If you freeze bacon, then thaw it out after it's expiration date, how long is it good for?
up vote 3 down vote. A .o object file file (also .obj on Windows) contains compiled object code (that is, machine code produced by your C or C++ compiler), together with the names of the functions and other objects the file contains. Object files are processed by the linker to produce the final executable.
What is a jar file and how do I open a jar file? The Java Archive, or JAR, is a compressed file used by the Java Runtime Environment to distribute programs and libraries written in Java. JAR files contain CLASS files and application resources. Some mobile games, Mozilla Firefox, Thunderbird, SeaMonkey and Sunbird use JAR files to store themes and add-ons.