TCS Tech Lounge JAVA Final-16

The webserver that executes the servlet creates an _ _ _ _ and passes this to servlets service method(which inturn passes to doget and dopost)

ANS: HttpServlet

public class Sample

{

                                public static void main(String[] args){

                                int[] myArray = new int[3];

                                for(int x:myArray)

                                {

                                    System.out.print(x);

                                }

                                }

}

Ans: 000

Java platform consists of below components.

ANS: Java API, JVM

An InputStreamReader is a bridge from byte streams to ……………………streams.

ANS: Character

What can be appended to Writer class using append() ?

ANS: Character

When you create a FileOutputStream you can decide if you want to overwrite any existing file with the same name, or if you want to append to any existing file.

ANS: True

Reader class is a final class ?

ANS: False

What command is used to compile a Java program eg. Test.java

ANS: javac Test.java

Which method of Writer class is not implemented by subclass ?

ANS: read()

What value does readLine() return upon encountering end-of-file ?

ANS:  null

Can a stream act as a data source for another stream?

ANS:  Yes. Some streams can be connected together.

What is a stream that transforms data in some way called ?

ANS: Processing stream

SELECT * FROM Table1 HAVING Column1 > 10

ANS: The result will be all rows from Table 1 which have Column1 values greater than 10.

Which of the following invokes function in SQL

ANS: Callable statements

The equals method only takes Java objects as an argument , and not primitives, passing primitives will result in a compile time error.

ANS: True

Which of these keywords is not a part of Java exception handling ?

ANS: thrown

A floppy disk contains

ANS: Both circular tracks and sector

public class StringComp{

                       public static void main(String[] args){

                      

                       String s1= "rahul";

                       String s2= "rahul";

                       String s3= new String("459029");

                       String s4= new String("459029");

                       System.out.print(s1.equals(s2));

                       System.out.print((s1==s2));

                       System.out.print(s3.equals(s4));

                       System.out.print((s3==s4));

                      

                      

                       }

}

ANS: true true true false

In BufferedReader what method is used to notify the operating system that a file is no longer needed ?

ANS: close()

In Servlet Terminology what provides rentime environment for JavaEE(j2ee) applications. It performs many operations that are given below: 1. Life Cycle Management 2.Multithreaded support 3. Object Pooling 4.Security etc

ANS: Container

The DTD defines the structure of XML documents

ANS: True

Choose the incorrect one among the following choices:

ANS: List<int> I = new ArrayList<int>();