Choose the correct statement. Select all that apply. Group of answer choicesEvery class in Java can have exactly one superclassString is a subclass of ObjectAll classes in Java will have the toString() methodJava supports multiple inheritance via Interfaces
Question
Choose the correct statement. Select all that apply. Group of answer choicesEvery class in Java can have exactly one superclassString is a subclass of ObjectAll classes in Java will have the toString() methodJava supports multiple inheritance via Interfaces
Solution 1
The correct statements are:
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Every class in Java can have exactly one superclass: This is true. In Java, a class can only extend one superclass. This is known as single inheritance.
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String is a subclass of Object: This is true. In Java, all classes are subclasses of the Object class, including the String class.
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All classes in Java will have the toString() method: This is true. The toString() method is a built-in method in the Object class, which is the superclass for all classes in Java. Therefore, all Java classes have the toString() method.
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Java supports multiple inheritance via Interfaces: This is true. While Java does not support multiple inheritance with classes (a class can only extend one superclass), it does support multiple inheritance with interfaces. A class can implement multiple interfaces.
Solution 2
The correct statements are:
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Every class in Java can have exactly one superclass: This is true. In Java, a class can only inherit from one superclass. This is known as single inheritance.
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String is a subclass of Object: This is true. In Java, all classes, including String, are subclasses of the Object class.
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All classes in Java will have the toString() method: This is true. The toString() method is a built-in method in the Object class, which is the superclass for all classes in Java. Therefore, all Java classes have the toString() method.
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Java supports multiple inheritance via Interfaces: This is true. While Java does not support multiple inheritance with classes (a class can only have one superclass), it does support multiple inheritance with interfaces. A class can implement multiple interfaces.
Similar Questions
Select the correct answerAll classes in Java are inherited from which class?Optionsjava.class.inheritedjava.lang.classjava.class.objectjava.lang.Object
Select the correct answerWhich of these class is superclass of every class in Java?OptionsObject classString classAbstract classArrayList class
Select the correct answerUsing which of the following, multiple inheritance in Java can be implemented?OptionsInterfacesMultithreadingProtected methodsPrivate methods
Select the correct answerWhat is inheritance in Java?OptionsThe ability to create multiple instances of a classThe ability to create new classes from existing classesThe ability of a class to inherit fields and methods from its subclassThe ability of a subclass to inherit the fields and methods of its superclass
e correct answerUsing which of the following, multiple inheritance in Java can be implemented?
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