Given: class Block { String color; int size; Block(int size, String color) { this.size = size; this.color = color; } } and the code fragment: List 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()); Which definition of the ColorSorter class sorts the blocks list?

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Given: class Block { String color; int size; Block(int size, String color) { this.size = size; this.color = color; } } and the code fragment: List 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()); Which definition of the ColorSorter class sorts the blocks list?

Accepted Answer

B. class ColorSorter implements Comparator<Block> {
 public int compareTo(Block o1, Block o2) {
 return o1.color.compareTo(o2.color);
 }
}

Answer

A. class ColorSorter implements Comparable<Block> {
 public boolean compare(Block o1, Block o2) {
 return o1.color.equals(o2.color);
 }
}

Answer

C. class ColorSorter implements Comparator<Block> {
 public int compare(Block o1, Block o2) {
 return o1.color.compareTo(o2.color);
 }
}

Answer

D. class ColorSorter implements Comparator<Block> {
 public boolean compare(Block o1, Block o2) {
 return o1.color.equals(o2.color);
 }
}

Given: class Block { String color; int size; Block(int size, String color) { this.size = size; this.color = color; } } and the code fragment: List<Block> blocks = new ArrayList<>(); blocks.add(new…

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