How to declare java generic collect What Yasser Ibrahim @Jobilize

Author: Yasser Ibrahim

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Question 80 / 297: What is the result of compiling and running the following program using jdk 1.5 or higher?

import java.util.ArrayList;
import java.util.List;

interface chewable {}

class Gum implements chewable {}

class Meat implements chewable {}

public class Tester {

	public static void main(String[] args) {
		List list1 = new ArrayList<chewable>();// line 1
		list1.add(new Gum());// line 2
		list1.add(new Meat());// line 3
		list1.add(new Integer(9));// line 4
		System.out.println(list1.size());// line 5
	}
}

A Compilation error at line 1

B Compilation error at line 4

C Runtime exception thrown at line 1

D Runtime exception thrown at line 4

E 3

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