Answer by finnw for How do I create a Java string from the contents of a file?

Guava has a method similar to the one from Commons IOUtils that Willi aus Rohr mentioned:

import com.google.common.base.Charsets;import com.google.common.io.Files;// ...String text = Files.toString(new File(path), Charsets.UTF_8);

EDIT by PiggyPiglet
Files#toString is deprecated, and due for removal Octobor 2019. Instead useFiles.asCharSource(new File(path), StandardCharsets.UTF_8).read();

EDIT by Oscar Reyes

This is the (simplified) underlying code on the cited library:

InputStream in = new FileInputStream(file);byte[] b  = new byte[file.length()];int len = b.length;int total = 0;while (total < len) {  int result = in.read(b, total, len - total);  if (result == -1) {    break;  }  total += result;}return new String( b , Charsets.UTF_8 );

Edit (by Jonik): The above doesn't match the source code of recent Guava versions. For the current source, see the classes Files, CharStreams, ByteSource and CharSource in com.google.common.io package.