Given1. class Program{2. public static void main(String args[]){3. int x = (int)args[0];4. System.out.print(x);5. }6. }What is true?*Compilation fails due to multiple errorsIf we use command line invocation, java Program 10, the output will be 10.If we use command line invocation, java Program abc, An ClassCastException will be thrown.If we use command line invocation, java Ex, a ArrayIndexOutOfBoundsException will be thrown.Compilation fails due to error on line 3.
Question
Given1. class Program{2. public static void main(String args[]){3. int x = (int)args[0];4. System.out.print(x);5. }6. }What is true?*Compilation fails due to multiple errorsIf we use command line invocation, java Program 10, the output will be 10.If we use command line invocation, java Program abc, An ClassCastException will be thrown.If we use command line invocation, java Ex, a ArrayIndexOutOfBoundsException will be thrown.Compilation fails due to error on line 3.
Solution
The correct answer is: Compilation fails due to error on line 3.
Here's why:
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The code tries to cast a String (which is what args[0] is, since it's a command line argument) to an int, which is not allowed in Java. This will cause a compile-time error, hence the compilation fails due to error on line 3.
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If we use command line invocation, java Program 10, the output will not be 10 because the program will not compile due to the error on line 3.
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If we use command line invocation, java Program abc, a ClassCastException will not be thrown
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