How can we open and read a text file in Java Explain your answer with example?

How can we open and read a text file in Java Explain your answer with example?

Example

1. import java.util.*;
2. import java.nio.charset.StandardCharsets;
3. import java.nio.file.*;
4. import java.io.*;
5. public class OpenFileExample6.
6. {
7. public static List readFileInList(String fileName)
8. {

How do I open a file with Java?

To run the file (Java Runtime Environment)

1. Right-click the file and select Open With.
2. In the Open With window, click the Browse button to open the File Explorer window.
3. You need to find the Java executable file (java.exe file) on your computer hard drive.

How do I read an existing text file in Java?

There are several ways to read a plain text file in Java e.g. you can use FileReader, BufferedReader, or Scanner to read a text file. Every utility provides something special e.g. BufferedReader provides buffering of data for fast reading, and Scanner provides parsing ability.

How do I open Notepad in Java?

Java program to open Notepad

1. import java. util.*;
2. import java. io.*;
3. class Notepad {
4. public static void main(String[] args) {
5. Runtime rs = Runtime. getRuntime();
6. try {
7. rs. exec(“notepad”);
8. }

How do I open a Java file in Windows 10?

Windows 10

1. Right-click on the Start button and select the Control Panel option.
2. In the Windows Control Panel, click on Programs.
3. Click on the Java icon to open the Java Control Panel.

How do I open a Java file in my browser?

Firefox

1. Open the Firefox browser or restart it, if it is already running.
2. From the Firefox menu, select Tools then click the Add-ons option.
3. In the Add-ons Manager window, select Plugins.
4. Click Java (TM) Platform plugin (Windows) or Java Applet Plug-in (Mac OS X) to select it.

How do you read a specific line in a text file in Java?

Small files

1. import java. io. IOException;
2. import java. nio. file. Files;
3. import java. nio. file. Path;
4. import java. nio. file. Paths;
5. class FileRead {
6. public static void main( String args[] ) {
7. int n = 1; // The line number.

How do I run a Java program in Windows 10 notepad?

How to Run Java Program in CMD Using Notepad

1. Open the notepad and write a Java program into it.
2. Save the Java program by using the class name followed by . java extension.
3. Open the CMD, type the commands and run the Java program.

What are the two parts in executing a Java program?

Ans: Two parts in executing a Java program are: Java Compiler and Java Interpreter. The Java Compiler is used for compilation and the Java Interpreter is used for execution of the application.

How do I open a file type in Windows 10?

Windows 10:

1. Open File Explorer; if you do not have an icon for this in the task bar; click Start, click Windows System, and then File Explorer.
2. Click the View tab in File Explorer.
3. Click the box next to File name extensions to see file extensions.
4. Click the box next to Hidden items to see hidden files.

How do you open a file in Java?

To open an existing Java file: Switch to the Java perspective. In the Package Explorer view, double-click the Java file that you want to open. The file is opened in the editor view. Work with the contents of the file to make your changes.

How to read and write in text file in Java?

Reading Ordinary Text Files in Java. If you want to read an ordinary text file in your system’s default encoding (usually the case most of the time for most people), use FileReader and wrap it in a BufferedReader. In the following program, we read a file called “temp.txt” and output the file line by line on the console.

How do you read files in Java?

Using BufferedReader: This method reads text from a character-input stream.

Using FileReader class: Convenience class for reading character files.

Using Scanner class: A simple text scanner which can parse primitive types and strings using regular expressions.

How do I read a line from a file in Java?

There are the couple of ways to read file line by line in Java 8 e.g. by using Files.readAllLines() method, which returns a List of String, which is nothing but lines from File. There are two overloaded versions of this method, one which accepts a character encoding and other which uses UTF-8 charset.