Given:
and the code fragment:
Which definition of the ColorSorter class sorts the blocks list?
A.
B.
C.
D.
Exam 1z0-809 All QuestionsBrowse all questions from this exam
Question 142
and the code fragment:Correct Answer:
The correct definition for the ColorSorter class that sorts the blocks list is option C. This option implements the Comparator interface, which requires implementing the compare method that takes two Block objects as parameters and returns an integer. The implementation compares the color attributes of the Block objects using the compareTo method of the String class, which is the appropriate way to compare two strings lexicographically. Therefore, option C is the correct answer.
Discussion
Tarik2190
Answer is C, import java.util.*; class Block { String color; int size; public Block(int size, String color) { this.color = color; this.size = size; } @Override public String toString() { return "Block{" + "color='" + color + '\'' + ", size=" + size + '}'; } } class ColorSorter<B> implements Comparator<Block> { public int compare(Block o1, Block o2) { return o1.color.compareTo(o2.color); } } public class Test { public static void main (String[] args) throws InterruptedException { List<Block> blocks = new ArrayList<>(); blocks.add(new Block(10, "Green")); blocks.add(new Block(7, "Red")); blocks.add(new Block(12, "Blue")); Collections.sort(blocks, new ColorSorter()); System.out.println(blocks); } }
harshgupta1990
c is correct. Tested
steefaand
C is true. With Comparator you must override public int compare(Block b1, Block b2) method.