How do I get the content of an InputStream as a String?

We can use the code below to convert the content of an InputStream into a String. At first we use FileInputStream create to a connection to a file that going to be read. IOUtils.toString(InputStream input, String encoding) method gets the content of the InputStream and returns a string representation of it. In the end we need to close the InputStream in a finally block.



import java.nio.charset.StandardCharsets;

public class InputStreamToString {
    public static void main(String[] args) throws Exception {
        // Create an input stream for reading data.txt file content.
        try (InputStream is = new FileInputStream(new File("data.txt"))) {
            // Get the content of an input stream as a string using UTF-8
            // as the character encoding.
            String contents = IOUtils.toString(is, StandardCharsets.UTF_8);

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