Code snippets and tips

The canRead method of file class can be used for checking whether the application has a read permission on a file.

package io;

import java.io.File;

public class FileExample {
	public static void main(String[] args){
		File file = new File("d:\\temp\\test.txt");

		boolean value = file.canRead();
		System.out.println(value);
	}
}

Converts a file object to a URI object.

The toURI method of file class can be used for converting a file object to a URI object.

package io;

import java.io.File;
import java.net.URI;

public class FileExample {
	public static void main(String[] args){
		File file = new File("text.txt");

		URI uri = file.toURI();
		System.out.println(uri);
	}
}

Converts a file object to a URL object.

In order to convert a file object to a URL object, we first need to convert the file object to a URI object. Then by calling the toURL method of URI class we can get a URL representation of file object.

package io;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;

public class FileExample {
	public static void main(String[] args) throws MalformedURLException {
		File file = new File("text.txt");

		URI uri = file.toURI();
		URL url = uri.toURL();
		System.out.println(url);
	}
}

Finds the absolute path of a file or directory as a file object.

The getAbsoluteFile method of file class returns the current file object’s absolute path as a file object.

package io;

import java.io.File;

public class FileExample {
	public static void main(String[] args) {
		File file = new File("text.txt");

		File path = file.getAbsoluteFile();
		System.out.println(path);
	}
}

Finds the absolute path of a file or directory

The getAbsolutePath method of file class is used for finding the absolute path of a directory and directory.

package io;

import java.io.File;

public class FileExample {
	public static void main(String[] args) {
		File file = new File("text.txt");

		String path = file.getAbsolutePath();
		System.out.println(path);
	}
}

Checks whether the file path is absolute path or not.

The isAbsolute method of file class is used for finding whether the given file path is absolute or not.

package io;

import java.io.File;

public class FileExample {
	public static void main(String[] args) {
		File file = new File("d:\\temp\\text.txt");

		boolean isAbsolute = file.isAbsolute();
		System.out.println(isAbsolute);
	}
}

Finds the pathname from a file object

The getPath method of file class returns the path in string format.

package io;

import java.io.File;

public class FileExample {
	public static void main(String[] args) {
		File file = new File("d:\\temp\\text.txt");

		String path = file.getPath();
		System.out.println(path);
	}
}

Find the parent directory of the current directory or file.

The getParent method of file class returns the parent directory of the current file object.

package io;

import java.io.File;

public class FileExample {
	public static void main(String[] args) {
		File file = new File("d:\\temp\\text.txt");

		String parent = file.getParent();
		System.out.println(parent);
	}
}

Find the filename or directory name from a file object.

The getName method of file class returns the name of the file or directory of the current file object.

import java.io.File;

public class FileExample {
public static void main(String[] args) {
File file = new File("d:\\temp");

System.out.println(file.getName());
}
}