This blog post will discuss IO operations in Java, and how to use the java.io package to perform various input and output tasks. We will look at examples of writing to a file, reading from a file, and reading user input using classes from the java.io package.

IO (Input-Output) is a crucial part of programming, and in Java, it is possible to perform Input-Output operations using the java.io package. This package provides a wide range of classes and methods to perform IO operations.

Here are some examples of IO operations in Java:

1. Writing to a file:

To write to a file, we can use the FileWriter class from the java.io package. Here is an example:

This code creates a new file ‘test.txt’ and writes the text “Hello, World.” to it.

2. Reading from a file:

To read from a file, we can use the FileReader class from the java.io package. Here is an example:

This code reads the contents of the ‘test.txt’ file that we created in the previous example and prints it on the console.

3. Reading user input:

To read user input, we can use the Scanner class from the java.util package. Here is an example:

This code prompts the user to enter their name and reads their input. It then prints the message “Hello, ” followed by the name that the user entered.

These are just a few examples of IO operations in Java. There are many other classes and methods available in the java.io package that make it possible to perform various input and output tasks.

The java.io package provides a wide range of classes and methods to perform IO operations in Java, making it possible to read from files, write to files, and take user input. These examples demonstrate how easy it is to use the java.io package for various Input-Output tasks in Java programming.