Select the correct answerAssuming that all the necessary imports are done, what will be the output of the following Java code? class parent { int x; void display() { System.out.println(x); } } class child extends parent { int y; void display() { System.out.println(y); } } class method_overriding { public static void main(String args[]) { child obj = new child(); obj.x=4; obj.y=5; obj.display(); } }Options435Compilation Error
Question
Select the correct answerAssuming that all the necessary imports are done, what will be the output of the following Java code? class parent { int x; void display() { System.out.println(x); } } class child extends parent { int y; void display() { System.out.println(y); } } class method_overriding { public static void main(String args[]) { child obj = new child(); obj.x=4; obj.y=5; obj.display(); } }Options435Compilation Error
Solution
The output of the given Java code will be 5.
Here's the step by step explanation:
- A
childobjectobjis created. - The
xvariable ofobjis set to 4. - The
yvariable ofobjis set to 5. - The
display()method ofobjis called.
Since obj is an instance of the child class, the display() method of the child class is called, not the parent class. This is a case of method overriding in Java, where the child class method overrides the parent class method.
So, the display() method of the child class prints the value of y, which is 5. Hence, the output is 5.
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