How can I read/convert an Input Stream into a String in Java?

Question

Aryan Kumar · Answer

In Java, you can read an InputStream and convert it into a 
String using various methods. Here are a couple of common approaches:
Using Scanner:
This method uses a Scanner to read the InputStream and set the delimiter to match the entire input. It then checks if there is a next token and returns it as a
String.
Using BufferedReader:
javaCopy code
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class InputStreamToString {
    public static String convertToString(InputStream inputStream) throws IOException {
        StringBuilder result = new StringBuilder();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
            String line;
            while ((line = reader.readLine()) != null) {
                result.append(line).append("
");
            }
        }
        return result.toString();
    }
    public static void main(String[] args) {
        // Example of usage
        InputStream inputStream = // your input stream here
        try {
            String result = convertToString(inputStream);
            System.out.println(result);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
This method uses a BufferedReader to read the InputStream line by line and append each line to a
StringBuilder. The resulting StringBuilder is then converted to a
String.
Choose the method that fits your needs and the specific characteristics of your input stream. Keep in mind that the second approach using
BufferedReader is more suitable for large streams or when processing line-based data.

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How can I read/convert an Input Stream into a String in Java?

Utpal Vishwas

Can you answer this question?

1 Answers

Using Scanner:

Using BufferedReader:

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