CODEWITHSUNDEEP
javareflectionurlclassloader
Yunkhan
Yunkhan

Reputation: 53

How to load methods from a jar without loading class?

I am trying to read a Jar file which contains few classes and has methods defined in it. I want to get all the declared methods from all the classes without loading individual classes. is it possible?

Here's how I am loading jar file and method(Using class name as of now).

File urlclasspath = new File(newJarPath);
        URL urlarray[] = new URL[1];
        urlarray[0] = urlclasspath.toURI().toURL();
        ClassLoader loader = new ClassLoader(urlarray);
        Class<?> myclass = loader
                .loadClass($classname$);

        Object obj = myclass.newInstance();
        Method add = myclass.getMethod("add", new Class[] { Integer.TYPE,
                Integer.TYPE });
        add.invoke(obj,
                new Object[] { new Integer(var1), new Integer(var2) });

        if (obj == null) {
            System.out
                    .println("FAIL: Could not create an instance of the loaded class");
            }

Thanks in advance

Upvotes: 0

Views: 284

Answers (1)

Sanjeev
Sanjeev

Reputation: 9946

Class is the container for all the methods with in. so in order to reach to a method you must load the class first.

Upvotes: 1

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