Question: Consider the following program fragment: Stack s = new Stack ( ) ; s . push ( 1 ) ; s . push ( 2

Consider the following program fragment:
Stack s= new Stack();
s.push(1);
s.push(2);
s.push(3);
s.pop();
System.out.println(s.peek());
What is the value displayed?
3
1
a runtime error occurs
2
Consider the following program fragment: Stack s

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