guru


{ City }
< Country > india
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User No # 17217
Total Questions Posted # 6
Total Answers Posted # 4

Total Answers Posted for My Questions # 11
Total Views for My Questions # 54228

Users Marked my Answers as Correct # 20
Users Marked my Answers as Wrong # 2
Questions / { guru }
Questions Answers Category Views Company eMail

what is wrapper class and its uses?

2 Core Java 5826

can we create instance for interface in java?

4 Core Java 19203

how to display after one month adding today's sysdatedate in jsp?

1 J2EE Code 4695

How do I set password expire time period?

1 JSP 2299

while working struts in intellij 7.0error unable to initialize tld location cache: zip file is closed is displayed anybdy can answer me immdialy .ungert

Banking,

Struts 2026

java.lang.IllegalArgumentException: The path of an ForwardConfig cannot be null while working with struts it displayed pls very ungent

IBM,

3 Servlets 20179




Answers / { guru }

Question { Persistent, 19416 }

Difference between Hash Table and Hash Map?


Answer

hashtable is Synchronised where as hashmap is not.
hash table are legacy classes hashmap are collections

Is This Answer Correct ?    4 Yes 2 No

Question { TCS, 7290 }

what is an anonymous class?


Answer

anonymous class are inner classes that cant not have a
class name and constructor also.

Is This Answer Correct ?    6 Yes 0 No


Question { Virtusa, 5120 }

what is filters and its use?


Answer

filters r java classes which is intercept the client request
before it access a resource in server,then it intercept
server response before its reach clint

request filter

for security

response filter

compresed data

init(),do filter(),destroy are methods of filter

Is This Answer Correct ?    3 Yes 0 No

Question { 5826 }

what is wrapper class and its uses?


Answer

wrapper class used access the primitive data types as objects.
we cant store primitive data in arraylist,hashtable so we
using wrapper class used to store primitive data types as
objects,caz objects only can store in collections

Is This Answer Correct ?    7 Yes 0 No