Which of the following statements are true? Please select all that applyGroup of answer choicesTo override a method, the method must be defined in the subclass using the same signature and compatible return type as in its superclass.Overloading a method is to provide more than one method with the same name but with different signatures to distinguish them.It is a compile error if two methods differ only in return type in the same class.A private method cannot be overridden. If a method defined in a subclass is private in its superclass, the two methods are completely unrelated.A static method cannot be overridden. If a static method defined in the superclass is redefined in a subclass, the method defined in the superclass is hidden.
Question
Which of the following statements are true? Please select all that applyGroup of answer choicesTo override a method, the method must be defined in the subclass using the same signature and compatible return type as in its superclass.Overloading a method is to provide more than one method with the same name but with different signatures to distinguish them.It is a compile error if two methods differ only in return type in the same class.A private method cannot be overridden. If a method defined in a subclass is private in its superclass, the two methods are completely unrelated.A static method cannot be overridden. If a static method defined in the superclass is redefined in a subclass, the method defined in the superclass is hidden.
Solution 1
All of the statements are true:
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To override a method, the method must be defined in the subclass using the same signature and compatible return type as in its superclass. This is true because in Java, method overriding occurs when a subclass provides a specific implementation of a method that is already provided by its superclass. The method in the subclass must have the same name, return type, and parameters as the one in its superclass.
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Overloading a method is to provide more than one method with the same name but with different signatures to distinguish them. This is true because in Java, method overloading is a feature that allows a class to have more than one method having the same name, if their argument lists are different.
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It is a compile error if two methods differ only in return type in the same class. This is true because in Java, two methods with the same name and parameter types but different return types are considered duplicate methods, which is a compile error.
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A private method cannot be overridden. If a method defined in a subclass is private in its superclass, the two methods are completely unrelated. This is true because in Java, a private method is not visible to its subclasses and therefore cannot be overridden.
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A static method cannot be overridden. If a static method defined in the superclass is redefined in a subclass, the method defined in the superclass is hidden. This is true because in Java, static methods belong to the class, not instances of the class. Therefore, static methods cannot be overridden.
Solution 2
All of the statements are true:
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To override a method, the method must be defined in the subclass using the same signature and compatible return type as in its superclass. This is true because in Java, method overriding occurs when a subclass provides a specific implementation of a method that is already provided by its parent class. The method in the subclass must have the same name, return type, and parameters as the one in its parent class.
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Overloading a method is to provide more than one method with the same name but with different signatures to distinguish them. This is true because in Java, method overloading is a feature that allows a class to have more than one method having the same name, if their argument lists are different.
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It is a compile error if two methods differ only in return type in the same class. This is true because in Java, two methods within the same class cannot have the same name and parameter list but different return types.
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A private method cannot be overridden. If a method defined in a subclass is private in its superclass, the two methods are completely unrelated. This is true because in Java, a private method is not visible to its subclasses and therefore cannot be overridden.
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A static method cannot be overridden. If a static method defined in the superclass is redefined in a subclass, the method defined in the superclass is hidden. This is true because in Java, static methods belong to the class, not the instance. Therefore, it is not possible to override static methods in Java.
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