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Java reflection when a method has a variable arglist
public class A {
    public void theMethod(Object arg1) {
        // do some stuff with a single argument
    }
}

public class B {
    public void reflectingMethod(Object arg) {
        Method method = A.class.getMethod("theMethod", Object.class);
        method.invoke(new A(), arg);
    }
}

public class A {
    public void theMethod(Object... args) {
        // do some stuff with a list of arguments
    }
}

public class B {
    public void reflectingMethod(Object... args) {
        Method method = A.class.getMethod("theMethod", /* what goes here ? */);
        method.invoke(new A(), args);
    }
}

A.class.getMethod("theMethod", Object[].class);

public class A {
    public void theMethod(ArrayList<Object> args) { // do stuff
    }
}

public class B {
    public void reflectingMethod(ArrayList<Object> args) {
        Method method;
        try {
            method = A.class.getMethod("theMethod", args.getClass());
            method.invoke(new A(), args);
        } catch (Exception e) {}
    }
}