Read from File in Java: Explanation & Practice

Problem summary

Read and print the contents of a text file.

Starter code

import java.io.*;

public class Main {
    public static void main(String[] args) {
        // Read from input.txt (contains "Hello World")
        // Print contents
    }
}

Expected output and test cases

• Read file contents

  Hello World

Hints

1. Use FileReader or BufferedReader
2. Read line by line with readLine()
3. Check for null (end of file)

Related File I/O exercises

• Practice Write to File in Java
• Practice Append to File in Java
• Practice Count Lines in File in Java

Practice all File I/O exercises · Run this idea in the Java compiler