SCJP 5 Free Mock Exam

Question 1 of 25 [Declarations, Initialization and Scoping]

Code : Parent.java

class Parent
{

void aMethod(String args){

}

}
 class Child extends Parent { 

}      

}

Which of the following methods are valid at Child class?

Choice 1 void aMethod(int number) {}

Choice 2 String aMethod(String args) {}

Choice 3 private void aMethod(String args) {}

Choice 4 protected void aMethod(String args) throws IndexOutOfBoundsException {}

Question 2 of 25 [Declarations, Initialization and Scoping]

Code : Test.java

class Test {

public static void main(String... arg) {

System.out.print("Inside main"+arg);

}

public static void main(String[] arg) {

main(arg);

}

}

What will be the output of compiling and running the Test class with "Java Tiger" as the command line argument?

Choice 1 Compiles and runs without any output.

Choice 2 Exception at runtime.

Choice 3 Inside MainJava Tiger

Choice 4 Inside MainJava

Choice 5 Compiler Error

Question 3 of 25 [Declarations, Initialization and Scoping]

Code : Inner.java

class Inner {

public static void main(String[] args) { 

Inner inner = new Inner();

inner.new Outer().innerMethod(); 

}

final int num = 2399;

class Outer { 

int num=9932; 

void innerMethod() {

System.out.println( -------------);

}

}

}

Which of the following code snippets can be inserted on the-------------to print 2399?

Choice 1 Inner.this.num

Choice 2 super.num

Choice 3 num

Choice 4 Outer.Inner.num

Choice 5 Inner.Outer.num

Choice 6 None of the above

Question 4 of 25 [Declarations, Initialization and Scoping]

Code : Customer.java

  class Customer {

static String accountNumber = ""; 

public Customer() {  }

static String getAccountNumber() {

return accountNumber; } 

} 

class CreditCardCustomer extends Customer { 

public String getAccountNumber() throws RuntimeException {

return accountNumber;

} 

}

What will happen when you compile and run the Customer class?

Choice 1 Compilation error

Choice 2 Runtime error

Choice 3 Compiles and runs without any error

Choice 4 getAccountNumber method of CreditCardCustomer objects throws RuntimeException

Question 5 of 25 [Flow Control]

Which of the following statements are TRUE about checked exception?
Choice 1	Represents the defects in the program.
Choice 2	Are subclasses of exception.
Choice 3	Are subclasses of RuntimeException, and are usually implemented using IllegalArgumentException, NullPointerException, or IllegalStateException.
Choice 4	Represent invalid conditions in areas outside the immediate control of the program

Question 6 of 25 [Flow Control]

Code : Test.java

1. class Test { 

2. public static void main(String [] args) { 

3. new Test().testMethod(); 

4. } 

5. 

6.  void testMethod() { 

7. try { 

8. System.out.println("Java"); 

9. return; 

10. } 

11. finally { 

12. System.exit(0);

13. System.out.println(" Tiger"); 

14. } 

15. } 

16. }

Which of the following statement about the given code is TRUE?

Choice 1 Compiler error at line 13.

Choice 2 Compile time error. Catch block is missing.

Choice 3 Prints "Java"

Choice 4 Prints "Java Tiger "

Choice 5 Prints "Tiger"

Question 7 of 25 [Flow Control]

Code : Sample.java

  class Sample {

public static void main(String args[]) {

int arg = 10; 

switch (arg) { 

case 0: System.out.print("Java "); 

case 10: System.out.print("JSP "); 

case 20: System.out.print("EJB "); 

case 30: System.out.print("JMS "); 

case 40: System.out.print("JNDI "); break;

default: System.out.print("None "); 

}

}

}

What will happen when you compile and run the Sample class?

Choice 1 JSP

Choice 2 JSP None

Choice 3 JSP EJB JMS JNDI

Choice 4 JSP EJB JMS

Question 8 of 25 [Flow Control]

Code : // Bank.java

    package bank; 

public class Bank{ 

String getBankBranchName() {

return "Head Office"; 

} 

}

// BankBranch.java

package bankBranch;

import bank.*;

public class BankBranch extends Bank {

String bankBranchName=null;

String getBankBranchName(){

super.getBankBranchName();

} 

}

What will happen when you compile and run the Bank and BankBranch classes?

Choice 1 Bank class will compile and BankBranch will not

Choice 2 Both classes will not compile

Choice 3 BankBranch class will compile and Bank will not

Choice 4 Both compiles without any error

Question 9 of 25 [API Contents]

Code: Test.java

  import java.io.*;

class Test{ 

public static void main(String[] args) throws IOException { 

Writer w=new BufferedWriter(new FileWriter("FILE.TXT")); 

}

}

What will happen when you try to compile and run the following code without FILE.TXT?

Choice 1 Compiler error

Choice 2 FileNotFoundException will be thrown

Choice 3 IOException will be thrown

Choice 4 The code compiles and runs without any error

Question 10 of 25 [API Contents]

Locale.getAvailableLocales method must return an array that contains at least a Locale instance equal to Locale.US.
Choice 1	True
Choice 2	False

Question 11 of 25 [API Contents]

The following method names are present in both String and Pattern classes.
Choice 1	split
Choice 2	concat
Choice 3	compile
Choice 4	length
Choice 5	matches

Question 12 of 25 [API Contents]

Which of the following statements are TRUE about File class?
Choice 1	File(String) constructor creates a new File instance by converting the given pathname string into an abstract pathname. If the given string is the empty string, then the result is the empty abstract pathname.
Choice 2	File(String) constructor creates a new File instance by converting the given pathname string into an abstract pathname. If the given string is the empty string, then it will throw FileNotFoundException.
Choice 3	File(String) constructor creates a new File instance by converting the given pathname string into an abstract pathname. If the given string is the empty string, then it will throw IOException.
Choice 4	File class is used to create directories.

Question 13 of 25 [Concurrency]

Which of the following statements are TRUE?
Choice 1	Interrupted method stops the current thread temporarily.
Choice 2	Interrupted method always interrupts the thread and returns true.
Choice 3	Interrupted method returns true if the current thread has been interrupted; false otherwise.
Choice 4	Interrupted method clears the interrupted status of the thread.

Question 14 of 25 [Concurrency]

Which of the following method by invoking on an object causes all threads waiting for that object's lock to wake up?
Choice 1	notify()
Choice 2	run()
Choice 3	create()
Choice 4	notifyAll()

Question 15 of 25 [OO Concepts]

Code :


class Y { }


class X extends Y {

X() { 

System.out.print("Java");

super();

}
}

The above mentioned code compiles successfully.

Choice 1 True

Choice 2 False

Question 16 of 25 [OO Concepts]

Code : Test.java

1. public class Test { 

2. public static void main(String [] args) { 

3. new Test().main(""); 

4. } 

5.

6. public  void main(String...arg) { 

7. System.out.println("Hello"); 

8. } 

9.

10. }

What will happen when you compile and run the Test class?

Choice 1 The code compiles successfully and run with "Hello" as the output

Choice 2 Changing main(String...arg) at line 6. to Main(String arg) will compile successfully

Choice 3 The code fails to compile because of duplicate methods.

Choice 4 Compile time error at line no.5 about the null argument.

Question 17 of 25 [OO Concepts]

Code : CreditCardCustomer.java

class Customer {
String customerID;

private String getCustomerID() { 

return customerID; 

} 

} 

class CreditCardCustomer extends Customer { 

public static void main(String[] argv) { 

Customer brad = new CreditCardCustomer(); 

brad.customerID="12122";

System.out.print(brad.getCustomerID());

} 

String getCustomerID() { 

return customerID;

} 

}

What will happen when you attempt to compile and run the above code?

Choice 1 Compiler error

Choice 2 12122

Choice 3 Runtime error

Choice 4 null

Question 18 of 25 [OO Concepts]

Code : BankBranch.java

class Bank { 
String bankName; 

public String getBranchName() {
return bankName;
} 

} 
public class BankBranch extends Bank
{ 

public static void main(String[] argv) 
{ } 

public String getBranchName() throws Exception {
return bankName;
} 
}

What will happen when you attempt to compile and run the above code?

Choice 1 Compiles and runs without any error

Choice 2 Runtime error

Choice 3 Compile time error

Choice 4 null

Question 19 of 25 [Collections / Generics]

Which of the following methods are defined in the Arrays class?
Choice 1	asList
Choice 2	deepEquals
Choice 3	sort
Choice 4	binarySearch
Choice 5	All of the above

Question 20 of 25 [Collections / Generics]

Which of the following statements are TRUE with respect to Set and Collection?
Choice 1	A Set cannot contain repeated elements.
Choice 2	The equals() method cannot be used to test whether two objects should be considered the same.
Choice 3	The equals() method is used to test whether two objects should be considered the same.
Choice 4	A Set can contain repeated elements.

Question 21 of 25 [Collections / Generics]

Code : PayRoll.java


import java.util.*;

public class PayRoll {
public static void main(String[] args) { 

Vector<String> employeeList = new Vector<String>(); 

Vector<Integer> employeeIdList = new Vector<Integer>();

Vector<Object> employeeProfileList = new Vector<Object>();

System.out.print(employeeList.getClass()== employeeIdList.getClass()); 

System.out.print(employeeList.equals(employeeProfileList));

System.out.print(employeeList.getClass()== employeeProfileList.getClass()); 

System.out.print(employeeIdList.equals(employeeProfileList)); 

} 

}

What is the result of compiling and running the above code?

Choice 1 Runtime error

Choice 2 Compile error

Choice 3 truefalsetruefalse

Choice 4 falsefalsefalsetrue

Choice 5 falsetruetruetrue

Choice 6 truetruetruetrue

Question 22 of 25 [Collections / Generics]

Code : Student.java



1. public class Student { 

2. public static void main(String[] args) { 

3. Integer studentRollNo = 145; 

4. Object num1 = new String("145"); 

5. Object num2 = studentRollNo; 

6.  studentRollNo = null; 

7. Object num4 = num2.toString(); 

8. 

9. System.out.println(num1.equals(num4)); 

10. } 

11. }

What will happen when you attempt to compile and run the given code?

Choice 1 Runtime error at line 11

Choice 2 Compile time error at line 5

Choice 3 Complie time error at line 7

Choice 4 Runtime error at line 7

Choice 5 Compiles and runs without any error and prints true

Question 23 of 25 [Collections / Generics]

Code : DeptList.java


import java.util.*;

public class DeptList { 

public static void main(String[] args) {

ArrayList deptNoList=new ArrayList<Integer>(); 

deptNoList.add(0); 

deptNoList.add(1); 

deptNoList.add(5); 

deptNoList.add(19);

deptNoList.add(101);

deptNoList.add(600);

for( ---- deptNo : deptNoList) {

System.out.print(deptNoList+" "); 

if(deptNo.equals(5))

break;

}

} 

}

Replace the --- with the correct choice to compile and run the code successfully.

Choice 1 int

Choice 2 String

Choice 3 Integer

Choice 4 Object

Choice 5 Number

Question 24 of 25 [Fundamentals]

&, \| always have a numeric operands.
Choice 1	True
Choice 2	False

Question 25 of 25 [Fundamentals]

Code : DeptList.java


package com.epl.test; 

class Test {
 
public static void main(String[] args) {
 
System.out.println("Package");

}
 
}

Select the correct command to run the code.

Choice 1 java -classpath /com/epl/test; com.epl.test.Test

Choice 2 java com.epl.test.Test

Choice 3 java com/epl/test/Test

Choice 4 java com/epl/test/ com.epl.test.Test

Choice 5 java Test