Is it possible to create a File object from InputStream

user_1527240 0
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Is there any way to create a java.io.File object from an java.io.InputStream ?

My requirement is reading the File from a RAR . I am not trying to write a temporary File, I have a file inside RAR archive which I am trying to read.

io java
7 Answers

Since Java 7, you can do it in one line even without using any external libraries:

Files.copy(inputStream, outputPath, StandardCopyOption.REPLACE_EXISTING);

See the API docs.

user_49290380

Easy Java 9 solution with try with resources block

public static void copyInputStreamToFile(InputStream input, File file) {  

    try (OutputStream output = new FileOutputStream(file)) {
        input.transferTo(output);
    } catch (IOException ioException) {
        ioException.printStackTrace();
    }

}

java.io.InputStream#transferTo is available since Java 9.

user_5161670

If you are using Java version 7 or higher, you can use try-with-resources to properly close the FileOutputStream. The following code use IOUtils.copy() from commons-io.

public void copyToFile(InputStream inputStream, File file) throws IOException {
    try(OutputStream outputStream = new FileOutputStream(file)) {
        IOUtils.copy(inputStream, outputStream);
    }
}
user_897690
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