NoSuchMethodException even if method defined

NoSuchMethodException even if method defined

Hi

I am loading a class (Student) dynamically from a jar (samplejar.jar) file using URLClassLoader.
Next thing when I want to access method or constructor of the previously loaded class, like this,

Constructor cons = myClass.getConstructor(paramTypes);
I am getting an exception saying:

"java.lang.NoSuchMethodException: samplejar.Student.<init>(int, java.lang.String)"

There is a constructor Student(int, String) defined.
The class from the jar is being loaded properly and I have ensured it.
What might be the reason behind this?
Convey.

Thanks.
View Answers

March 19, 2010 at 11:53 AM

Hi Friend,

Please send your full code.

Thanks









Related Tutorials/Questions & Answers:
NoSuchMethodException even if method defined - Java Beginners
NoSuchMethodException even if method defined  Hi I am loading.... Next thing when I want to access method or constructor of the previously loaded...) defined. The class from the jar is being loaded properly and I have ensured
NoSuchMethodException
NoSuchMethodException  whis is the NoSuchMethodException in java? or define NoSuchMethodException with exp?   This Exception occurs when the method you call does not exist in class. Example import
Advertisements
odd and even
odd and even  how can i make a program of even and odd using case statement?   Hi Friend, Try the following code:ADS_TO_REPLACE_1 import...{ System.out.println(); System.out.println("1 Display Even
user defined date class
user defined date class  Develop a user defined date class with public.Fill the members using existing class method.implement the methods for finding current date(),days between method,advanced days and after days
user defined date class
user defined date class  Develop a user defined date class with public.Fill the members using existing class method.implement the methods for finding current date(),days between method,advanced days and after days
ptor is not defined
ptor is not defined  Hi, I am trying to use the protractor for HTML test cases. Due to some reason it is giving error ptor is not defined. How to resolve ptor is not defined error? Thanks   Hi, If you are still
method
method   how and where, we can define methods ? can u explain me with full programme and using comments
method
method  can you tell me how to write an abstract method called ucapan() for B2 class class A2{ void hello(){ system.out.println("hello from A2"); }} class B2 extends A2{ void hello(){ system.out.println("hello from B2
User Defined Exception In Java
User Defined Exception In Java In terms of programming when we talk about... a method and caused to disrupts the normal flow of statements of program. In Java, when an exception occurs an exception object is created by the method
Even and odd functions in java
Even and odd functions in java  Even and odd functions in java  ...); int number; System.out.println("Input any number to check even...) { if (n % 2 == 0){ System.out.println("Your number " + n + " is even
Check even or odd number.
Check even or odd number.  How to check given number is even or odd?   Simple if it is devided by 2 it is even and if not if is Odd  ...){ System.out.println("Number is Even"); } else
Java BigDecimal divideAndRemainder method example
context settings defined in MathContext class object 'mc'.   Method... Java BigDecimal divideAndRemainder method example       In the example method
JavaScript bold method
JavaScript bold method       One of the method defined in the string to show bold string... and then it will be printed on the browser in the bold manner by applying the bold() method on the string
Java bigdecimal plus method example
plus method. Method always returns a bigdecimal value of positive nature as per context settings defined. In short method return type is plus of this.object... Java bigdecimal plus method example   
USER DEFINED CLASS
USER DEFINED CLASS  hi please help me with my project: Exercise # 1... to assign values to the instance variables. Add a method printDate() to display the date. You also need a method to validate the date. In programming, validation
even more circles - Java Beginners
even more circles  Write an application that compares two circle objects. ? You need to include a new method equals(Circle c) in Circle class. The method compares the radiuses. ? The program reads two radiuses from the user
service method in servlet
service method in servlet In this tutorial you will learn about the service method in servlet that how can it be defined, how to get information from requests , and how the response can be constructed. service method is a method
ModuleNotFoundError: No module named 'even_detector'
ModuleNotFoundError: No module named 'even_detector'  Hi, My... 'even_detector' How to remove the ModuleNotFoundError: No module named 'even_detector' error? Thanks   Hi, In your python
ModuleNotFoundError: No module named 'even_detector'
ModuleNotFoundError: No module named 'even_detector'  Hi, My... 'even_detector' How to remove the ModuleNotFoundError: No module named 'even_detector' error? Thanks   Hi, In your python
ModuleNotFoundError: No module named 'even-tester'
ModuleNotFoundError: No module named 'even-tester'  Hi, My Python... 'even-tester' How to remove the ModuleNotFoundError: No module named 'even-tester' error? Thanks   Hi, In your python environment
NameError: name 'SparkConf' is not defined
NameError: name 'SparkConf' is not defined  Hi, What is solution of the error: NameError: name 'SparkConf' is not defined Thanks   Hi, You should import following line: from pyspark import SparkConf, SparkContext
NameError: name 'SparkConf' is not defined
NameError: name 'SparkConf' is not defined  Hi, What is solution of the error: NameError: name 'SparkConf' is not defined Thanks   Hi, You should import following line: from pyspark import SparkConf, SparkContext
$_GET[] index is not defined
$_GET[] index is not defined  Hi, What could be solution of the error: $_GET['someparameter'] index is not defined Thanks   Hi, You can use the following code: if (isset($_GET['someparameter'])) { // your code
NameError: name 'np' is not defined
