        System.out.println("It is " + timeString + " at " + hostname);
    } // end try
    catch (UnknownHostException ex) {
        System.err.println(ex);
    } catch (IOException ex) {
        System.err.println(ex);
    }

}

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From source file:Main.java

public static void main(String... args) throws IOException {
    URL url = new URL("http://java2s.com");
    InputStream is = url.openStream();
    BufferedReader br = new BufferedReader(new InputStreamReader(is));
    StringBuffer sb = new StringBuffer();

    String line;/*from   w w w . j ava2s  .  co  m*/

    while ((line = br.readLine()) != null)
        sb.append(line + System.lineSeparator());

    br.close();

    System.out.print(sb.toString());
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    // Create a manifest from a file
    InputStream fis = new FileInputStream("manifestfile");
    Manifest manifest = new Manifest(fis);

    // Construct a string version of a manifest
    StringBuffer sbuf = new StringBuffer();
    sbuf.append("Manifest-Version: 1.0\n");
    sbuf.append("\n");
    sbuf.append("Name: javax/swing/JScrollPane.class\n");
    sbuf.append("Java-Bean: True\n");

    // Convert the string to a input stream
    InputStream is = new ByteArrayInputStream(sbuf.toString().getBytes("UTF-8"));

    // Create the manifest
    manifest = new Manifest(is);
}

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From source file:Main.java

public static void main(String args[]) {
    Object objectRef = "hello";
    String string = "goodbye";
    char charArray[] = { 'a', 'b', 'c', 'd', 'e', 'f' };
    boolean booleanValue = true;
    char characterValue = 'K';
    int integerValue = 7;
    long longValue = 10000000;
    float floatValue = 2.5f;
    double doubleValue = 33.3;

    StringBuffer buffer = new StringBuffer();

    buffer.insert(0, objectRef);/*from w w  w . j  a  v  a  2  s. c  o  m*/
    buffer.insert(0, "  ");
    buffer.insert(0, string);
    buffer.insert(0, "  ");
    buffer.insert(0, charArray);
    buffer.insert(0, "  ");
    buffer.insert(0, charArray, 3, 3);
    buffer.insert(0, "  ");
    buffer.insert(0, booleanValue);
    buffer.insert(0, "  ");
    buffer.insert(0, characterValue);
    buffer.insert(0, "  ");
    buffer.insert(0, integerValue);
    buffer.insert(0, "  ");
    buffer.insert(0, longValue);
    buffer.insert(0, "  ");
    buffer.insert(0, floatValue);
    buffer.insert(0, "  ");
    buffer.insert(0, doubleValue);

    System.out.printf("buffer after inserts:\n%s\n\n", buffer.toString());

}

---

From source file:MainClass.java

public static void main(String args[]) {
    Object objectRef = "hello";
    String string = "goodbye";
    char charArray[] = { 'a', 'b', 'c', 'd', 'e', 'f' };
    boolean booleanValue = true;
    char characterValue = 'K';
    int integerValue = 7;
    long longValue = 10000000;
    float floatValue = 2.5f;
    double doubleValue = 33.3;

    StringBuffer buffer = new StringBuffer();

    buffer.insert(0, objectRef);//from www  .  jav a2s .  c  om
    buffer.insert(0, "  ");
    buffer.insert(0, string);
    buffer.insert(0, "  ");
    buffer.insert(0, charArray);
    buffer.insert(0, "  ");
    buffer.insert(0, charArray, 3, 3);
    buffer.insert(0, "  ");
    buffer.insert(0, booleanValue);
    buffer.insert(0, "  ");
    buffer.insert(0, characterValue);
    buffer.insert(0, "  ");
    buffer.insert(0, integerValue);
    buffer.insert(0, "  ");
    buffer.insert(0, longValue);
    buffer.insert(0, "  ");
    buffer.insert(0, floatValue);
    buffer.insert(0, "  ");
    buffer.insert(0, doubleValue);

    System.out.printf("buffer after inserts:\n%s\n\n", buffer.toString());

    buffer.deleteCharAt(10);
    buffer.delete(2, 6);

    System.out.printf("buffer after deletes:\n%s\n", buffer.toString());
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    XMLInputFactory xif = XMLInputFactory.newInstance();
    XMLEventReader xmlr = xif.createXMLEventReader((new FileInputStream(new File("./file.xml"))));

    boolean inline = false;
    StringBuffer sb = new StringBuffer();
    while (xmlr.hasNext()) {
        XMLEvent event = xmlr.nextEvent();

        if (event.isStartElement()) {
            StartElement element = (StartElement) event;
            if ("data".equals(element.getName().toString().trim())) {
                inline = true;/*  w  w w .ja v  a 2 s. co m*/
            }
        }

        if (inline) {
            sb.append(xmlr.peek());
        }

        if (event.isEndElement()) {
            EndElement element = (EndElement) event;
            if ("data".equals(element.getName().toString().trim())) {
                inline = false;
                System.out.println(sb.toString());
                sb.setLength(0);
            }
        }
    }
}

