All Questions
29 questions
6
votes
1
answer
135
views
Creating random music covers using Conways Game of Life algorithm
(A sample cover art follows.)
I'm currently working on replacing all the covers of my music files to have a unified theme, and I've started this project in Java to refresh my knowledge after a gap of ...
- 61
1
vote
1
answer
72
views
Renaming and deleting video file
I am using below code to rename and delete video.
Need review for the following:
Code optimization
Performance
Overall code review
...
0
votes
3
answers
1k
views
Fastest way to create random pixel image
I want to create a very big gigantic PNG image. The image pixel are generated randomly, being
How can I improve the below code to create a fast random pixel image in java?
...
- 49
2
votes
3
answers
116
views
Java file analyzer byte-by-byte
This is part of this topic.
Problem:
I need to read a file with BigIntegers and make some analysis "on-the-fly" with each read number (get prime numbers count, get armstrong numbers count). Right now ...
1
vote
1
answer
1k
views
Writing billions of lines to text file in java [closed]
I'm trying to write billions of strings lines to a file, it works for up to 40 million lines, but it's throwing out "java.nio.BufferOverflowException" error for 400 million lines. I also think my ...
- 49
-3
votes
1
answer
74
views
Code creates huge Text File [closed]
A Java program that writes each digit on a new line, from 1 to max integer. We should end up with 2.4 Billion lines. After looping to near the maximum integer, the text file becomes really huge. Like ...
- 63
2
votes
0
answers
60
views
Sharing File (Content) without saving it before
I have a listview of PrivateFile objects which contain the fileId (int), fileName (String) ...
- 143
2
votes
1
answer
2k
views
Java splitting too large text file enhance performance
I have a too large data.txt file containing data as follows:
...
- 349
11
votes
5
answers
2k
views
Counting relevant entries in a large bioinformatics file
I have a working example of a piece of code which opens up a file, gathers information about the contents, and outputs a map which contains the information.
The file
The file type is an in-house ...
- 382
2
votes
1
answer
11k
views
Compare large text File in java line by line
Dear fellow developers I am doing a java program which compare two text files line by line, first text file has 99,000 lines and the other file has 1,15,000 lines. I want to read the files and compare ...
3
votes
1
answer
19k
views
Split a file into multiple files if it reaches a particular limit?
For each clientId, I have a Collection<Task> object. I am making file for each clientId...
- 571
1
vote
1
answer
450
views
Reading file and print it in hex format really slow
I'm trying to read a file and print its byte in hex form, using the below code. The code those it but i think optimization can be done to make it read and print faster, because if i remove the print ...
- 63
0
votes
1
answer
1k
views
Reading bytes from file to compute its SHA256 hash
I need to get text hash (sha 256), so I need to convert file to its type representation. Is this a fast way to get a byte representation of a file?
...
- 11
4
votes
2
answers
2k
views
Creating multiple files from a list
This piece of code is to get random samples from two String lists, pos and neg. Based on a ...
- 173
2
votes
1
answer
65
views
Reading in millions of lines of AOL query logs for query suggestion/expansion
I am working on a query suggestion program, and to faciliate this, I am reading in millions of AOL queries logs. The logs have this format:
...
- 153