FileAlreadyExistsException

AI-generated Key Takeaways

FileAlreadyExistsException is a checked exception indicating a file or directory creation failure due to a pre-existing file with the same name.
It inherits methods from FileSystemException and Throwable for accessing details like the file path, error reason, and stack trace.
Two constructors allow creating instances with varying levels of information: file path only, or with an additional file and reason.
It's crucial to handle this exception when creating files or directories, ensuring appropriate actions like overwriting or choosing a different name.

public class FileAlreadyExistsException extends FileSystemException

Checked exception thrown when an attempt is made to create a file or directory and a file of that name already exists.

	FileAlreadyExistsException(String file) Constructs an instance of this class.
	FileAlreadyExistsException(String file, String other, String reason) Constructs an instance of this class.

From class java.nio.file.FileSystemException

String	getFile() Returns the file used to create this exception.
String	getMessage() Returns the detail message string.
String	getOtherFile() Returns the other file used to create this exception.
String	getReason() Returns the string explaining why the file system operation failed.

From class java.lang.Throwable

synchronized final void	addSuppressed(Throwable exception) Appends the specified exception to the exceptions that were suppressed in order to deliver this exception.
synchronized Throwable	fillInStackTrace() Fills in the execution stack trace.
synchronized Throwable	getCause() Returns the cause of this throwable or `null` if the cause is nonexistent or unknown.
String	getLocalizedMessage() Creates a localized description of this throwable.
String	getMessage() Returns the detail message string of this throwable.
StackTraceElement[]	getStackTrace() Provides programmatic access to the stack trace information printed by `printStackTrace()`.
synchronized final Throwable[]	getSuppressed() Returns an array containing all of the exceptions that were suppressed, typically by the `try`-with-resources statement, in order to deliver this exception.
synchronized Throwable	initCause(Throwable cause) Initializes the cause of this throwable to the specified value.
void	printStackTrace() Prints this throwable and its backtrace to the standard error stream.
void	printStackTrace(PrintWriter s) Prints this throwable and its backtrace to the specified print writer.
void	printStackTrace(PrintStream s) Prints this throwable and its backtrace to the specified print stream.
void	setStackTrace(StackTraceElement[] stackTrace) Sets the stack trace elements that will be returned by `getStackTrace()` and printed by `printStackTrace()` and related methods.
String	toString() Returns a short description of this throwable.

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.

Constructs an instance of this class.

file	a string identifying the file or `null` if not known

Constructs an instance of this class.

file	a string identifying the file or `null` if not known
other	a string identifying the other file or `null` if not known
reason	a reason message with additional information or `null`