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Author Question: Which of the following can be used to replace YYYYYYYY in the following code? public class ... (Read 80 times)

j.rubin

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  • Posts: 557

Question 1

Is ArrayList same as ArrayList?
◦ Yes
◦ No

Question 2

Which of the following can be used to replace YYYYYYYY in the following code?

public class WildCardDemo3 {
public static void main(String[] args) {
GenericStack stack1 = new GenericStack();
GenericStack stack2 = new GenericStack();
stack2.push("Java");
stack2.push(2);
stack1.push("Sun");
add(stack1, stack2);
WildCardDemo2.print(stack2);
}

public static void add(GenericStack stack1,
GenericStack stack2) {
while (!stack1.isEmpty())
stack2.push(stack1.pop());
}
}

◦ ? super Object
◦ ? super T
◦ ? extends Object
◦ ? extends T


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Marked as best answer by j.rubin on May 6, 2020

ricroger

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j.rubin

  • Member
  • Posts: 557
Reply 2 on: May 6, 2020
:D TYSM


AngeliqueG

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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