---

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    SSLServerSocketFactory ssf = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
    ServerSocket ss = ssf.createServerSocket(8080);

    while (true) {
        try {//w  w w  .  j a  v a 2  s . c o m
            Socket s = ss.accept();
            OutputStream out = s.getOutputStream();
            BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));

            String line = null;
            while (((line = in.readLine()) != null) && (!("".equals(line)))) {
                System.out.println(line);
            }
            StringBuffer buffer = new StringBuffer();
            buffer.append("<HTML><HEAD><TITLE>HTTPS Server</TITLE></HEAD>\n");
            buffer.append("<BODY>\n<H1>Success!</H1></BODY></HTML>\n");

            String string = buffer.toString();
            byte[] data = string.getBytes();
            out.write("HTTP/1.0 200 OK\n".getBytes());
            out.write(new String("Content-Length: " + data.length + "\n").getBytes());
            out.write("Content-Type: text/html\n\n".getBytes());
            out.write(data);
            out.flush();

            out.close();
            in.close();
            s.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

---

From source file:MethodInspector.java

public static void main(String[] arguments) {
    Class inspect;//from w ww.j  a  v  a2  s . c  o m
    try {
        if (arguments.length > 0)
            inspect = Class.forName(arguments[0]);
        else
            inspect = Class.forName("MethodInspector");
        Method[] methods = inspect.getDeclaredMethods();
        for (int i = 0; i < methods.length; i++) {
            Method methVal = methods[i];
            Class returnVal = methVal.getReturnType();
            int mods = methVal.getModifiers();
            String modVal = Modifier.toString(mods);
            Class[] paramVal = methVal.getParameterTypes();
            StringBuffer params = new StringBuffer();
            for (int j = 0; j < paramVal.length; j++) {
                if (j > 0)
                    params.append(", ");
                params.append(paramVal[j].getName());
            }
            System.out.println("Method: " + methVal.getName() + "()");
            System.out.println("Modifiers: " + modVal);
            System.out.println("Return Type: " + returnVal.getName());
            System.out.println("Parameters: " + params + "\n");
        }
    } catch (ClassNotFoundException c) {
        System.out.println(c.toString());
    }
}

---

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    SSLServerSocketFactory ssf = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
    SSLServerSocket ss = (SSLServerSocket) ssf.createServerSocket(8080);
    ss.setNeedClientAuth(true);/*from  w  w  w  .  j a v a2 s .  c  o  m*/

    while (true) {
        try {
            Socket s = ss.accept();
            OutputStream out = s.getOutputStream();
            BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
            String line = null;
            while (((line = in.readLine()) != null) && (!("".equals(line)))) {
                System.out.println(line);
            }
            System.out.println("");

            StringBuffer buffer = new StringBuffer();
            buffer.append("<HTML>\n");
            buffer.append("<HEAD><TITLE>HTTPS Server</TITLE></HEAD>\n");
            buffer.append("<BODY>\n");
            buffer.append("<H1>Success!</H1>\n");
            buffer.append("</BODY>\n");
            buffer.append("</HTML>\n");

            String string = buffer.toString();
            byte[] data = string.getBytes();
            out.write("HTTP/1.0 200 OK\n".getBytes());
            out.write(new String("Content-Length: " + data.length + "\n").getBytes());
            out.write("Content-Type: text/html\n\n".getBytes());
            out.write(data);
            out.flush();

            out.close();
            in.close();
            s.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

---

From source file:HTTPServer.java

public static void main(String[] args) throws Exception {

    ServerSocket sSocket = new ServerSocket(1777);
    while (true) {
        System.out.println("Waiting for a client...");
        Socket newSocket = sSocket.accept();
        System.out.println("accepted the socket");

        OutputStream os = newSocket.getOutputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(newSocket.getInputStream()));

        String inLine = null;/*from   www .  j  av a 2  s. com*/
        while (((inLine = br.readLine()) != null) && (!(inLine.equals("")))) {
            System.out.println(inLine);
        }
        System.out.println("");

        StringBuffer sb = new StringBuffer();
        sb.append("<html>\n");
        sb.append("<head>\n");
        sb.append("<title>Java \n");
        sb.append("</title>\n");
        sb.append("</head>\n");
        sb.append("<body>\n");
        sb.append("<H1>HTTPServer Works!</H1>\n");
        sb.append("</body>\n");
        sb.append("</html>\n");

        String string = sb.toString();

        byte[] byteArray = string.getBytes();

        os.write("HTTP/1.0 200 OK\n".getBytes());
        os.write(new String("Content-Length: " + byteArray.length + "\n").getBytes());
        os.write("Content-Type: text/html\n\n".getBytes());

        os.write(byteArray);
        os.flush();

        os.close();
        br.close();
        newSocket.close();
    }

}

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