Determine a the JDK version used to make a JAR file
Friday, April 25th, 2008Maybe there’s already a tool to do this, but a quick Google search only yield this tip. So, I made a quick little JAR reader to fetch the estimated version from the manifest:
import java.util.*;
import java.util.jar.*;
import java.io.*;
/*
* Sends the "estimated" JDK version (expected to be in the jar manifest "Created-By" attribute)
* to System.out.
*/
public [...]