Do read the disclaimer before proceeding . If you believe that any question here doesn't belong to this category bring it to my attention & I'll rectify it . Comments & suggestions will be highly appreciated . If you'd like to see your question's here mail me .

1. Will the following code compile ? If yes , what is the output & if not what is the compiler error ?

 class Test{

	static String raid(){
		try
		{
			throw new Exception();
		}
		catch (Exception e)
		{
			int i = 1 / 0 ;
			return "Error";
		}
		finally
		{
			return "Peace";
		}
	}

	public static void main(String args[]){
		System.out.println(raid());
	}
};

Options :

1. Compiler error , return "Error" : statement not reached

2. Compiler error ,  i = 1 / 0 : Exception must be caught or declared in the throws clause

3. Compiles & prints Error when run

4. Compiles & prints Peace when run

2. What is the compiler error generated by the following piece of code or what is the output if any ?

 class Test01{

	public static void main(String args[]){
		int i = 1;
		if ( i = 2 )
		{
			System.out.println("In if");
		}
		else System.out.println("In else");
	}
};

Options :

1. Output = In If
2. Compiles but no output is generated
3. Output is = In else
4. Compiler error , if ( i = 2) : can't convert int to boolean

3. Will the code given below compile ? If run with the following command line - java just - what is the output ?

 class Test02{

	public static void main(String args[]){
		String str = args[0];
		switch ( str.equals("just"))
		{
		case 1:
			System.out.println("case 1");
			break;
		case 2:
			System.out.println("case 2");
			break;
		default:
			break;		
		}
	}
};

Options :

1. Output = case 1
2. Output = case 2
3. No output generated
4. Compiler error , switch ( str.equals("just")) : Can't convert boolean to int.
5. Compiler error , case 1 : can't convert boolean to int

4. What is the output of the following code fragment when run with the following command line - java 1 ?

 class Test03{

	public static void main(String args[]){
		int i = Integer.parseInt(args[0]);
		switch (i)
		{
		case 1:
			System.out.println("case 1");
		case 2:
			System.out.println("case 2");
		default:
			System.out.println("default");
			break;		
		}
	}
};

Options :

1. case 1
   case 2
   default
   
2. case 1
   
3. Runtime exception thrown -NumberFormatException , Integer.parseInt ( args[0] ) : Can't convert String to int
   
4. The code won't compile because there is no method parseInt ( ) defined in the Integer class .

5. Predict the output for the following piece of code .

 class Test04{

	public static void main(String args[]){
		for ( int i = 1 ; i <= 5 ; i++ )
		{
			if ( i < 5 )
			{
				continue;
			}
			else System.out.println( i );
		}
	}
};

Options :

1. 1 to 5 are printed on a new line each
2. 1 to 4 are printed on a new line each
3. Only 5 is printed
4. 2 to 5 are printed on a new line each
5. 2 to 4 are printed on a new line each
6. No output is generated because continue terminates the loop

6. Will the following code block compile ? If yes , what is the output ?

 class Test05{

	public static void main(String args[]){
		try
		{
			throw new Exception();
			System.out.println("try");
		}
		catch (Exception e)
		{
			System.out.println("catch");
		}
		finally
		{
			System.out.println("finally");
		}
	}
};

Options :

1. try
   catch
   finally
   
2. catch
   finally
   
3. finally
   
4. Exception must be declared in the throws clause
   
5. Compiler error , System.out.println("try") : statement not reached

7. What is the output for this ?

 class Test06{

	public static void main(String args[]){
		for (int i = 0 ; i < 5 ; i++)
		{
			System.out.println(i);
			break;
		}
	}
};

Options :

1. 0 to 5 , each on a separate line
2. 1 to 5 , each on a new line
3. 1 to 4 each on a new line
4. 0
5. 0 to 4 , each on a new line

8. Will the following code generate a compiler error ? If not , what is the output ?

class Test07{

	public static void main(String args[]){
		for (int i = 0 ; i < 5 ; i++)
		{
			break;
			System.out.println(i);
		}
	}
};

Options :

1. 0 to 5 , each on a separate line
2. 1 to 5 , each on a new line
3. 1 to 4 each on a new line
4. 0
5. Compiler error , System.out.println ( i ) : statement not reached
6. 0 to 4 , each on a new line

9. Choose the most appropriate option for the following piece of code -

 class Test08{

	public static void main(String args[]){
		char c = 'a';
		switch (c)
		{
		case 1:
			System.out.println( "case 1" );
			break;
		case 2:
			System.out.println( "case 2" );
			break;
		case 3:
			System.out.println( "case 3");
			break;
		default:
			System.out.println( "default" );
			break;
		}
	}
};

Options :

1. Compiler error , switch ( c ) : Can't convert char to int
2. Compiler error , switch ( c ) : Can't convert char to boolean
3. Compiles & runs with the output = default
4. Compile & runs with the output = case 2
5. Compiler error , switch ( c ) : can't convert String to boolean

10. Does the following piece of code compile ? If yes , what is the output ?

 class Test09{

	static int tomb( char a){
		throw new NumberFormatException();
	}

	public static void main(String args[]){
		try
		{
			tomb('a');
		}
		catch (Exception e)
		{
			System.out.println("Done");
		}
	}
};

Options:

1. NumberFormatException thrown at runtime
2. Compiler error , throw new NumberFormatException() : Checked Exceptions must be declared in the throws clause or must be caught in the corresponding catch block
3. Compiler error , System.out.println("Done") : statement not reached
4. Output = Done

Answers :

1. d
2. d
3. d
4. a
5. c
6. e
7. d
8. e
9. c
10. d