Tag: programming languages

Questions Related to programming languages

Which packages contain the JDBC classes?
technology programming languages

  1. java.jdbc and javax.jdbc

  2. java.jdbc and java.jdbc.sql

  3. java.sql and javax.sql

  4. java.rdb and javax.rdb

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Correct Option: C

Which type of driver provides JDBC access via one or more ODBC drivers?

technology programming languages

  1. Type 1 driver

  2. Type 2 driver

  3. Type 3 driver

  4. Type 4 driver

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Correct Option: A

Which type of driver converts JDBC calls into the network protocol used by the database management system directly?
technology programming languages

  1. Type 1 driver

  2. Type 2 driver

  3. Type 3 driver

  4. Type 4 driver

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Correct Option: D

How can you retrieve information from a ResultSet?

technology programming languages

  1. By invoking the method get (..., String type) on the ResultSet, where type is the database

  2. By invoking the method get (..., Type type) on the ResultSet, where Type is an object

  3. By invoking the method getValue (...), and cast the result to the desired java type.

  4. By invoking the special getter methods on the ResultSet: getString (...), get Boolean (...),

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Correct Option: D

How can you execute DML statements in the database?
technology programming languages

  1. By making use of the InsertStatement, DeleteStatement or UpdateStatement classes

  2. By invoking the execute(...) or executeUpdate(...) method of a normal Statement object

  3. By invoking the executeInsert(...), executeDelete(...) or executeUpdate(...) methods of

  4. By making use of the execute(...) statement of the DataModificationStatement object

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Correct Option: B

How do you know in your Java program that a SQL warning is generated as a result of executing a SQL statement in the database?
technology programming languages

  1. You must catch the checked SQLException which is thrown by the method which executes

  2. You must catch the unchecked SQLWarningException which is thrown by the method

  3. You must invoke the getWarnings() method on the Statement object (or a sub interface

  4. You must query the ResultSet object about possible warnings generated by the database

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Correct Option: C

What is, in terms of JDBC, a DataSource?

technology programming languages

  1. A DataSource is the basic service for managing a set of JDBC drivers

  2. A DataSource is the Java representation of a physical data source

  3. A DataSource is a registry point for JNDI-services

  4. A DataSource is a factory of connections to a physical data source

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Correct Option: D

What is the meaning of ResultSet.TYPE_SCROLL_INSENSITIVE

technology programming languages

  1. This means that the ResultSet is insensitive to scrolling

  2. This means that the Resultset is sensitive to scrolling, but insensitive to updates, i.e. not

  3. This means that the ResultSet is sensitive to scrolling, but insensitive to changes made by others

  4. The meaning depends on the type of data source, and the type and version of the driver you use with this data source

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Correct Option: C

What is the meaning of ResultSet.TYPE_SCROLL_INSENSITIVE
technology programming languages

  1. This means that the ResultSet is insensitive to scrolling

  2. This means that the Resultset is sensitive to scrolling, but insensitive to updates, i.e. not

  3. This means that the ResultSet is sensitive to scrolling, but insensitive to changes made by others

  4. The meaning depends on the type of data source, and the type and version of the driver you use with this data source

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Correct Option: C

Class C { public static void main(String[] args) { int[]a1[]=new int[3][3]; //3 int a2[4]={3,4,5,6}; //4 int a2[5]; //5 }} What is the result of attempting to compile and run the program ?.

technology programming languages

  1. compiletime error at lines 3,4,5

  2. compiltime error at line 4,5

  3. compiletime error at line 3

  4. Runtime Exception

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Correct Option: B