Which of the following lines of code represents the correct syntax to use extends keyword?Options1.class Run { .....}class Sun extends Run { ..... .....}2.class Run { .....}class Sun { extends Run .....}3.class Run extends Run { .....}class Sun extends Run { ..... .....}
Question
Which of the following lines of code represents the correct syntax to use extends keyword?Options1.class Run { .....}class Sun extends Run { ..... .....}2.class Run { .....}class Sun { extends Run .....}3.class Run extends Run { .....}class Sun extends Run { ..... .....}
Solution
The correct syntax to use the extends keyword in Java is represented by the first option:
- class Run { .....} class Sun extends Run { ..... .....}
This is because in Java, the extends keyword is used in class declarations to specify that a class is a subclass of another class. The class after the extends keyword is the superclass, and the class before the extends keyword is the subclass. The subclass inherits all the members (fields, methods, and nested classes) from its superclass.
The syntax is as follows:
class Subclass extends Superclass { // fields, methods, and nested classes }
So, in the given options, only the first one follows the correct syntax. The other two options are incorrect.
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