Top-rated Java recipes

RomanNumeral to Integers (viceversa) (Java)

2010-07-18T11:20:19-07:00

Java recipe 577313 by st0le (conversions, java, numbers, roman).

Converts Roman Symbols to Integers and back.

Number To Words Converter (100 => One Hundred) (Java)

2010-07-18T11:17:52-07:00

Java recipe 577312 by st0le (conversions, integer, java, number).

Converts Integers to Words.

Ali (Java)

2013-02-17T12:54:44-08:00

Java recipe 578461 by Alireza Hosseini .

{{{ http://code.activestate.com/recipes/578439/ (r1)

Just a try using the thread modules.

import urllib as ul import bs4 as bs import urlparse as up import re as re import os.path as op import Queue as que import time import threading

pat = re.compile('.[\d]{4,7}.')

count=0

class dldfile(threading.Thread): def __init__(self,qu1): threading.Thread.__init__(self) self.qu1=qu1 self.ad='download/1/'

def run(self):
    try:
        url,filename=self.qu1.get()
        url =url+self.ad             #comment this line in case need to download whole web page instead of recipe ONLY...
        ul.urlretrieve(url,filename)
        global count
    except:
        print " RE-TRYING ",
        count= count - 1
        self.qu1.put((url,filename))
        self.run()
    finally:
        count= count +1
        print str(count)+"("+str( threading.activeCount())  +")",filename
        self.qu1.task_done()

class dload(threading.Thread ): def __init__(self,qu,url = "http://code.activestate.com/recipes/langs/python/?page=" ): threading.Thread.__init__(self) self.url= url self.q =que.Queue() self.qu=qu

def run(self):
    ind=self.qu.get()
    url=self.url+str(ind)
    soup =bs.BeautifulSoup(''.join( ul.urlopen(url).readlines() ))
    bu = up.urlsplit(self.url)
    print 'started with the ' ,str(url).split('/')[-1],
    for i in  soup.find_all(attrs = { "class" : "recipe-title"}):
        sp = up.urlsplit(i.a.get('href'))
        path = sp.path
        print path
        if re.search(pat, path):
            path = bu.scheme+'://'+bu.netloc+path
            filename = str(path).split('/')[-2]
            filename = op.join(op.abspath(op.curdir),filename+'.py') # recipe will be stored in given location

filename = op.join(op.abspath(op.curdir),filename+'.html')

uncomment the above line if downloading the web page for teh recipe

            print path
            self.q.put((path,filename))
    self.fetch_data()
    time.sleep(1)
    self.qu.task_done()
    self.q.join()
    print 'done with the ' ,str(url).split('/')[-1],

def fetch_data(self):
    Que1 = que.Queue()
    minitask =10
    while not self.q.empty():
        for i in range(minitask):
            x = dldfile(Que1)
            x.setDaemon(True)
            x.start()
        for j in range(minitask):
            Que1.put(self.q.get())
        Que1.join()
        del x

if __name__ =='__main__': task=5 Que = que.Queue() for k in range(1,190,task): # no. of pages included under the python tag. 188 is current count and 3700+ python recipes print "\n PAGE # : {0} \t \nDeploying Fresh threads\n".format(k) for i in range(task): t = dload(Que) t.start() for j in range(task): Que.put(k+j) Que.join() Que.queue.clear() del t print "DONE\n" time.sleep(2) del Que print "Our buisness finished"

end of http://code.activestate.com/recipes/578439/ }}}

jeesoo's coding (Java)

2011-06-21T09:09:43-07:00

Java recipe 577765 by Jeesoo .

jeesoo's coding

Langton's Ant Automaton (Java)

2011-02-17T21:53:36-08:00

Java recipe 577576 by FB36 (applet, graphics, math).

(Generalized) Langton's Ant Automaton.

Langton's ant is a 2D Turing machine. In this version, at each new x,y location the ant reads the byte value and replaces it w/ another, and chooses a new direction (one of 8 possible directions) to move.

Byte replacement and direction values are read from random arrays.

C# String.Replace with a char array (Java)

2010-12-24T09:58:35-08:00

Java recipe 577516 by John Hurliman (csharp, replace, string).

Takes a string and replaces all characters matching a given array with a given string

C# Surface Normal (Java)

2010-08-06T21:00:07-07:00

Java recipe 577348 by John Hurliman (csharp, graphics, normal).

Calculates a surface normal given three position vectors in clockwise order. Written in C#

C# Image Resize (Java)

2010-08-06T20:56:16-07:00

Java recipe 577347 by John Hurliman (csharp, image, resize).

Resize a GDI+ image using C#

Next Lexographic Word (Java)

2010-07-18T11:33:38-07:00

Java recipe 577315 by st0le (bruteforce, java, password).

Generates next lexographically occuring word, say "aaa" -> "aab" -> "aac"

Can be used for password cracking....

Sudoku Solver (Bruteforce) (Java)

2010-07-18T11:31:10-07:00

Java recipe 577314 by st0le (java, sudoku).

A simple Sudoku Solver, use 0 for blank cells.

Snowflake Fractal Applet using Cellular Automaton (Java)

2010-07-17T00:42:13-07:00

Java recipe 577311 by FB36 (applet, fractal, graphics, math).

Snowflake fractal applet using Cellular Automaton (2d CA).

Multi-threaded Mandelbrot Fractal Applet (Java)

2010-03-27T16:09:42-07:00

Java recipe 577158 by FB36 (applet, fractal, graphics, math).

Number of threads can be chosen freely.

Gravity Simulation Fractal Applet (Java)

2010-03-26T17:49:13-07:00

Java recipe 577152 by FB36 (applet, fractal, graphics, math, physics).

It produces a fractal image from an N particle gravity simulation. Warning: The calculation takes about a minute!

Gravity Simulation Applet (Java)

2010-03-26T17:50:43-07:00

Java recipe 577151 by FB36 (applet, graphics, math, physics).

It displays the trajectories of N mass particles moving under the force of gravity in 2D space. The repeating patterns mean particles started orbiting each other.

Color-cycling Plasma Fractal Applet (Java)

2010-03-26T05:06:53-07:00

Java recipe 577148 by FB36 (applet, fractal, graphics, math).

Color-cycling plasma fractal applet.

Morphing Plasma Fractal Applet (Java)

2010-03-26T04:58:36-07:00

Java recipe 577147 by FB36 (applet, fractal, graphics, math).

It displays a continuously changing plasma fractal.

Moving Plasma Fractal Applet (Java)

2010-03-26T01:28:58-07:00

Java recipe 577146 by FB36 (fractal, graphics, math).

Moving Plasma Fractal Applet.

CPU Usage Graph Applet (Java)

2010-03-26T01:12:44-07:00

Java recipe 577145 by FB36 (applet, cpu_usage, graphics).

It calculates CPU speed w/o using any system calls etc. Instead it simply uses a timed counter.

HI-LO game (Java)

2010-02-23T15:56:05-08:00

Java recipe 388133 by Ohm Patel (programs).

This program is a game in which someone will try and guess a number between 1-100 in 4 tries. It will also give out instructions of how to play using methods and will also tell the person if their guess was too low or too high.

Curve fitting to N random points (Java)

2010-03-26T17:21:53-07:00

Java recipe 577150 by FB36 (applet, graphics, math).

It creates a curve that passes through N random points using inverse distance weighted averages.