Newgen Placement Paper-ON 25 August 2024

Newgen Previous Years Solved Sample Placement Papers

Which of the following is true about servlets?
```
    a) Servlets can use the full functionality of the Java class libraries
    b) Servlets execute within the address space of web server, platform independent and uses the functionality of java class libraries
    c) Servlets execute within the address space of web server
    d) Servlets are platform-independent because they are written in java
    
```
Answer: b) Servlets execute within the address space of web server, platform independent and uses the functionality of java class libraries Explanation: Servlets execute within the address space of a web server. Since they are written in Java, they are platform-independent, and the full functionality of Java class libraries is available.
When do exceptions in Java arise in the code sequence?
```
    a) Run Time
    b) Compilation Time
    c) Can Occur Any Time
    d) None of the mentioned
    
```
Answer: a) Run Time Explanation: Exceptions in Java are run-time errors that occur when the program is executing.
Which of these keywords is not a part of exception handling?
```
    a) try
    b) finally
    c) thrown
    d) catch
    
```
Answer: c) thrown Explanation: The five main keywords for exception handling are: try, catch, throws, throw, and finally.
Which of these keywords must be used to monitor for exceptions?
```
    a) try
    b) finally
    c) throw
    d) catch
    
```
Answer: a) try Explanation: The try block is used to monitor for exceptions in Java.
Which of these keywords must be used to handle the exception thrown by try block in some rational manner?
```
    a) try
    b) finally
    c) throw
    d) catch
    
```
Answer: d) catch Explanation: If an exception occurs in the try block, it is handled by the catch block.
Which of these keywords is used to manually throw an exception?
```
    a) try
    b) finally
    c) throw
    d) catch
    
```
Answer: c) throw Explanation: The throw keyword is used to manually throw an exception in Java.

What will be the output of the following Java program?

    class exception_handling 
    {
        public static void main(String args[]) 
        {
            try 
            {
                System.out.print("Hello" + " " + 1 / 0);
            }
            catch(ArithmeticException e) 
            {
                System.out.print("World");
            }
        }
    }

Answer: b) World Explanation: The 1 / 0 causes an ArithmeticException, which is caught by the catch block, printing "World". Output:

    $ javac exception_handling.java
    $ java exception_handling
    World


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Newgen Placement Paper -: Java Questions With Answers