JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to get file list from a folder filtered by extensions?


Description:

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


Code:
package com.java2novice.files;

import java.io.File;
import java.io.FilenameFilter;

public class MyFilteredFileList {
	
	public static void main(String a[]){
		File file = new File("C:/MyFolder/");
		File[] files = file.listFiles(new FilenameFilter() {
			
			@Override
			public boolean accept(File dir, String name) {
				if(name.toLowerCase().endsWith(".csv")){
					return true;
				} else {
					return false;
				}
			}
		});
		for(File f:files){
			System.out.println(f.getName());
		}
	}
}
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Java File IO Operations Sample Code Examples

  1. All file operations.
  2. Show list of all file names from a folder.
  3. How to get list of all files from a folder?
  4. Filter the files by file extensions and show the file names.
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  9. How to get file list from a folder filtered by extensions?
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  18. How to set file permissions in java?
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  22. How to delete temporary file in java?
  23. How to write string content to a file in java?
  24. How to write byte content to a file in java?
Knowledge Centre
What is fail-fast in java?
A fail-fast system is nothing but immediately report any failure that is likely to lead to failure. When a problem occurs, a fail-fast system fails immediately. In Java, we can find this behavior with iterators. Incase, you have called iterator on a collection object, and another thread tries to modify the collection object, then concurrent modification exception will be thrown. This is called fail-fast.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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