File renameTo() method in Java with examples
The renameTo() method is a part of File class. The renameTo() function is used to rename the abstract path name of a File to a given path name. The function returns true if the file is renamed else returns false
public boolean renameTo(File destination)
Parameters: The function requires File object destination as parameter, the new abstract path name of the present file.
Return Value: The function returns boolean data type. The function returns true the file is renamed else returns false
Exception: This method throws following exceptions:
- Security Exception if the method does not allow write operation of the abstract pathnames.
- NullPointerException if the destination filename is null.
Below programs will illustrate the use of renameTo() function:
Example 1: Try to rename the file program.txt to program1.txt
File is renamed
Example 2: Try to rename “program1.txt” to “prog.txt”, “prog.txt” is a existing file in the f: drive .
File cannot be renamed
The programs might not run in an online IDE. please use an offline IDE and set the path of the file
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