What's the difference between DataOutputStream and ObjectOutputStream?

Question

I\'m learning about socket programming in Java. I\'ve seen client/server app examples with some using DataOutputStream, and some using ObjectOutputStream

Answer 1

Only objects that implement the java.io.Serializable interface can be written to streams using ObjectOutputStream.Primitive data types can also be written to the stream using the appropriate methods from DataOutput. Strings can also be written using the writeUTF method. But DataInputStream on the other hand lets an application write primitive Java data types to an output stream in a portable way.

Object OutputStream

Data Input Stream