What will be the result after compiling this code?
class SuperClass{
public int doIt(String str, Integer... data)throws Exception{
String signature = "(String, Integer[])";
System.out.println(str + " " + signature);
return 1;
}
}
public class Test extends SuperClass{
public int doIt(String str, Integer... data){
String signature = "(String, Integer[])";
System.out.println("Overridden: " + str + " " +signature);
return 0;
}
public static void main(String... args){
SuperClass sb = new Test();
sb.doIt("hello", 3);
}
}
class SuperClass{
public int doIt(String str, Integer... data)throws Exception{
String signature = "(String, Integer[])";
System.out.println(str + " " + signature);
return 1;
}
}
public class Test extends SuperClass{
public int doIt(String str, Integer... data){
String signature = "(String, Integer[])";
System.out.println("Overridden: " + str + " " +signature);
return 0;
}
public static void main(String... args){
SuperClass sb = new Test();
sb.doIt("hello", 3);
}
}A. Overridden: hello (String, Integer[])
B. hello (String, Integer[])
C. Compilation fails
D. None of these
Answer: Option C
Solution(By Examveda Team)
Exception must be caught or declared to be thrown.
This Question Belongs to Java Program >> Inheritence
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Comments ( 3 )
A. The process of acquiring properties and behaviors of one class by another
B. The process of creating objects
C. The process of encapsulation
D. The process of overloading methods
In Java, which keyword is used to implement inheritance between classes?
A. inheritsFrom
B. inherits
C. implements
D. extends
A. The class that inherits properties and behaviors
B. The child class
C. The class that is inherited from
D. The class that is marked as "final"
In Java, can a subclass inherit constructors from its superclass?
A. Only if the subclass is marked as "final"
B. Yes, a subclass inherits constructors from its superclass
C. Only if the superclass is marked as "static"
D. Only if the subclass is marked as "final"
doIt() method of SuperClass throws an Exception but does not catch or declare's the exception.
Rule: If you are calling a method that declares an exception, you must either caught or declare the exception.
There are two cases:
Case1:You caught the exception i.e. handle the exception using try/catch.
Case2:You declare the exception i.e. specifying throws with the method.
What exception is occurring here?
Why here Exception must be caught or declared to be thrown ?