You can use
Scanner to read all of the text in the input as a String, by using
\Z (entire input) as the delimiter. For example, this can be used to read all text in a text file in one line:
String content = new Scanner(new File("filename")).useDelimiter("\\Z").next(); System.out.println(content);
Remember that you'll have to close the Scanner, as well as catch the
IoException this may throw, as described in the example Reading file input using Scanner.