Oracle Updated 1z0-809 Exam Questions and Answers by ismael

Given:

class CheckClass {

public static int checkValue (String s1, String s2) {

return s1 length() – s2.length();

}

}

and the code fragment:

String[] strArray = new String [] {“Tiger”, “Rat”, “Cat”, “Lion”}

//line n1

for (String s : strArray) {

System.out.print (s + “ “);

}

Which code fragment should be inserted at line n1 to enable the code to print Rat Cat Lion Tiger?

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:

Listli = Arrays.asList(new Emp(“Sam”, 20), New Emp(“John”, 60), New Emp(“Jim”, 51));

Predicate agVal = s -> s.getEAge() > 50;//line n1

li = li.stream().filter(agVal).collect(Collectors.toList());

Stream names = li.stream()map.(Emp::getEName);//line n2

names.forEach(n -> System.out.print(n + “ “));

What is the result?

Given the code fragment:

Stream> iStr= Stream.of (

Arrays.asList (“1”, “John”),

Arrays.asList (“2”, null)0;

Stream< nInSt = iStr.flatMapToInt ((x) -> x.stream ());

nInSt.forEach (System.out :: print);

What is the result?

Given the code fragment:

What is the result?