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Java Methods
Question 1
What is the default return type of a method in Java if none is specified?
void
int
Object
It is compilation error when return type is not present.
Question 2
Which statement about instance methods is correct?
They can only be accessed from static methods.
They require an object to be called.
They are automatically synchronized.
They must be declared final.
Question 3
What happens if we declare a method both static and final?
Compilation error
The method cannot be overridden
The method can be overridden
Runtime error
Question 4
What will happen when calling a static method using an object?
class Demo {
static void show() {
System.out.println("Static Method");
}
public static void main(String[] args) {
Demo obj = new Demo();
obj.show();
}
}
Compilation error
Static Method
NullPointerException
Runtime error
Question 5
Which of the following will cause a compile-time error in method overriding?
Overriding a method and narrowing its access modifier
Overriding a method with the same return type
Overriding a method using @Override annotation
Overriding a method and throwing fewer checked exceptions
Question 6
What is method overloading?
Two methods with the same name and parameters
Two methods with the same name but different parameters
Two methods with the same name but different return types
Defining methods inside a loop
Question 7
What is the correct syntax to call a method named display() from the same class?
display();
class.display();
void display();
call display();
Question 8
What is the use of varargs in Java?
To return multiple values
To accept a variable number of arguments
To call a method multiple times
To pass a list
Question 9
Which method is called when a Java program starts execution?
execute()
main()
run()
start()
There are 9 questions to complete.