import java.io.File; import java.util.Arrays; public class ViewallFile {

//utility method to print a string
static void print(String value) {
    System.out.println(value);
}


/**
 * Method to sort all files and folders in a directory
 *
 * @param dirName : directory name
 * @return : No return value. Sort and print out the result
 */
private static void sortAll(String dirName) {
    File directory = new File(dirName);

    File[] filesArray = directory.listFiles();

    //sort all files
    Arrays.sort(filesArray);

    //print the sorted values
    for (File file : filesArray) {
        if (file.isFile()) {
            print("File : " + file.getName());
        } else if (file.isDirectory()) {
            print("Directory : " + file.getName());
        } else {
            print("Unknown : " + file.getName());
        }
    }
}

public static void main(String[] args) {
    sortAll("C://Programs/");
}

}

import java.io.File; import java.io.IOException;

public class CreatenewFile { public static void main(String[] args) { try { File file = new File("E:\AFSHA.txt");

     if(file.createNewFile())System.out.println("Success!");
     else System.out.println ("Error, file already exists.");
  }
  catch(IOException ioe) {
     ioe.printStackTrace();
  }

} }

package P1; import java.util.logging.Logger; import java.io.FileWriter; import java.io.IOException;

public class InsertmyRecord {

public static void main(String[] args) {
	// TODO Auto-generated method stub
	String data = "MEHAR AFSHA, BANGALORE, INDIA";
		try {
			FileWriter output = new FileWriter("E:\\AFSHA.txt");
			output.write(data);
			System.out.println("data written successfuly");
			output.close();
		}
	catch (IOException e)
	{
		System.out.println("file write error");
	}

}

}

package P1;

import java.io.File;

public class SearchFile {

public static void main(String[] argv) throws Exception
{
    // Create an object of the File class
    // Replace the file path with path of the directory
    File directory = new File("E:\\");

    // store all names with same name
    // with/without extension
    String[] flist = directory.list();
    int flag = 0;
    if (flist == null) {
        System.out.println("Empty directory.");
    }
    else {

        // Linear search in the array
        for (int i = 0; i < flist.length; i++) {
            String filename = flist[i];
            if (filename.equalsIgnoreCase("AFSHA.txt")) {
                System.out.println(filename + " found");
                flag = 1;
            }
        }
    }

    if (flag == 0) {
        System.out.println("File Not Found");
    }
}

}

import java.io.File;

public class DeleteFile { public static void main(String[] args) { try { File file = new File("E:\data.txt"); if(file.delete()) { System.out.println(file.getName() + " is deleted!"); } else { System.out.println("Delete operation is failed."); } } catch(Exception e) { e.printStackTrace(); } } }