NameError: name 'np' is not defined  Hi, In my python program following error is coming: NameError: name 'np' is not defined How to solve this? Thanks   Hi, This error is coming because you have not imported
NameError: name 'metrics' is not defined
NameError: name 'metrics' is not defined  Hi, In one of my machine learning code following error is coming: NameError: name 'metrics' is not defined How to solve this? Thanks   Hi, You should import following
EVEN NUMBERS - Java Interview Questions
EVEN NUMBERS  i want program of even numbers?i want source code plz reply?  Hi Friend, Try the following code: class EvenNumbers... counter = 0; System.out.println("Even Numbers are:" ); for (int i
NameError: name 'false' is not defined
NameError: name 'false' is not defined  Hi, My code is giving NameError: name 'false' is not defined. My code is below: if(filename.endswith(".txt") == true): print("Text file") How to solve? Thanks   HI, You
Java write even numbers to file
have used print() method to store the even numbers to the file.ADS_TO_REPLACE_1...Java write even numbers to file In this section, you will learn how to write the even numbers to file. By using the PrintWriter class, you can write any type
Method
and behaviors are defined by methods. Method : An brief introduction Methods... Method       In this section, we will explore the concept of method in the reference of object oriented
the standard isolation levels defined by JDBC
the standard isolation levels defined by JDBC  What are the standard isolation levels defined by JDBC
user defined function inside a jsp
user defined function inside a jsp  how to write a user defined function inside a jsp page
User defined package problem - Java Beginners
User defined package problem  Hello friend, i was trying to execute the user-defined packages according to the chart that has been given... modifier method show()of Public_Demo1 class but during the compilation of Public_Demo2
main method
to compile. Compiler gives error that the main method is already defined
print the sum of even number from 1 to 100
print the sum of even number from 1 to 100  how to print the sum of even number from 1 to 100 using for loops? Thanks
write a program to create a user defined
write a program to create a user defined   plz send me code   Hi Friend, Please specify what do you want to create?ADS_TO_REPLACE_1 Thanks
ModuleNotFoundError: No module named 'does-this-even-work-anymore'
ModuleNotFoundError: No module named 'does-this-even-work-anymore'  ...: No module named 'does-this-even-work-anymore' How to remove the ModuleNotFoundError: No module named 'does-this-even-work-anymore' error? Thanks
ModuleNotFoundError: No module named 'even-more-itertools'
ModuleNotFoundError: No module named 'even-more-itertools'  Hi, My... named 'even-more-itertools' How to remove the ModuleNotFoundError: No module named 'even-more-itertools' error? Thanks   Hi
Display Hello even before main get executed??
Display Hello even before main get executed??  I have a class (main method) as follow.....As I know this can be done using static method, but Q is how? **class Hello{ public static void main(String[] args
NameError: name 'sc' is not defined
NameError: name 'sc' is not defined - Fixed Beginners finds this error while... the error carefully: NameError: name 'sc' is not defined This is saying that the 'sc' is not defined in the program and due to this program can't be executed. So
Java User-defined Exception
Java User-defined Exception In this tutorial, you will learn about the User-defined Exceptions. These custom exceptions actually all the programmer... a user defined exception if the student marks entered, is less than fifteen
user defined styles for datetimepicker in struts2
user defined styles for datetimepicker in struts2  Hi, sample code: <%@taglib prefix="sx" uri="/struts-dojo-tags"%> Issue: I need to have my own styles for the displyed date picker. is it possible? Can anyone help
user defined styles for datetimepicker in struts2
user defined styles for datetimepicker in struts2  Hi, I am using dojo plugin for displaying datetimepicker. i want to change the colour of the date picker which is in "blue" by default . Please any one can help me
Listing all even numbers between two numbers
Listing all even numbers between two numbers  Hi, How to write code to list all the even numbers between two given numbers? Thanks   Hi, You function will take 2 numbers and the find the even numbers between
How to list even numbers between 1 and 100?
How to list even numbers between 1 and 100?  Hi, I Java to check if a number is even? How to list even numbers between 1 and 100? Thanks   Hi, If number is divisible by 2 then its even number. Suppose you have
JSTL - check odd/even number - JSP-Servlet
JSTL - check odd/even number  How do i create a JSTL program to generate random numbers and to check whether they are odd/even and print "this is an even (odd) number and it is in between so and so number? e.g. the random number
method inside the method??
method inside the method??  can't we declare a method inside a method in java?? for eg: public class One { public static void main(String[] args) { One obj=new One(); One.add(); private static void add
NameError: name 'sc' is not defined
NameError: name 'sc' is not defined - Fixed Beginners finds this error while submitting pyspark job using spark-submit tool. In this section we are going... This is saying that the 'sc' is not defined in the program and due to this program can't
print the even numbers between the range 100-200
print the even numbers between the range 100-200  Q ?write an application that print out the even numbers between the range 100-200 ? 1- which aer... prints out the even numbers between the range of 100 and 200 and then determine
log4j is not logging even under src path
log4j is not logging even under src path  We are working with struts application and using log4j.properties file , it is placed under WEB-INF/classes and we have referenced log4j-1.2.8.jar in classpath file even after
get method
get method   how to use get method: secure method is post method and most of use post method why use a get method

Ads