How to Rename a file and Copy it into another location in Java

Rename:

First we rename a file.

// file location
File oldFile = new File("C:\\Users\\radiate\\Desktop\\OldFolder\\villain.jpg"); // source file location

String oldFileName = oldFile.getName();

// rename the villain.jpg file to darklord.jpg
String rename = oldFileName.replace(oldFileName, "darklord.jpg");

System.out.println("old file name: " + oldFileName +"\n"+"rename file name : " +rename);

Output:

old file name: villain.jpg

rename file name : darklord.jpg

Copy:

Now we move the rename file into another location.

File newFileLocation = new File("C:\\Users\\radiate\\Desktop\\NewFolder"); // destination location

try {

FileInputStream inputOldFile = new FileInputStream(oldFile);
FileOutputStream outputNewFile = new FileOutputStream(newFileLocation.getAbsolutePath()+"\\"+rename);

// this is for copy the file into new location with new name
byte[] buffer = new byte[1024];
int filelength;
while((filelength= inputOldFile.read(buffer))>0){
outputNewFile.write(buffer, 0, filelength);
}
inputOldFile.close();
outputNewFile.close(); // end copy
System.out.println("Successful Rename and move");
} catch (IOException e) {
e.printStackTrace();
}

Output:
old file name: villain.jpg
rename file name : darklord.jpg
Successful Rename and move

Download the source file

Read More