Write a Java Program to Read the Content of a File Line by Line

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Write a Java Program to Read the Content of a File Line by Line

PROGRAM: Java Program to Read the Content of a File Line by Line

/*Java Program to Read the Content of a File Line by Line*/

1: Java Program to Read File Using BufferedInputStream

import java.io.BufferedInputStream;
import java.io.FileInputStream;

class Main {
public static void main(String[] args) {
try {

// Creates a FileInputStream
FileInputStream file = new FileInputStream(“input.txt”);

// Creates a BufferedInputStream
BufferedInputStream input = new BufferedInputStream(file);

// Reads first byte from file
int i = input .read();

while (i != -1) {
System.out.print((char) i);

// Reads next byte from the file
i = input.read();
}
input.close();
}

catch (Exception e) {
e.getStackTrace();
}
}
}

2: Java Program to Read File Using BufferedReader

import java.io.FileReader;
import java.io.BufferedReader;

class Main {
public static void main(String[] args) {

// Creates an array of character
char[] array = new char[100];

try {
// Creates a FileReader
FileReader file = new FileReader(“input.txt”);

// Creates a BufferedReader
BufferedReader input = new BufferedReader(file);

// Reads characters
input.read(array);
System.out.println(“Data in the file: “);
System.out.println(array);

// Closes the reader
input.close();
}

catch(Exception e) {
e.getStackTrace();
}
}
}

3: Java Program to Read File Using Scanner

import java.io.File;
import java.util.Scanner;

class Main {
public static void main(String[] args) {

try {
// create a new file object
File file = new File(“input.txt”);

// create an object of Scanner
// associated with the file
Scanner sc = new Scanner(file);

// read each line from file and print it
System.out.println(“Reading File Using Scanner:”);
while(sc.hasNextLine()) {
System.out.println(sc.nextLine());
}

// close scanner
sc.close();
} catch (Exception e) {
e.getStackTrace();
}
}
}

1: Java Program to Read File Using BufferedInputStream

2: Java Program to Read File Using BufferedReader

3: Java Program to Read File Using Scanner

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