JAVA EXCEPTIONS QUIZ

Predict the output:public class Test{ public static void main(String args[]){ try{ String arr[] = new String[10]; arr = null; arr[0] = "one"; System.out.print(arr[0]); }catch(Exception ex){ System.out.print("exception"); }catch(NullPointerException nex){ System.out.print("null pointer exception"); } }}

"exception" is printed.

Compilation fails saying NullPointerException has already been caught.

None of these

"one" is printed.

"null pointer exception" is printed.

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The class at the top of exception class hierarchy is .................

Throwable

ArithmeticException

Exception

Object

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Which exception is thrown when divide by zero statement executes?

NumberFormatException

ArithmeticException

None of these

NullPointerException

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Which of the following blocks execute compulsorily whether exception is caught or not.

throws

finally

throw

catch

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Determine output of the following program code?public class Test{ public static void main(String args[]){ int i; try{ i = calculate(); System.out.println(i); }catch(Exception e){ System.out.println("Error occured"); } } static int calculate(){ return (7/2); }}

None of these

3

Error occured

3.5

Compilation Error

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Which exception is thrown when an array element is accessed beyond the array size?

ArrayElementOutOfBounds

ArrayIndexOutOfBoundsException

ArrayIndexOutOfBounds

None of these

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Given the code. What is the result when this program is executed?public class Test{ static int x[]; static{ x[0] = 1; } public static void main(String args[]){ }}

ArrayIndexOutOfBoundsException is thrown

StackOverflowException is thrown

ExceptionInInitializerError is thrown

None of these

IllegalStateException is thrown

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try{ File f = new File("a.txt");}catch(Exception e){}catch(IOException io){}Is this code create new file name a.txt ?

true

Compilation Error

false

None of these

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What is the output of the following program code?public class Test{ public static void main(String args[]){ try{ int i; return; } catch(Exception e){ System.out.print("inCatchBlock"); } finally{ System.out.println("inFinallyBlock"); } }}

The program will return without printing anything

inCatchBlock

inCatchBlock inFinallyBlock

inFinallyBlock

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What will be the output?class MyClass{ public String test(){ try{ System.out.print("One"); return ""; } finally{ System.out.print("Two"); } }}public class Test{ public static void main(String args[]){ MyClass m = new MyClass(); m.test(); }}

Compilation Error

None of these

One Two

Two

One

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