Patrick Patrick - 1 year ago 153
Java Question

Dumping a Java StringBuilder to File

What is the most efficient/elegant way to dump a StringBuilder to a text file?

You can do:


But is this efficient for a very long file?

Is there a better way?

Answer Source

As pointed out by others, use a Writer, and use a BufferedWriter, but then don't call writer.write(stringBuilder.toString()); instead just writer.append(stringBuilder);.

EDIT: But, I see that you accepted a different answer because it was a one-liner. But that solution has two problems:

  1. it doesn't accept a java.nio.Charset. BAD. You should always specify a Charset explicitly.

  2. it's still making you suffer a stringBuilder.toString(). If the simplicity is really what you're after, try the following from the Guava project:

Files.write(stringBuilder, file, Charsets.UTF_8)

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