Java SE 8 Programmer II — Question 20

Given the definition of the Emp class:
public class Emp
private String eName;
private Integer eAge;

Emp(String eN, Integer eA) {
this.eName = eN;
this.eAge = eA;
}
public Integer getEAge () {return eAge;}
public String getEName () {return eName;}
}
and code fragment:
List<Emp>li = Arrays.asList(new Emp("Sam", 20), New Emp("John", 60), New Emp("Jim", 51));
Predicate<Emp> agVal = s -> s.getEAge() > 50; //line n1 li = li.stream().filter(agVal).collect(Collectors.toList());
Stream<String> names = li.stream()map.(Emp::getEName); //line n2 names.forEach(n -> System.out.print(n + " "));
What is the result?

Answer options

• A. Sam John Jim
• B. John Jim
• C. A compilation error occurs at line n1.
• D. A compilation error occurs at line n2.

Correct answer: B

Explanation

The code filters the list of Emp objects based on the condition that their age is greater than 50, which results in 'John' and 'Jim' being the only names printed. The other options are incorrect as line n1 compiles correctly and line n2 has a syntax error due to a missing dot before 'map'.