The keyword used for inheritance isextendsas follows. class derived-class extends base-class { //methods and fields } classSuperClassA{publicvoidfoo(){System.out.println("SuperClassA");}}classSubClassBextendsSuperClassA{publicvoidbar(){System.out.println("SubClassB");}}publicclassTest{publicsta...
(a) What is a constructor in java? Explain. (b) Give an example. QUESTION 1. Which of these is not included in a class diagram of an object class? The parent class The class name The methods The attributes QUESTION 2. To create a subclass, which Java keyword do you What is the La...
Java - Abstraction Java - Interfaces Java - Extending Interfaces Java - Method Overriding Java - Method Overloading Java - Super Keyword Java - Multiple Inheritance Exception Handling Tutorials Java - Exception Handling Java - Exception-Handling Advantages Java - Final, Finally and Finalize Data Struc...
log(i); // still 2 // Objects (including functions) are passed by reference var obj = { hero: "Superman" }; function bestSuperhero(obj){ obj.hero = "Batman"; } bestSuperhero(obj); console.log(obj.hero); // = "Batman" The this keyword within methods, always refers to the ...
That is, I explicitly declared the backing variable in the declaration of the superclass. Interestingly, when I was preparing this blog post I compiled the code above as a “Command Line Tool” type of project, not an iOS app. The error was different, dare I say better, more telling of...
Which of these is not included in a class diagram of an object class? The parent class The class name The methods The attributes QUESTION 2. To create a subclass, which Java keyword do you Pick a pair of concrete classes in the JDK in a parent-child relationship and discuss a few ...