java - What is the inverse of OutputStreamWriter -

an outputstreamwriter wraps outputstream behind writer interface. if want inverse, want outputstream interface writer? instance want serialize object stringwriter.

the semantic of outputstreamwriter take text , transform according character encoding bytes. common pattern (low level bytes interpreted high level text) isn't surprising find class part of standard java api.

so want writeroutputstream. forgot tell semantics expect such class. can imagine several use cases outputstream wrapping writer:

• convert bytes base64 encoded string
• convert bytes table of hex values
• assuming byte stream encrypted text message: decrypt bytes , write original unencrypted text.
• assuming byte stream values of kind of measuring device: write human readable table containing measured values.

but there no obvious default use case makes sense broad usage. there no writeroutputstream class in standard library. no 1 prevents write such class of own.