问题
Anyone who uses Java regularly knows the amount of trouble multiple jars in classpath can give us. I am looking for a tool which will help me -
- Search for class files inside jars in Classpath
- Search for class files inside jars in a specific location
- Maybe too much to ask for but show me if the same class is present in multiple jars.
Also needless to say it should be fast. Most of the tools i have evaluated are very slow and not upto the mark.
Any tools for the above purpose greatly appreciated.
Currently i use WinRar achieve search(which BTW is really fast) to search for class files inside jars in a specific location. But there is no way to utilize that to search in Classpath.
回答1:
If you are using eclipse, then IBM's classfinder may be useful. You can perform a (fuzzy) search for a class in a (set of) directories, and get all jar that contains such a class.
Not sure about the classpath option, however.
regards,
Guillaume
回答2:
If you use Bash this script may be helpful:
find . -name *.jar -exec bash -c "echo {} && jar tvf {} | grep MyClass" \;
回答3:
You can use jarbrowser for this
回答4:
If you're using Eclipse, and they're on your classpath, you can CapitalCaseControlSpace what you want.
For example, if I want to get a new ApacheFanUtilityMethodizerFunctor (which everyone needs, of course) I simply type AFUMF and then Ctrl+Space and it populates it for me. Since it's already on my classpath, I don't need to hunt for it, because it's there.
Now, if it wasn't on my classpath, and I had to find what jar it was in for purposes of including it, then back to WinRAR (or for me, Google typically) I go.
回答5:
My own solution for managing java jars files and java classpath is really simple. Firstly I create folder inside e.g.:
C:\Program Files\Java\libraries\
Here I put all my *.jar files which i need to use. Then I modify the:
PATH(modyfy also CLASSPATH or JAVA_HOME)
system variable and add this path shown above.
Problem occurs when one class is in two diffrent jars but I managed my jar to avoid this problem.
Now when java is running jvm can find my classes and ClassNoFoundException isn't thrown.
回答6:
A late response, but in case anyone searching has a similar problem, I wrote a simple tool a few years back that I use all the time for this sort of problem.
It's free to use and open source. If you find it useful, let me know, :-)
https://github.com/eurozulu/Findclass
来源：https://stackoverflow.com/questions/5577543/java-class-finder-tool