Answer Posted / uv

When Class.forName("<classname>") function gets
executed,the class gets loaded in JVM.

To create an object and access its functions and variables,
we can use getInstance( ), please look into the below
fragment code:

Class c = Class.forName("Cls");
Object o = null;
o = c.getInstance( );
// type casting the Object
Cls cl = (Cls) o;

What is jdbc? Describe the steps needed to execute a sql query using jdbc.

847

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What are jdbc and its components?

920

---

How to rollback a JDBC transaction?

1028

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There is a method getColumnCount in the JDBC API. Is there a similar method to find the number of rows in a result set?

993

---

What is the return type of execute, executequery and executeupdate?

1060

---

What is in terms of jdbc a datasource?

1008

---

Is oracle client required for jdbc connection?

914

---

How many categories of jdbc drivers are there?

849

---

How can I instantiate and load a new CachedRowSet object from a non-JDBC source?

921

---

Briefly tell about the jdbc architecture.

930

---

Does sql allow null values ?

907

---

What is ojdbc?

897

---

What does executeupdate return in jdbc?

918

---

If you are given a choice to implement the code to either insert a record or update if already exist, which approach will you follow ?

934

---

What are the different types of locking in JDBC?

948

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