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05. AutoBoxing - 2 (10 questions)	06. Generics 1 - 6 Questions	07. Generics 2 - 7 Questions	08. Generics 3 - 10 Questions
09. Generics 4 - 10 Questions	10. Generics 5 - 10 Questions	11. Generics 6 - 10 Questions	12. Enum 1 - 10 Questions
13. Enums 2 - 10 Questions	14. Enums 3 - 15 Questions	15. Var Args 1 - 10 Questions	16. Var Args 2 - 10 Questions
17. SCJP 5.0 Mock Questions -1	18. Declaration,Access Control-1	19.Java File IO Package - 1	20.Java File IO Package - 2
21.Language Features - 1	22.New Api's - 1 (10 questions)	23.New Api's - 2 (12 questions)	24.Objective - 1 (20 questions)
25.Objective - 2 (10 questions)	26.Objective - 3 (10 questions)	27.Objective - 4 (10 questions)	28.Objective - 5 (10 questions) 29.Objective - 6 (10 questions) 30.Objective - 7 (10 questions)

SCJP 5.0 Objective - 6(10 Questions)

2) What will be the output of the following program?

package scjp5_0.chap06;

import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class Ques01 {

	public static void main(String[] args) {

		List<Box> boxes = Arrays.asList(new Box(10), new Box(-1), new Box(5), new Box(2));
		Collections.sort(boxes, new BoxComparator());

		for (Object box : boxes){
			System.out.print(((Box)box).getSize() + " ");
		}
	}
}

class Box{

	public int size;

	public Box(int size){
		this.size = size;
	}

	public int getSize(){
		return size;
	}
}

class BoxComparator implements Comparator<Box>{

	@Override
	public int compare(Box one, Box two) {

		if (one.getSize() == two.getSize()){
			return 0;
		}else if (one.getSize() < two.getSize()){
			return 1;
		}
		return -1;
	}
}

1. The program will throw a run-time ClassCastException.
2. The program will compile to produce the output '10 -1 5 2'.
3. The program will compile to produce the output '-1 2 5 10'.
4. The program will compile to produce the output '10 5 2 -1'.

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Answer

2)d
The objects of type Box have been arranged in descending order and hence the output will be '10 5 2 -1'.

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