Gajendra Kangokar

Henry Wong wrote:
And yes, it accepts "F", which has a value of 15. What is value of "X" in Hex?

Yes.X is an invalid character in Hex ,hence it is not determined.
Thank You Henry.

why is it not valid?
when it accepts F and other letters,why not X?

long x1 = Long.parseLong("AA0F245C", 16); long z1 = Long.parseLong("0XF", 16);
Hi All,
In the above code line 1 executes fine but line 2 throws NumberFormatException.
Why is it so?

Thank You
Gajendra KM

Yes right
import java.util.List; class A{ public List<String> ment(List<String> a){ return null; } public List<Integer> ment(List a){ return null; } }

In rum time the above code becomes

import java.util.List; class A{ public List ment(List a){ return null; } public List ment(List a){ return null; } }

we dont want code that compiles fine but gives error at runtime so compiler does not allow to have such methods

In second example you have used argument List without generics which is equals to List<?>.
That means you have overloaded method instead overriding,so it compiles.

Where as in other two example you are overriding where return type must match to parent method.

hi
my apache-tomcat -7.0.54>logs directory is empty

why is there no log file in apache server?

Hi
Hope I posted the question in the right section of the forum.

In Jenkins we use cron to schedule

there are 6 asterisk . * * * * * * is equal to Minute ,Hour ,Day of month ,Month ,Day of week ,Year .

*/5 * * * *
this implies every 5 minutes.How?
and does /5 belong to first asterisk? if yes,there are only 5 asterisk above. where is 6th asterisk?

and what does following statement mean?

To allow periodically scheduled tasks to produce even load on the system, the 'H' token can be used. For example, people often use '0 0 * * *' for a daily job, but this ends up causing a large spike in midnight. In contrast, doing 'H H * * *' would still execute a job once a day, but the actual time of the day this gets executed will be spread over by Jenkins.

H * * * * *
And what is "H"?

Please clarify me about this.
Thank You

Paweł Baczyński wrote:
Fields of an object are initialized before constructors are called.

Fields of class are not initialized before constructor call but Constructor initializes the fields of class.

Hi
How to print this "" as output?

String a ="""";//compiler error String b = new String("""");//compiler error
Is it possible?
Thank You

Hi,
which thread has highest priority.
Is it the Thread with higher number (8) or lower number (5).
This might be a silly question,still I am confused.

t1.setPriority(5); t2.setPriority(8);
Thank You

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration SYSTEM "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hbmtest</property> <property name="hibernate.connection.username">root</property> <property name="hibernate.connection.password">root</property> <!-- <property name="hbm2ddl.auto">create</property> --> <mapping resource="Employee.hbm.xml"></mapping> </session-factory> </hibernate-configuration>

Hi,

above is my xml configuration using JPA hibernate I have mapped my Entity class as well (Employee),
whenever I start hibernate, Employee table is newly created and i loose all data from the table which was stored last time.

I have also commented this line <!-- <property name="hbm2ddl.auto">create</property> -->.
please someome tell me where i am gone wrong,what is the solution.

Thank you
Gajendra

what is the use of @Retention annotation or how it should be used
RetentionPolicy.RUNTIME
RetentionPolicy.SOURCE
RetentionPolicy.CLASS

when to use each type of retention.
can anyone please give an example

Thank You

Hi
List<DTO> dtos = em.createQuery("SELECT NEW com.example.DTO( o.title, o.version) FROM Entity o").getResultList();
the above query works fine
I want to know what will be the query to get count from the same query.
following things did not work
"SELECT count(o) NEW com.example.DTO( o.title, o.version) FROM Entity o" //did NOT work "SELECT NEW com.example.DTO( o.title, o.version) count(o) FROM Entity o"; //did NOT work

Thank You
Gajendra

the object oriented thought process 4th edition by Matt A.Weisfeld

hello ritchie,
how about object oriented thought process book?if you have read it.
thanks