TCS Tech Lounge JAVA Final-3

What is the return type of read() method in BufferedReader class?

Ans: Boolean

Generics, enumerations supported by

Ans:  java SE2

Which of the following is not true about modifying rows in a table?

Ans: You can update more than one row at a time.

_ _ _ _ in java identifies and discards the objects that are no longer needed by a program so that their resources can be reclaimed and reused.

ANS: Garbage collection

_ _ _ _ _ is also known as static variable

ANS: Class variables

FileReader is meant for reading streams of characters. For reading streams of raw bytes, use FileInputStream.

Ans: True

Which exception does close() method throw in BufferedReader class?

Ans: IO Exception

What type of exception can readLine() of DataInputStream throws?

Ans: IOException

What is the return type of write() method in BufferedWriter Class?

Ans: void()

In which Package Writer classes are defined?

Ans: java.io

When three or more AND and OR conditions are combined, it is easier to use the SQL keywords:

Ans: Both IN and NOT IN

Emp_Bonus table has the following data.

Employee bonus

A 1000

B 2000

A 500

C 700

B 1250

What is the SQL query to get the employees who received bonus more than $1,000?

Ans:  c select employee, sum(bouns) from emp_bonus group by employee having sum(bonus)>1000;

What does write(int x) of BufferedOutputStream do?

Ans: Writes the specified bytes to output stream