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Core Java Interview Questions
Questions Answers Views Company eMail

how a programmer confirms that the data submitted has been succesfully inserted into the database(either oracle or my sql).. How a programmer confirm if there is any problem with the program he wrote for insertion

SAP Labs,

2 6109

when a request is generated from apache tomcat 5.5 and goes to oracle 10g or mysql,,, how the oracle or mysql reads the request as apache is a web server and oracle 10g is application server? when the oracle 10g provides response, how the apche tomcat reads it???

SAP Labs,

2158

how we can use debug in myeclipse 6.0 in order solve the problems that exist in our program when there are 900 to 1000 pages in a web application

SAP Labs,

2151

what is the role of xml in core java?? and how we can use it?? can somebody give a sample program with explanation and from where i can read more about xml?????

HCL, SAP Labs, Vital Soft,

2262

In a my eclipse editor if i want to switch from jdk 1.4 to jdk 1.6 how to do that???? Initially i have jdk1.4

Tech Mahindra,

1 5474

for(i=0;i<100;i++) { int i=method();//method returns no's from 1 to 10; /* insert some stmts which can give output like no.of times numbers(1-10) returned. (for example if it returns 2 then i want output how many times 2 returned) like that i want output for no's 1 - 10 how many times each no returned. */ }

3 5466

how come we know the object is no more used in the class?

Accenture,

2 6461

what is the use of StringBuffer?

Accenture,

2 6588

what value will be return by the read() method once it reaches the end-of-file? a. Throws EOException b. Return null c. Return -1 d. Read method return nothing, because it is void method

1 4414

An inner class can actually be a subclass of the outer class? a. true b. false

2 5498

WHAT IS MARKER INTERFACE,AND NO METHODS IS NOT THERE ON THAT INTERFACE THEN WHY WE USED IN JAVA?

L&T,

3 7706

Is it possible to do method overloading and overriding at a time

L&T,

3 9321

why java uses class level type casting ?

2657

how a programmer confirms that the data submitted has been succesfully inserted into the database(either oracle or my sql).. How a programmer confirm if there is any problem with the program he wrote for insertion... ANS:--- >executeupdate method is having boolean return type, if anything goes wrong in data insertion or data updation, it would return false. otherwise, if it successfully inserts data into the database, it would return true NOW HOW TO I CHECK IN MY DURING EXECUTION WHETHER IT RETURNS TRUE OR FALSE... WELL IT WILL DISPLAY ANY MESSAGE OR NOT

Google,

2420

where can we get jAVA project orientation traing in HYDERABD

1994


Post New Core Java Questions

Un-Answered Questions { Core Java }

Write a program to solve producer consumer problem in java?

1006


What do you mean by mnemonics?

1048


What is connection class in java?

957


Difference between object instantiation and construction ?

1057


How do you write methodology?

982


Why for each loop is used?

1011


What is object class in java?

919


What is overloading and overriding in java?

1221


What is the significance of java packages?

1104


What is the memory leak in java?

1029


Why generics are used in java?

1036


What are the advantages and disadvantages of object cloning?

1105


What is the difference between access specifiers and access modifiers in java?

1166


What is == in java?

1012


What environment variables are required to be set on a machine in order to run Java programs?

1187