How to get file content in java?

Not the built-in API – but Guava does, amongst its other treasures. (It’s a fabulous library.)

String content = Files.toString(new File("file.txt"), Charsets.UTF_8);

There are similar methods for reading any Readable, or loading the entire contents of a binary file as a byte array, or reading a file into a list of strings, etc.

Note that this method is now deprecated. The new equivalent is:

String content = Files.asCharSource(new File("file.txt"), Charsets.UTF_8).read();