动态类加载 - Java

Question

I am trying to create a program that will search a specified directory for any other jar files (which I will not know the name of). It will then take the object from that file and create an instance of it that can be referenced later in my program.

I am happy to do the research on how to do this on my own, but do not know what this would be called to even start looking.

Anyone able to point me in the correct direction? Thanks

Answer 1

I actually found a link that has a great example in it that is what helped me get it working the most. Find it Here

Answer 2

You should google up java reflection and read some articles / samples upon it.

One good start would be:

• Take an in-depth look at the Java Reflection API , then
• Using Java Reflection and
• Java – Dynamic loading of class and jar file

Answer 3

I faced problem of loading classes while working on a trading application and found following link useful. http://trading.aurorasolutions.org/reflection-dynamically-loading-classes/

Answer 4

IO:

File class

Reading Jar:

JarInputStream class

Loading classes, creating instances and calling methods:

ClassLoader class
Class class
Method class