TCS Tech Lounge JAVA Final-10

The type long can be used to store values in the following range:

ANS: -263 to 263-1

In BufferedOutputStream, the method clone is inherited from:

ANS: java.lang.Object

When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n)_ _ _ _

ANS: Referential integrity constraint

Public class Main {

   public static void main(String args[]) {

      try {

         throw 10;

      }

      catch(int ex) {

         System.out.print("Got the  Exception " + ex);

      }

  }

} What would be the output above program?

ANS: Compiler Error

Which of the following loops will execute the body of loop even when condition controlling the loop is initially false?

ANS:  do-while

                                                                                             

What is the Return type of newline() method in BufferedWriter Class?

ANS: void

The given below program will remove the given character from the String ?

Private static String removChar(String str,char c){

If(str==null)

Return null;

Return str.replaceAll)(Character.toStrng(c),””);

}                              

ANS: True

The life cycle of a servlet is managed by

ANS: Servlet Container

What is the numerical range of char?

ANS: 0 to 65535

EMPDET is an external table containing the columns EMPNO and ENAME. Which command would work on relation to the EMPDET table?

ANS: CREATE VIEW empvu AS SELECT 8 FROM empdept;

Which three are valid array declarations?

1.      Int [] myScores[]

2.      Char [] myChars;

3.      Int [6] myScores;

4.      Dog myDogs [];

5.      :Dog myDogs[7];

ANS: 1,2,4

Buffering speeds up IO and it is not the same as writing one character at a time to the network or disk?

ANS: TRUE

Which of the following methods does BufferedInputSrream inherit from java.lang.Object?

All(equals,finilize,getClass)

Which of these data type is returned by every method of OutputStream

ANS: None of the mentioned

Public class example {

Public static void main(String args[]){

Int x = 0;

If(x >0)

X=1;

Switch(x){

Case 1: System.out.println(1);

Case 0: System.out.println(0);

Case 2: System.out.println(2);

Break;

Case 3: System.out.println(3);

Default:System.out.println(4);

Break;

 }

}

}

ANS:  0 2

class Test1{

                                public static void main(String[]args){

                                    int arr[]=new int[5];

                                    arr[1]=10;

                                    arr[3]=20;

                                    for(int i=0;i<5;i++){

                                                System.out.println(arr[i]);

                                    }

                                }

}

ANS: 0100200

Map’s subinerface, SortedMap,maintains its key-value pairs in ascending order or in an order specified by a Comparator

ANS: True

What type of exceptions are thrown by readShort() of DataInputStrea?

ANS: IOException

Select the advantages of layered architecture

All ( Simplicity-ease of design, Flexibility-Ease to modify, Incremental changes –Add new layers functions etc, )

Public class Test1{

Enum eColors{

Black(5),

BLUE(10),

GREEN(15);

Int colorCode=0;

eColors(int colorCode){

this.colorCode=colorCode;

}

};

Public static void main(String args[]){

System.out.println(eColors.values()[1].colorCode);

}

}

What will be the output?

ANS: 10