java - Calling a outside class method from Jar class -


i have created class "class b"

package com.b  public class b {     public void printmsg()         {         system.out.println("called");     } }

i have created jar file below class "class a"

package com.a  import com.b  public class extends b {  }

when tried load jar dynamically using below code, getting error "class b" "classnotfoundexception"

classloader cl = new urlclassloader(new url[] { new url(jarfullpath) }); class<?> cla = cl.loadclass(classname); object obj = cla.newinstance();

i believe because did not provide parent classloader urlclassloader such can find a not b, try instead:

classloader cl = new urlclassloader(     new url[] {new url(jarfullpath)}, thread.currentthread().getcontextclassloader() );

this use thread.currentthread().getcontextclassloader() parent classloader corresponding context classloader.


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