Creating an instance from MyClass.class with multiple parameters

Question

I want to create an instance of Item.class. It takes two objects as constructor parameters.

First FirstObject = new First();
Second SecondObject = new Second();

 Class[] constructorArgs = new Class[]{First.class,Second.class};

 Item.class.getConstructor(constructorArgs).newInstance(FirstObject, SecondObject);

this doesn't seem to work. I get a compiler error that says:

unhandled exception Java.Lang.NoSuchMethodException

How to fix?

Please! Don't name variables starting with a capital letter. Do `firstObject` instead of `FirstObject`. It makes it look like a class. — MCMastery, Jul 05 '15 at 01:01

score 2 · Accepted Answer · answered Jul 05 '15 at 01:05

2

NoSuchMethodExceptionis a checked exception so you either need to wrap your getConstructor() call in a try-catch block or declare that the method where this code is throws this exception.

try {
    Item.class.getConstructor(constructorArgs).newInstance(FirstObject, SecondObject);
} catch (NoSuchMethodException e) {
  // log the error
  e.printStackTrace();
}

answered Jul 05 '15 at 01:05

Ravi K Thapliyal

51,095
9
76
89

Thank you, this fixed the problem. – Mike James Johnson Jul 05 '15 at 01:34

Creating an instance from MyClass.class with multiple parameters

1 Answers1