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Java IO & NIO - Files.newInputStream() Examples

[Last Updated: Oct 30, 2025]

Java IO & NIO Java Java API 

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Class:

java.nio.file.Files

java.lang.Objectjava.lang.Objectjava.nio.file.Filesjava.nio.file.FilesLogicBig

Method:

public static InputStream newInputStream(Path path,
                                         OpenOption... options)
                                  throws IOException

Opens a file, returning an input stream to read from the file.

Parameters:
path - the path to the file to open
options - options specifying how the file is opened
Returns:
a new input stream


Examples


package com.logicbig.example.files;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Scanner;

public class NewInputStreamExample {

    public static void main(String... args) throws IOException {
        Path path = Files.createTempFile("test-file", ".txt");
        Files.write(path, "test content...".getBytes());

        try (InputStream inputStream = Files.newInputStream(path)) {
            String s = inputStreamToString(inputStream);
            System.out.println(s);
        }
    }

    public static String inputStreamToString(InputStream inputStream) {
        //In Java 9 use inputStream.readAllBytes()
        return new Scanner(inputStream,
                "UTF-8").useDelimiter("\\A").next();
    }
}

Output

test content...

See Also