The Data{Input, Output}Stream classes have these methods:
writeUTF
readUTF

These would be more appropriately named:
writeString
readString

These methods are cause confusion because some people are not sure if the UTF encoding is UTF-8 or something else. In fact, it is something else...a "modified" UTF-8. However, the fact that it is any UTF is irrelevant...it is really a String object.