canRead(): Returns true if you are permitted to read the file and false otherwise. : File « File « Java Tutorial

1.	Language
2.	Data Type
3.	Operators
4.	Statement Control
5.	Class Definition
6.	Development
7.	Reflection
8.	Regular Expressions
9.	Collections
10.	Thread
11.	File
12.	Generics
13.	I18N
14.	Swing
15.	Swing Event
16.	2D Graphics
17.	SWT
18.	SWT 2D Graphics
19.	Network
20.	Database
21.	Hibernate
22.	JPA
23.	JSP
24.	JSTL
25.	Servlet
26.	Web Services SOA
27.	EJB3
28.	Spring
29.	PDF
30.	Email
31.	J2ME
32.	J2EE Application
33.	XML
34.	Design Pattern
35.	Log
36.	Security
37.	Apache Common
38.	Ant
39.	JUnit

Java Source Code / Java Documentation

Java Open Source

Jar File Download

Photoshop Tutorials

Flash Tutorials

3ds-Max Tutorials

Illustrator Tutorials

C# / CSharp Tutorial

C# / CSharp Open Source

ASP.NET Tutorial

JavaScript DHTML

JavaScript Tutorial

JavaScript Reference

HTML CSS Reference

Python Tutorial

Python Open Source

SQL Server / T-SQL

SQL Server / T-SQL Tutorial

Oracle PL / SQL

Oracle PL/SQL Tutorial

VB.Net Tutorial

Flash / Flex / ActionScript

VBA / Excel / Access / Word

Microsoft Office PowerPoint 2007 Tutorial

Microsoft Office Excel 2007 Tutorial

Microsoft Office Word 2007 Tutorial

Java Tutorial » File » File

11. 2. 12. canRead(): Returns true if you are permitted to read the file and false otherwise.

This method can throw a SecurityException if the file is not permitted.


import java.io.File;



public class MainClass {

  public static void main(String[] a) {

    File myFile = new File("C:" + File.separator + "jdk1.5.0" + File.separator, "File.java");

    System.out.println(myFile.canRead());

  }

}

false

11. 2. File
	11. 2. 1.	The File Class
	11. 2. 2.	Testing and Checking File Objects: file name and path
	11. 2. 3.	Providing a URI for a remote file
	11. 2. 4.	isAbsolute(): Returns true if the File object refers to an absolute pathname, and false otherwise.
	11. 2. 5.	getParent(): Returns the name of the parent directory of the file or directory represented
	11. 2. 6.	getParentFile(): Returns the parent directory as a File object, or null if this File object does not have a parent.
	11. 2. 7.	toString(): Returns a String representation of the current File object
	11. 2. 8.	exists(): Returns true if it exists and false otherwise
	11. 2. 9.	isDirectory(): Returns true if it is an existing directory and false otherwise
	11. 2. 10.	isFile(): Returns true if it is an existing file and false otherwise
	11. 2. 11.	isHidden(): Returns true if it is hidden and false otherwise
	11. 2. 12.	canRead(): Returns true if you are permitted to read the file and false otherwise.
	11. 2. 13.	canWrite(): Returns true if you are permitted to write to the file and false otherwise.
	11. 2. 14.	getAbsolutePath(): Returns the absolute path for the directory or file referenced by the current File object
	11. 2. 15.	getAbsoluteFile(): Returns a File object containing the absolute path for the directory or file referenced by the current File object.
	11. 2. 16.	list(): Returns a string array containing the children files and directories
	11. 2. 17.	listFiles(): Returns a File array containing the children files and directories
	11. 2. 18.	length(): Returns the length of current file in long
	11. 2. 19.	Create a human-readable file size
	11. 2. 20.	lastModified(): Returns last modified time in milliseconds since midnight on 1st January 1970 GMT
	11. 2. 21.	renameTo(File path): Rename a file or directory
	11. 2. 22.	setReadOnly(): Sets the file as read-only and returns true if the operation is successful
	11. 2. 23.	Filtering a File List
	11. 2. 24.	mkdir(): Creates a directory
	11. 2. 25.	mkdirs(): Creates a directory including any parent directories
	11. 2. 26.	createNewFile(): Creates a new empty file
	11. 2. 27.	createTempFile(String prefix, String suffix, File directory): a static method that creates a temporary file
	11. 2. 28.	delete(): delete the file or directory
	11. 2. 29.	Display File class constants and test some methods
	11. 2. 30.	deleteOnExit(): delete file or directory when the program ends
	11. 2. 31.	File Class Enhancements
	11. 2. 32.	Creates a file and sets it to read-only.
	11. 2. 33.	Create a file and change its attribute to readonly
	11. 2. 34.	List all roots
	11. 2. 35.	Get the free space
	11. 2. 36.	Get the usable space
	11. 2. 37.	Get the total space
	11. 2. 38.	Set file attributes.
	11. 2. 39.	Change a file attribute to writable
	11. 2. 40.	Change a file attribute to read only
	11. 2. 41.	Getting a Proper URL from a File Object
	11. 2. 42.	Get icon for file type
	11. 2. 43.	Get all xml files by file extension
	11. 2. 44.	Get file extension name
	11. 2. 45.	File.getCanonicalFile() converts a filename path to a unique canonical form suitable for comparisons.

www.java2java.com | Contact Us

Copyright 2009 - 12 Demo Source and Support. All rights reserved.

All other trademarks are property of their respective owners.