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java ²å¼þ¼ÓÔØ

package tao.hai.bing;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
public class LoadJar {
 public static void main(String[] args)
 {
  System.out.println(System.getProperty("user.dir"));
  String uri = "file:/G:/java/tao.jar";
  try {
   URL url = new URL(uri);
   URLClassLoader loader = new URLClassLoader(new URL[]{url});
   Class myClass = loader.loadClass("tao.hai.bing.print.Press");
   Object object = myClass.newInstance();
   Method method = myClass.getMethod("myPress", String.class);
   method.invoke(object, "taohaibing22");
   System.out.println(myClass.getName());
  } catch (MalformedURLException e) {
   e.printStackTrace();
  } catch (ClassNotFoundException e) {
   e.printStackTrace();
  } catch (InstantiationException e) {
   e.printStackTrace();
  } catch (IllegalAccessException e) {
   e.printStackTrace();
  } catch (SecurityException e) {
   e.printStackTrace();
  } catch (NoSuchMethodException e) {
   e.printStackTrace();
  } catch (IllegalArgumentException e) {
   e.printStackTrace();
  } catch (InvocationTargetException e) {
   e.printStackTrace();
  }
 }
}


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