TCS Tech Lounge JAVA Final-17

If the client has disabled cookie in the browser, which session management mechanism could the web container employ?

ANS: Session Management using URL Rewriting

class Super{

            void show(){

                        System.out.println("parent");

            }

}

public class Sub extends Super{

            void show()throws IOException{

                        System.out.println("Child");

            }

            public static void main(String[]args){

                        Super s = new Sub();

                        s.show();

            }

}

ANS: compile error

StringBuffer Objects are mutable objects?

ANS: True

public class Operators1{

            public static void main(String[]args){

                        double x=6;

                        int y=5,z=2;

                        x=y++ + ++x/z;

                        System.out.println(x);

            }

}

ANS: 8.5

Automatically when the view is dropped.

E. The OR REPLACE option is used to change the definition of an existing view without dropping and recreating it.

F. The WITH CHECK OPTION constraint can be used in a view definition to restrict the columns displayed through the view.

Which of the following must be true of the object thrown by a thrown statement?

ANS: It must be assignable to the Throwable type

What will this code print?

Int arr[] = new int[5];

System.out.print(arr);

ANS: Garbage Value

What does read(char[] cbuf, int off, int len) of InputStreamreader do?

ANS: Reads characters into a portion of an array

The default initial values of the data members in Employee class for string name and int id are

ANS: null, 0

Which class handle any type of request so it is protocol-independent?

ANS: GenericServlet

Java is a_ _ __ independent language.

Ans: Platform

 What is the return type of skipByte() func in DataInputStream class?

ANS: int

Aceess modifier can beused for local variables

Ans: false

Which of the following languages is more suited to a structured program?

Ans: Pascal

What is the limit of data to be passed from HTML when doGet() method is used?

ANS: 2k

Switch(x){

Default: System.out.println(“Hello”);

}

Which two are acceptable types of for x?

1.      byte

2.      long

3.      char

4.      float

5.      Short

6.      Long

ANS: 1 and 3

For a 2 tier architecture

1.      Presentation layer in one machine and Business & Resource layer is available in different machine.

2.      Presentation & Business layer in one machine and Resource layer in another machine. Which of the below statements Is true.

ANS: Both statements are true