Here it is. thanks.//////

interface UnaryPredicate {

public boolean test(T obj);

}

final class Algorithm {

public static int countIf(Collection c, UnaryPredicate p) {

int count = 0;

for (T elem : c)

if (p.test(elem))

++count;

return count;

}

}

class OddPredicate implements UnaryPredicate {

public boolean test(Integer i) {

return i % 2 != 0;

}

}

class Test {

public static void main(String[] args) {

Collection ci = Arrays.asList(1, 2, 3, 4);

int count = Algorithm.countIf(ci, new OddPredicate());

System.out.println("Number of odd integers = " + count);

}

}

EXERCISE Change this line: int count = Algorithm.countIf(ci, new OddPredicate()); 1. To use Anonymous class, and use it. 2. To use Lambda Expression, and use it. class OddPredicate implements UnaryPredicate { public boolean test(Integer i) { return i % 2 != 0; class Test { public static void main(String[] args) { Collections Integer> ci = Arrays.asList(1, 2, 3, 4); int count = Algorithm.countIf(ci, new OddPredicate()); System.out.println("Number of odd integers = " + count); EXERCISE Change this line: int count = Algorithm.countIf(ci, new OddPredicate()); 1. To use Anonymous class, and use it. 2. To use Lambda Expression, and use it. class OddPredicate implements UnaryPredicate { public boolean test(Integer i) { return i % 2 != 0; class Test { public static void main(String[] args) { Collections Integer> ci = Arrays.asList(1, 2, 3, 4); int count = Algorithm.countIf(ci, new OddPredicate()); System.out.println("Number of odd integers = " + count)