JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to get list of all file names from a folder in java?


Description:

Below example shows how to get list of all file names from the given folder. First create File object by passing folder path. Call list() method on file object to get list of file names in the folder.


Code:
package com.java2novice.files;

import java.io.File;

public class FileListFromFolder {
	
	public static void main(String a[]){
		File file = new File("C:/MyFolder/");
		String[] fileList = file.list();
		for(String name:fileList){
			System.out.println(name);
		}
	}
}
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Knowledge Centre
When to use LinkedList or ArrayList?
Accessing elements are faster with ArrayList, because it is index based. But accessing is difficult with LinkedList. It is slow access. This is to access any element, you need to navigate through the elements one by one. But insertion and deletion is much faster with LinkedList, because if you know the node, just change the pointers before or after nodes. Insertion and deletion is slow with ArrayList, this is because, during these operations ArrayList need to adjust the indexes according to deletion or insetion if you are performing on middle indexes. Means, an ArrayList having 10 elements, if you are inserting at index 5, then you need to shift the indexes above 5 to one more.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to java2novice@gmail.com or you can comment on the page.

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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