Java uses IO stream to split and merge large files

Java uses IO stream to split and merge large files

File segmentation should be a practical function. For example, you have a 3G file to copy from one computer to another, but your storage device (such as SD card) has only 1g. At this time, you can cut the file into three 1g files, copy them separately, and finally merge the three files to solve the problem; For another example, you have a file of hundreds of megabytes to upload to FTP, but the FTP limits your single file to no more than 10m. At this time, you can also solve the problem by file segmentation. Since it is split, we need to merge when we use it again. Today, we can split and merge files through Java code.

Now let's demonstrate by demonstrating a file on my local machine. The file directory is e: \ eclipse-jee-juno-win32 Zip (let's have fun with eclipse we hate today):

The following figure shows the situation before segmentation:

After segmentation:

How to split java files:

How to merge files in Java:

I think it's very complicated before writing. After writing, I think it's just like that. You can also practice your hand.

Thank you for reading, hope to help you, thank you for your support to this site!