Ventrix’s Code Folds

private String socketIP="192.168.1.1";
private int socketPort=2424;
private int timeout=5000; //5 seconds

Socket socket1 = new Socket();
socket1.connect(new InetSocketAddress(this.socketIP, this.socketPort), timeout);
//or else
Socket socket1 = new Socket();
socket1.connect(new InetSocketAddress(this.socketIP, this.socketPort));
socket1.setSoTimeout(timeout);

http://java.sun.com/j2se/1.4.2/docs/api/java/net/Socket.html

/**
          * Closes the specified stream.
          *
          * @param stream The stream to close.
          */
         private static void closeStream(Closeable stream) {
             if (stream != null) {
                 try {
                     stream.close();
                 } catch (IOException e) {
                     android.util.Log.e("IO", "Could not close stream", e);
                 }
             } 

Use it like: closeStream(in);

Copy the content of the input stream into the output stream

/**
     * Copy the content of the input stream into the output stream, using a temporary
     * byte array buffer whose size is defined by {@link #IO_BUFFER_SIZE}.
     *
     * @param in The input stream to copy from.
     * @param out The output stream to copy to.
     *
     * @throws IOException If any error occurs during the copy.
     */
private static final int IO_BUFFER_SIZE = 4 * 1024;

private static void copy(InputStream in, OutputStream out) throws IOException {
byte[] b = new byte[IO_BUFFER_SIZE];
int read;
while ((read = in.read(b)) != -1) {
out.write(b, 0, read);
}
}

Creating random numbers in j2me within specific space

import java.util.Random;
/**
 * Random Number Generator within specific space
 * @param min is the minimum number to be produced
 * @param max is the maximum number to be produced
 * @return the random number
 * @author ventrix
 */
public final class RandomCreator{
    public static int getRandomInt(int min,int max)
    {
        try {
            //Give the currentTimeMillis some time for the seed
            Thread.sleep(2);
        } catch (InterruptedException ex) {
            ex.printStackTrace();
        }
        Random randomizer = new Random(System.currentTimeMillis());
        return randomizer.nextInt(max-min+1)+min;
    }
}

Use it as: System.out.println(RandomCreator.getRandomInt(5,10));

Ok, I have found the javadoc on the internet, but I want to have it at my own server.

So, here it is: JSR180 SIP API

A very simple way to see how much time needed to run your application.

//variables
private long start;
private long end;

//Put this before the main code
start = System.currentTimeMillis();

//Main code here

//Put this at the end of the code
end = System.currentTimeMillis();

System.out.println("Completed in +"+(end-start)+"ms"); 

Updated version 2: Added the includeStartString boolean variable.

public static String returnSubsting(String text, String startString, String endString, Boolean includeStartString) {
        int start = 0;
        int end = 0;
        start = text.indexOf(startString);
        if (start >= 0) {
            if (!includeStartString)
            {
                start+=startString.length();
            }
            end = text.indexOf(endString, start);
            if (end >= 0) {
                return text.substring(start, end);
            } else {
                return null;
            }
        } else {
            return null;
        }
    }

It’s a kind of self documented, so I will only give an example:

String temp=”123ventrix321″;
System.out.println(returnSubsting(temp,”ven”,”321″,true));
will print “ventrix”

System.out.println(returnSubsting(temp,”ven”,”321″,false));
will print “trix”

This is a method I find very useful. It’s usage is pretty obvious… It takes a array of Strings and a seperator and returns a string with the string items separated.

private static String arrayToString(String[] items, String seperator) {
        if ((items == null) || (items.length == 0)) {
            return "";
        } else {
            StringBuffer buffer = new StringBuffer(items[0]);
            for (int i = 1; i < items.length; i++) {
                buffer.append(seperator);
                buffer.append(items[i]);
            }
            return buffer.toString();
        }
    }

Example:

String[] browsers = {"firefox", "internet explorer", "konqueror", "safari"};
String output = Class.arrayToString(browsers,", ");
System.out.println(output);

Prints: firefox, internet explorer, konqueror, safari