Use following codes to read the file. public static void main(String[] args) { try { System.out.print("Enter the file name with extension : "); Scanner input = new Scanner(System.in); File file = new File(input.nextLine()); input = new Scanner(file); while (input.hasNextLine()) { String line = input.nextLine(); System.out.println(line);

Read a File. In the previous chapter, you learned how to create and write to a file. In the following example, we use the Scanner class to read the contents of the text file we created in the previous chapter:

Apr 10, 2016 · Scanner scan = new Scanner(System.in); FileWriter fw = new FileWriter(file); BufferedWriter bw = new BufferedWriter(fw); PrintWriter outFile = new PrintWriter(bw); You have to read from the input and write it into a file. First point you need a loop for reading the input and condition to terminate.

Apr 29, 2016 · Scanner is for reading purposes. You can use Writer class to write data to a file. For Example: Writer wr = new FileWriter("file name.txt"); wr.write(String.valueOf(2)) // write int wr.write("Name"); // write string wr.flush(); wr.close(); Hope this helps

Jun 16, 2022 · To read and print an integer value in Java, we can use the Scanner class to take input from the user. This class is present in the java.util package. Example input/output: Input: 357Output: 357 Input: 10Outpu

Jan 5, 2017 · Read & write contents to / from file in java. We will use scanner class to read file contents from file. We have shown class hierarchy of Scanner class.

Jan 4, 2025 · 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.

Jan 5, 2024 · In this quick tutorial, we’ll illustrate how to use the Java Scanner class – to read input and find and skip patterns with different delimiters. 2. Scan a File. First – let’s see how to read a file using Scanner. In the following example – we read a file containing “ Hello world ” into tokens: Scanner scanner = new Scanner (new File ("test.txt"));

Jan 8, 2024 · In this tutorial, we’ll explore different ways to read from a File in Java. First, we’ll learn how to load a file from the classpath, a URL, or from a JAR file using standard Java classes. Second, we’ll see how to read the content with BufferedReader, Scanner, StreamTokenizer, DataInputStream, SequenceInputStream, and FileChannel. We will ...

Aug 1, 2019 · Learn how to read the contents of a file in Java using the Scanner class with this detailed tutorial.