Question 1

Question ID: UK8291180

Given code of Test.java file:

package com.examtest.ocp;

sealed abstract class Animal permits Cat, Dog { } //Line n1

non-sealed class Cat extends Animal { } //Line n2

final class Dog extends Animal { } //Line n3

final class Tiger extends Animal { } //Line n4

public class Test {

public static void main(String [] args) {

System.out.println("PERMITS CLAUSE");

}

What is the result?

Options :

A : Given code compiles successfully and on execution prints PERMITS CLAUSE

B : Line n1 causes compilation error

C : Line n2 causes compilation error

D : Line n3 causes compilation error

E : Line n4 causes compilation error

Answer: A

Question 2

Question ID: UK8297279

Consider below code of Test.java file:

package com.examtest.ocp;

public class Test {

public static void main(String [] args) {

boolean flag1 = true;

boolean flag2 = false;

boolean flag3 = true;

boolean flag4 = false;

System.out.println(!flag1 == flag2 != flag3 == !flag4); //Line n1

System.out.println(flag1 = flag2 != flag3 == !flag4); //Line n2

}

What is the result?

Options :

A : Line n1 causes compilation error

B : Line n2 causes compilation error

C :

true

D :

true

false

E :

false

true

F :

false

Answer: A

Question 3

Question ID: UK8292478

Given code of Test.java file:

package com.examtest.ocp;

import java.util.Arrays;

public class Test {

public static void main(String[] args) {

int [] array1 = {};

int [] array2 = {100, 200};

System.out.print(Arrays.compare(array1, array2));

System.out.print(Arrays.mismatch(array1, array2));

}

What is the result?

Options :

A : -20

B : -10

C : -1-1

D : 00

E :

Compilation error

F : An exception is thrown at runtime

Answer: A

Question 4

Question ID: UK8293374

Which of the following are Java Exception classes?

Choose 3 options.

Options :

A : ClassCastException

B : NullException

C : NumberFormatException

D : IllegalArgumentException

E :

ArrayIndexException

Answer: A,C,D

Question 5

Question ID: UK8298152

Consider below code:

package com.examtest.ocp;

import java.time.LocalDate;

public class Test {

public static void main(String [] args) {

LocalDate d1 = LocalDate.parse("1999-09-09");

LocalDate d2 = LocalDate.parse("1999-09-09");

LocalDate d3 = LocalDate.of(1999, 9, 9);

LocalDate d4 = LocalDate.of(1999, 9, 9);

System.out.println((d1 == d2) + ":" + (d2 == d3) + ":" + (d3 == d4));

}

What is the result?

Options :

A : true:false:true

B : false:false:true

C : true:true:true

D : false:false:false

Answer: D

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