Reading file data into an array in JAVA JAVA by Ravinder Nath Rajotiya - April 18, 20210 Reading Numeric data from file into an array In this post we look out how we can integer read data from a file into an array. For this we need the following steps. Step-1: Create an array to store data read from file Step-2: create file object of class file and connect to file Step-3: Check if the file exist Step-4: Create object of Scanner class and make connection to input file using file object Step-5: Check if the current line has data in it using hasNext() Step-6: read from the line and set the pointer to begining of next line using object.nextLine() Step-7: close file when done Step-8: Display / process data read from the file Example reading from a file into an array package com.example; import java.io.IOException; public class arrays { public static
File Handling in JAVA processing file data JAVA by Ravinder Nath Rajotiya - April 16, 2021April 16, 20210 Reading integer from file This program explains how we can read numerical data from a file and process it. Remember we need following steps to read from a file: step-1: create File object and connect the file containing data by passing fileName in object as: File file = new File("outputFile.txt"); Step-2: Test whether the file exists, if it exists step-3: Create object to Scanner class and connect it to the file containing data pointed by File object "file" as shown below: Scanner inputFile = new Scanner(file); Step-4: Check if the line being pointed by nextLine() has the data, this is done asL: while(inputFile.hasNext()) Step-5 read from thefile sum += inputFile.nextInt(); Now see the complete program, of reading integer values from the file and count the number values in file and