Java: Store text file content line by line into an array

Last update on April 28 2025 07:37:13 (UTC/GMT +8 hours)

Write a Java program to store text file content line by line in an array.

Sample Solution:

Java Code:

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Arrays;

public class Exercise14 {
 
    public static void main(String a[]){
        StringBuilder sb = new StringBuilder();
        String strLine = "";
        List<String> list = new ArrayList<String>();
        try {
             BufferedReader br = new BufferedReader(new FileReader("/home/students/test.txt"));
              while (strLine != null)
               {
                strLine = br.readLine();
                sb.append(strLine);
                sb.append(System.lineSeparator());
                strLine = br.readLine();
                if (strLine==null)
                   break;
                list.add(strLine);
            }
         System.out.println(Arrays.toString(list.toArray()));
             br.close();
        } catch (FileNotFoundException e) {
            System.err.println("File not found");
        } catch (IOException e) {
            System.err.println("Unable to read the file.");
        }
     }
}

Sample Output:

[Append this text.Append this text.Append this text., Append this text., Append this text.]    

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to read a file and store each line as an element in a String array.
• Write a Java program to load file content into an array and then sort the lines alphabetically.
• Write a Java program to read a text file into an array and print only the lines that contain a specified keyword.
• Write a Java program to convert file lines into an array and then reverse the order of the lines.

Java Code Editor:

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