Java read multiple files

In this section you will learn how to read the data of multiple files. Here we have created four files that includes information of students of a class. Each file contains a student's name, email, school and hobby. We have to find the students according to particular school from all the files and write all the information of the students belongs to same school into a single file.

Here is the code:

import java.io.*;
import java.util.*;

public class Files {
	public static void main(String[] args) throws Exception {
		Scanner input = new Scanner(System.in);
		System.out.println("Enter school Name");
		String sch = input.nextLine();
		String fname[] = { "s1.txt", "s2.txt", "s3.txt", "s4.txt" };
		File file = new File("data.txt");
		FileWriter fstream = new FileWriter(file, true);
		BufferedWriter out = new BufferedWriter(fstream);

		for (int i = 0; i < fname.length; i++) {
			File f = new File(fname[i]);
			try {
				BufferedReader freader = new BufferedReader(new FileReader(f));
				String s;
				while ((s = freader.readLine()) != null) {
					String[] st = s.split(" ");
					String name = st[0];
					String email = st[1];
					String school = st[2];
					String hobby = st[3];
					if (school.equals(sch)) {
						System.out.println(name + " " + email + " " + hobby);
						out.write(name + " " + email + " " + school + " "
								+ hobby);
						out.newLine();
					}
				}
				freader.close();
			} catch (Exception e) {
			}
		}
		out.close();

	}
}

Related Tags for Java read multiple files: