Manhattan Associates
There are 4 rounds:Written TestTechnical InterviewCEO interviewHR interviewThe Written test pattern:50 Questions -- 1.5 hours of time.Most of the questions are multiple choice.The split up is :EJB (10 Questions)JAVA (20 Questions)JSP (5 Questions)MISLLENEOUS - XML, JDBC etc (5 Questions)ANALYTICAL (5 Questions)SQL (5 Questions)
Our written test is held on 17 Jan 2004 in Le Meridian hotel, Chennai.I have written down whatever questions I remember so that it will be useful to those who will be taking the test in future and also for those appearing for J2EE interviews.I have given the questions in Written Test and Technical Interview.I didn't have the other interviews. ---------------------------------------------------- ----------------------------------------------------EJB----------------------------------------------------1) What is true about 'Primary Key class' in Entity Beans ?(a) Used to identify the entity bean based on EJB type, Home Interface and Container Context.(b) Used to identify the entity bean based on EJB type, Remote Interface and Container Context.(c) The definition of Primary Key class can be deferred till deployment--------------------2) The Home Interface in Entity beans(a) Provides at least one create() method(b) May not provide any create() method(c) Provides at least one findByPrimaryKey() method(d) May not provide any findByPrimaryKey() method --------------------3) In CMP of Entity beans(a) Constructor with no arguments is defined(b) Constructor is not defined--------------------4) What is the purpose of ejbLoad()--------------------5) What is the purpose of ejbStore()--------------------6) In EJB, when a system error occurs, which exception is thrown ?(a) EJBException(b) RemoteException--------------------7) In EJB, which of the following is an application level Exception ?(a) NullPointerException(b) ArrayOutOfBoundsException(c) CreateException(d) ObjectNotFoundException(e) All the above(f) None of the above--------------------8) CMP bean provides(a) Empty implementation of ejbLoad() and ejbStore()(a) Concrete implementation of ejbLoad() and ejbStore()----------------------------------------------------
----------------------------------------------------JSP and Mislleneous----------------------------------------------------1) What is the purpose of XSL(a) Convert XML to HTML(b) Convert HTML to XML--------------------2) resultSet has the following methods(a) next()(b) first()(c) a & b(d) No methods--------------------3) In WebLogic clusters, what is the load balancing algorithm ?(a) RoundRobin(b) FIFO(c) LIFO--------------------4) How many Queues does a MDB listen to ?(a) 1(b) 2(c) Any Number(d) 10--------------------5) Where is the Deployment Descriptor placed ?(a) WEB-INF directory(b) WEB-INF/CLASSES directory(c) It will be mentioned in CLASSPATH(d) The place can be specified in APPLICATION.xml--------------------6) To denote distributed applications, What is the tag used in Deployment Descriptor ?(a) distributable(d) distributed="true"(c) both a & b--------------------7) Can a JSP be converted to SERVLET and the vice versa always ?(a) YES(b) NO--------------------8) Empty JSP Tag definitions are given in Deployment Descriptor. Then which of the following syntaxes are correct ?(I don't remember the options)--------------------9) One small question on tag---------------------------------------------------- ----------------------------------------------------JAVA----------------------------------------------------
1) Which of the following 2 methods executes faster ?class Trial { String _member; void method1() { for(int i=0;i<2048;i++) { _member += "test"; } } void method2() { String temp; for(int i=0;i<2048;i++) { temp += "test"; } _member = temp; } }
(a) method1()(b) method2()(c) Both method1() and method2() takes same time for execution--------------------2) Integer.parseInt("12a") returns(a) Exception(b) 1(c) 0(d) -1--------------------3) By default, Strings to functions are passed using the method(a) Call by Value(b) Call by Reference(c) Strings cannot be passed to function--------------------4) What is the difference between OVERRIDING and OVERLOADING--------------------5) What is the output of following program ?class Test { public static void main(String args[]) { for(int i=0;i<2;i++) { System.out.println(i--); } }}(a) Goes into infinite loop(b) 0,1(c) 0,1,2(d) None--------------------6) 't' is the reference to a class that extends THREAD. Then how to suspend the execution of this thread ?(a) t.yield()(b) yield(t)(c) yield(0(d) yield(100) where 100 is the milli seconds of time--------------------7) What is the functionality of instanceOf() ?--------------------8) How many String objects are created by the following statements ?String str = " a+b=10 ";trim(str)str.replace(+,-);(a) 1(b) 2(c) 3(d) 4--------------------9) (A program is given. I don't remember exactly)An ABSTRACT class is declared and the code is tried to instantiate it. The Question was whether it's legal to do it or not ?--------------------10) A question on "interface"--------------------11) Cleaning operation in Java is done in the method(a) finally()(b) finalize()(c) final()--------------------12) Question on whether Static method can be overriden--------------------13) How to prevent a class from being the Base Class ?(a) declare it as final(b) declare it as static--------------------14) If we want to read a very big text file with so many mega bytes of data, what shall we use ?(a) FileInputStream(b) InputStreamReader(c) BufferedReader--------------------15) One Question on Inner Classes. --------------------16) One program on Overloading and Overriding--------------------17) A program given using try, catch and finally and it is asked to find out which statements get executed ?--------------------18) What code, if written, below the (//code here) will display 0.class { public static void main(String argv[]) { int i=0; //code here }}
(a) System.out.println(i++)(b) System.out.println(i+'0')(c) System.out.println(i--)(d) System.out.println(i)--------------------19) What is the better way of writing the Constructor with 2 parameters in the following code:class Test { int x,y; Test(int a) { //Code for very complex operations will be written //in this place x=a; } Test(int a, int b) { //Code for very complex operations will be written //in this place (same code as in above constructor) x=a; y=b; } }---------------------------------------------------- ----------------------------------------------------SQL----------------------------------------------------
2 Table Structures are given. (Something like Employee ID, Salary, Department etc)And there are 3 queries. I remember one query.Write query to find the employees with top 5 salaries ?--------------------And there 2 more theoritical SQL questions1) What is the difference between UNION and UNION ALL ?2) What is the difference between COMMIT and ROLLBACK ?---------------------------------------------------- ----------------------------------------------------ANALYTICAL----------------------------------------------------5 very easy Questions. Need not bother much about it.----------------------------------------------------
----------------------------------------------------TECHNICAL INTERVIEW ----------------------------------------------------1) Tell about yourself 2) Why do you want to leave the present company ?3) What do you know about our (Manhattan Associates) company ?4) About EJB types. CMP, BMP, Session, Entity beans, their differences, when to use what type of beans ?5) Can a Client Context call ejbRemove() method ?6) Who calls the methods ejbLoad() and ejbStore() and where the state information is stored when they are called ?7) Do you know about Sequence Diagrams in UML ?8) Which is faster in execution - JSP or SERVLET ? Why ?9) What is the difference between Callable Statement and Prepared Statement?10) Can we declare final method in abstract class ?11) Can we declare abstract method in final class ?12) What is the difference between Inner Join and Outer Join ?13) How can you pass an object of data from one JSP to another JSP ?14) When these methods are used ? ejbActivate(), ejbPassivate() and ejbRemove() ?15) Can the same object of Stateless Session bean be shared by multiple clients ?16) Can the same object of Stateful Session bean be shared by multiple clients ?17) How do you manage transactions in EJB ?
Our written test is held on 17 Jan 2004 in Le Meridian hotel, Chennai.I have written down whatever questions I remember so that it will be useful to those who will be taking the test in future and also for those appearing for J2EE interviews.I have given the questions in Written Test and Technical Interview.I didn't have the other interviews. ---------------------------------------------------- ----------------------------------------------------EJB----------------------------------------------------1) What is true about 'Primary Key class' in Entity Beans ?(a) Used to identify the entity bean based on EJB type, Home Interface and Container Context.(b) Used to identify the entity bean based on EJB type, Remote Interface and Container Context.(c) The definition of Primary Key class can be deferred till deployment--------------------2) The Home Interface in Entity beans(a) Provides at least one create() method(b) May not provide any create() method(c) Provides at least one findByPrimaryKey() method(d) May not provide any findByPrimaryKey() method --------------------3) In CMP of Entity beans(a) Constructor with no arguments is defined(b) Constructor is not defined--------------------4) What is the purpose of ejbLoad()--------------------5) What is the purpose of ejbStore()--------------------6) In EJB, when a system error occurs, which exception is thrown ?(a) EJBException(b) RemoteException--------------------7) In EJB, which of the following is an application level Exception ?(a) NullPointerException(b) ArrayOutOfBoundsException(c) CreateException(d) ObjectNotFoundException(e) All the above(f) None of the above--------------------8) CMP bean provides(a) Empty implementation of ejbLoad() and ejbStore()(a) Concrete implementation of ejbLoad() and ejbStore()----------------------------------------------------
----------------------------------------------------JSP and Mislleneous----------------------------------------------------1) What is the purpose of XSL(a) Convert XML to HTML(b) Convert HTML to XML--------------------2) resultSet has the following methods(a) next()(b) first()(c) a & b(d) No methods--------------------3) In WebLogic clusters, what is the load balancing algorithm ?(a) RoundRobin(b) FIFO(c) LIFO--------------------4) How many Queues does a MDB listen to ?(a) 1(b) 2(c) Any Number(d) 10--------------------5) Where is the Deployment Descriptor placed ?(a) WEB-INF directory(b) WEB-INF/CLASSES directory(c) It will be mentioned in CLASSPATH(d) The place can be specified in APPLICATION.xml--------------------6) To denote distributed applications, What is the tag used in Deployment Descriptor ?(a) distributable(d) distributed="true"(c) both a & b--------------------7) Can a JSP be converted to SERVLET and the vice versa always ?(a) YES(b) NO--------------------8) Empty JSP Tag definitions are given in Deployment Descriptor. Then which of the following syntaxes are correct ?(I don't remember the options)--------------------9) One small question on
1) Which of the following 2 methods executes faster ?class Trial { String _member; void method1() { for(int i=0;i<2048;i++) { _member += "test"; } } void method2() { String temp; for(int i=0;i<2048;i++) { temp += "test"; } _member = temp; } }
(a) method1()(b) method2()(c) Both method1() and method2() takes same time for execution--------------------2) Integer.parseInt("12a") returns(a) Exception(b) 1(c) 0(d) -1--------------------3) By default, Strings to functions are passed using the method(a) Call by Value(b) Call by Reference(c) Strings cannot be passed to function--------------------4) What is the difference between OVERRIDING and OVERLOADING--------------------5) What is the output of following program ?class Test { public static void main(String args[]) { for(int i=0;i<2;i++) { System.out.println(i--); } }}(a) Goes into infinite loop(b) 0,1(c) 0,1,2(d) None--------------------6) 't' is the reference to a class that extends THREAD. Then how to suspend the execution of this thread ?(a) t.yield()(b) yield(t)(c) yield(0(d) yield(100) where 100 is the milli seconds of time--------------------7) What is the functionality of instanceOf() ?--------------------8) How many String objects are created by the following statements ?String str = " a+b=10 ";trim(str)str.replace(+,-);(a) 1(b) 2(c) 3(d) 4--------------------9) (A program is given. I don't remember exactly)An ABSTRACT class is declared and the code is tried to instantiate it. The Question was whether it's legal to do it or not ?--------------------10) A question on "interface"--------------------11) Cleaning operation in Java is done in the method(a) finally()(b) finalize()(c) final()--------------------12) Question on whether Static method can be overriden--------------------13) How to prevent a class from being the Base Class ?(a) declare it as final(b) declare it as static--------------------14) If we want to read a very big text file with so many mega bytes of data, what shall we use ?(a) FileInputStream(b) InputStreamReader(c) BufferedReader--------------------15) One Question on Inner Classes. --------------------16) One program on Overloading and Overriding--------------------17) A program given using try, catch and finally and it is asked to find out which statements get executed ?--------------------18) What code, if written, below the (//code here) will display 0.class { public static void main(String argv[]) { int i=0; //code here }}
(a) System.out.println(i++)(b) System.out.println(i+'0')(c) System.out.println(i--)(d) System.out.println(i)--------------------19) What is the better way of writing the Constructor with 2 parameters in the following code:class Test { int x,y; Test(int a) { //Code for very complex operations will be written //in this place x=a; } Test(int a, int b) { //Code for very complex operations will be written //in this place (same code as in above constructor) x=a; y=b; } }---------------------------------------------------- ----------------------------------------------------SQL----------------------------------------------------
2 Table Structures are given. (Something like Employee ID, Salary, Department etc)And there are 3 queries. I remember one query.Write query to find the employees with top 5 salaries ?--------------------And there 2 more theoritical SQL questions1) What is the difference between UNION and UNION ALL ?2) What is the difference between COMMIT and ROLLBACK ?---------------------------------------------------- ----------------------------------------------------ANALYTICAL----------------------------------------------------5 very easy Questions. Need not bother much about it.----------------------------------------------------
----------------------------------------------------TECHNICAL INTERVIEW ----------------------------------------------------1) Tell about yourself 2) Why do you want to leave the present company ?3) What do you know about our (Manhattan Associates) company ?4) About EJB types. CMP, BMP, Session, Entity beans, their differences, when to use what type of beans ?5) Can a Client Context call ejbRemove() method ?6) Who calls the methods ejbLoad() and ejbStore() and where the state information is stored when they are called ?7) Do you know about Sequence Diagrams in UML ?8) Which is faster in execution - JSP or SERVLET ? Why ?9) What is the difference between Callable Statement and Prepared Statement?10) Can we declare final method in abstract class ?11) Can we declare abstract method in final class ?12) What is the difference between Inner Join and Outer Join ?13) How can you pass an object of data from one JSP to another JSP ?14) When these methods are used ? ejbActivate(), ejbPassivate() and ejbRemove() ?15) Can the same object of Stateless Session bean be shared by multiple clients ?16) Can the same object of Stateful Session bean be shared by multiple clients ?17) How do you manage transactions in EJB ?
posted by Arjun | 10:44 PM
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