Answer Posted / arun kumar samal

no, java is not pure object oriented language due to in java
the primitives data
types(byte,short,int,long,float,double,char,void)are not
objects.to use this type we need each corresponding Wapper
implementation.
e.g:
class A{
Integer i;
public static void main(String... s){
A a=new A();
a.i=new Integer(10);//Boxing before javaSE 5.0
a.i=10;//AutoBoxing from javaSE5.0
}

How can we store and retrieve images from the database?

900

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Why should we close database connections in java?

1090

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How many types of JDBC Drivers are present and what are they?

1059

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What is the purpose of the jdbc resultset interface?

866

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What is statement and preparedstatement in java?

825

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What is resultset?

938

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How can I know when I reach the last record in a table, since JDBC doesn't provide an EOF method?

938

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Discuss the significances of jdbc.

867

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What is a datasource in java?

908

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What class.forname will do while loading drivers of jdbc?

876

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I have the choice of manipulating database data using a byte[] or a java.sql.blob. Which has best performance?

867

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Discuss the procedure of retrieving warnings?

925

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How do I insert/update records with some of the columns having NULL value?

885

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Compare jdbc and odbc and how is jdbc required in this context.

869

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How can I write to the log used by DriverManager and JDBC drivers?

948

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